{"title":"Sound-\u0026-Resonance","description":"","products":[{"product_id":"ph0745c","title":"Acrylic Hammer for Tuning Fork","description":"Made of Acrylic\u003cbr\u003e\u003cbr\u003eAcrylic Hammer for Tuning Fork","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6544806212,"sku":"PH0745C","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0745C.jpg?v=1571438668"},{"product_id":"ph0177","title":"Bell in Vacuum Experiment Apparatus","description":"\u003cul\u003e\n\u003cli\u003eIngenious apparatus utilizes an audible buzzer in a vacuum to demonstrate how sound waves require a medium through which to travel\u003c\/li\u003e\n\u003cli\u003eProvide your students with a sensory experience by which they can observe the properties and dependencies of mechanical waves\u003c\/li\u003e\n\u003cli\u003eDesigned by staff physicists and bench tested to ensure accurate and repeatable results\u003c\/li\u003e\n\u003cli\u003eSet includes (1) acrylic bell jar, rubber stopper fitted with lead plugs, and electric buzzer\u003c\/li\u003e\n\u003cli\u003eA vacuum plate, vacuum pump, and 3-6V DC power source are required but not supplied\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe Bell in Vacuum Experiment is a classic physics demonstration that uses an audible buzzer in a vacuum to show how sound waves require a medium through which to travel. This experiment is a great way for students to learn about the properties and dependencies of mechanical waves. The set includes an acrylic bell jar, a rubber stopper fitted with lead plugs, and an electric buzzer. As air is removed from the closed system inside the bell jar, the sound of the buzzer becomes proportionately fainter. To conduct the experiment, a vacuum plate, vacuum pump, and 3-6V DC power source are required but not supplied. Size of bell jar: 10\"H x 5.7\" dia.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6545892740,"sku":"PH0177","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/rziji3u9u1p6w81q3w9i.jpg?v=1672859780"},{"product_id":"ph0737c","title":"Eisco Labs Economy Aluminum Tuning Fork for Physics, 320Hz (+\/- 5%)","description":"\u003cul\u003e\n\u003cli\u003eAluminum Tuning Fork\u003c\/li\u003e\n\u003cli\u003e+\/- 5%\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eEconomy Tuning Fork for Physics\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003ci\u003e(1) Tuning Fork, 320Hz\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003eEconomy tuning fork to be used in science experiments. Tuning may be +\/- 5% of stated frequency.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6548547524,"sku":"PH0737C","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/ymgjfisevdeqnf5dxpok.jpg?v=1571438712"},{"product_id":"ph0736b","title":"Steel Tuning Fork, 288Hz Frequency (±5%) - Designed for Physics Experimentation - Chrome Plated Steel - Eisco Labs","description":"\u003cul\u003e\n\u003cli\u003eEconomy Chrome Plated Steel Tuning Forks\u003c\/li\u003e\n\u003cli\u003e+\/- 5%\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eEconomy Tuning Forks for Physics\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003ci\u003e(1) Tuning Fork\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003eEconomy tuning fork to be used in science experiments. 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Size: 5.25\"L x 0.6\"W x 0.25\"H\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6548572804,"sku":"PH0736D","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/e6qkaigd4dv8pu2muzez.jpg?v=1672770254"},{"product_id":"ph0736e","title":"Steel Tuning Fork, 384Hz Frequency (±5%) - Designed for Physics Experimentation - Chrome Plated Steel - Eisco Labs","description":"\u003cul\u003e\n\u003cli\u003eEconomy Chrome Plated Steel Tuning Forks\u003c\/li\u003e\n\u003cli\u003e+\/- 5%\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eEconomy Tuning Forks for Physics\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003ci\u003e(1) Tuning Fork\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003eEconomy tuning fork to be used in science experiments. Tuning may be +\/- 5% of stated frequency.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6548573380,"sku":"PH0736E","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/dcn0cizhehdjlzj3mfmn.jpg?v=1571438712"},{"product_id":"ph0736g","title":"Steel Tuning Fork, 480Hz Frequency (±5%) - Designed for Physics Experimentation - Chrome Plated Steel - Eisco Labs","description":"\u003cul\u003e\n\u003cli\u003eEconomy Chrome Plated Steel Tuning Forks\u003c\/li\u003e\n\u003cli\u003e+\/- 5%\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eEconomy Tuning Forks for Physics\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003ci\u003e(1) Tuning Fork\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003eEconomy tuning fork to be used in science experiments. Tuning may be +\/- 5% of stated frequency.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6548574084,"sku":"PH0736G","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/ogwizi3bmgfklejysqip.jpg?v=1571438712"},{"product_id":"ph0736h","title":"Steel Tuning Fork, 512Hz Frequency (±5%) - Designed for Physics Experimentation - Chrome Plated Steel - Eisco Labs","description":"\u003cul\u003e\n\u003cli\u003eEconomy Chrome Plated Steel Tuning Forks\u003c\/li\u003e\n\u003cli\u003e+\/- 5%\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eEconomy Tuning Forks for Physics\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003ci\u003e(1) Tuning Fork\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003eEconomy tuning fork to be used in science experiments. Tuning may be +\/- 5% of stated frequency.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6548578628,"sku":"PH0736H","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/yb9hysmozag0p47hudgz.jpg?v=1571438712"},{"product_id":"ph0738b","title":"Eisco Labs Aluminum Scientific Tuning Forks, Set of 8 (Scientific Pitch, C4 = 256Hz) with Wooden Case - Designed for Physics Experiments","description":"\u003cul\u003e\n\u003cli\u003eAluminum shank tuning forks\u003c\/li\u003e\n\u003cli\u003eSupplied in a wooden case with foam inserts for advanced protection\u003c\/li\u003e\n\u003cli\u003eIn the key of C 256 through 512\u003c\/li\u003e\n\u003cli\u003eTuned to scientific pitch, C4 = 256Hz (designed for binary use)\u003c\/li\u003e\n\u003cli\u003ePerfect for physics experiments\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eThese aluminum tuning forks are designed for physics experiments and are tuned to scientific pitch, C4=256Hz\u003c\/p\u003e \u003cp\u003e\u003c\/p\u003e \u003cp\u003eThe following frequencies are included:\u003c\/p\u003e \u003cp\u003eC 256Hz - 7 1\/8\"\u003c\/p\u003e \u003cp\u003eD 288Hz - 6 3\/4\"\u003c\/p\u003e \u003cp\u003eE 320Hz - 6 5\/8\"\u003c\/p\u003e \u003cp\u003eF 341.3Hz - 6 1\/2\"\u003c\/p\u003e \u003cp\u003eG 384Hz - 6 3\/16\"\u003c\/p\u003e \u003cp\u003eA 425.6Hz - 5 15\/16\"\u003c\/p\u003e \u003cp\u003eB 480Hz - 5 11\/16\"\u003c\/p\u003e \u003cp\u003eC 512Hz - 5 9\/16\"\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6548615300,"sku":"PH0738B","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0738B.jpg?v=1571438712"},{"product_id":"ph0753for","title":"Force Oscillation and Resonance Demonstration Kit - Explore the Physics of Vibrations, Force, Energy Transfer, Motion and More - Eisco Labs","description":"\u003cul\u003e\n\u003cli\u003eForce Oscillation and Resonance Demonstration kit, complete with weights and springs\u003c\/li\u003e\n\u003cli\u003eExplore the Physics of Vibrations, Force, Energy Transfer, Motion and More\u003c\/li\u003e\n\u003cli\u003eSpeed control adjustable, 6V motor\u003c\/li\u003e\n\u003cli\u003eShows vibration of an object when repeated impulses are applied\u003c\/li\u003e\n\u003cli\u003eIncludes instructional guide and experiment examples\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eThe Forced Oscillation and Resonance Apparatus is a very clever device for demonstrating the principles of resonate vibrations. These vibrations, which can do tremendous damage, quite often remain invisible or unnoticed until their destructive nature becomes apparent. This principle, however, can also be put to very constructive use such as radio and television tuners, musical instruments, super accurate watches, and thousands of other everyday items. Understanding the nature of resonance has also helped to combat its sometimes destructive behavior by building shock and damping systems of buildings during earthquakes. The knowledge has been used to construct noise-canceling systems for car mufflers and industrial plants. It also has been incorporated in stabilizers for automotive engines so that they run smoother.\u003c\/p\u003e\u003cp\u003eKit designed to show the vibration of an object when repeated impulses are applied, this demonstrator consists of two weights of different natural frequencies, two cams driven by a 6V motor with speed control, and four springs. The speed control is used to adjust the frequency of applied force for resonance, so a greater degree of variance is possible.\u003c\/p\u003e\u003cp\u003eIncluded in kit: Force Oscillation and Resonance Apparatus, 2 small springs (0.4\") with looped ends, 2 medium springs (1\") with looped ends, one large spring (2.5\"), large weight (1.5\"), smaller weight (1.25\"), and instructional guide.\u003c\/p\u003e\u003cp\u003eApparatus measures 18\" tall, 6.5\" wide and 4\" long. Base measures 10\" wide and 7\" long.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6550680580,"sku":"PH0753FOR","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/r0ifu8xul14dhxqsw8tk.jpg?v=1780341264"},{"product_id":"ph0746cnc","title":"Eisco Labs High Quality Electric Tuning Fork - Wave experiments","description":"\u003cul\u003e\n\u003cli\u003eAn electromagnet drives the fork to a sustained frequency of approx. 80Hz.\u003c\/li\u003e\n\u003cli\u003eOne prong of the tuning fork has a captive knurled thumbscrew for performing Melde?s experiment.\u003c\/li\u003e\n\u003cli\u003eUniversal binding posts are finished to provide electrical power from an external source of 2 to 6 volts DC.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis electric tuning fork is used to show the relationships between frequency, length, tension and mass or learn about Melde's standing wave experiments with this heavy duty electric tuning fork. An electromagnet drives the fork to a sustained frequency of approx. 80Hz. One prong of the tuning fork has a captive knurled thumbscrew for performing Melde's experiment. Amplitude of the tuning fork vibrations is varied by means of a threaded adjustment screw. Universal binding posts are finished to provide electrical power from an external source of 2 to 6 volts DC.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6551305284,"sku":"PH0746CNC","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/jefpaue8nzg6e2xd3ynt.jpg?v=1780341235"},{"product_id":"ph0722","title":"KundtŸ??s tube - Unmounted","description":"Comprising a glass tube80 cm long and 32 mm in dia. at one end is a tightly fitting but adjustable cork piston fitted to a metal rod 100 cm long and at the other end, a loose fitting piston attached to a rod, 100 cm in length and 8 mm dia. \u003cbr\u003e\n\u003cbr\u003e\nFor showing the wavelength of vibrations in air in a closed tube, bydepositing lycopodium powder at the nodes. Comprising a glass tubeapproximately 80 cm in length and 32 mm in dia. at one end is a tightly fitting but adjustable cork piston fitted to a metal rod 100 cm long and at the other end, a loose fitting piston attached to a rod, 100 cm in length and 8 mm dia. Overall length fully closed, 1.89 m approx.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6551556356,"sku":"PH0722","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0722.jpg?v=1571438791"},{"product_id":"ph0755","title":"Loud Speaker","description":"\u003cul\u003e\u003c\/ul\u003e\u003cp\u003e4 ohm moving coil speaker, mounted in frame with two 4 mm sockets. \n \n4 ohm moving coil speaker, mounted in frame for vertical or horizontal position, with two 4 mm sockets.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6551703300,"sku":"PH0755","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/ebkjs3msz7vdvvnjpm3x.jpg?v=1780341277"},{"product_id":"ph0755a","title":"Loudspeaker - Small","description":"\u003cul\u003e\u003c\/ul\u003e\u003cp\u003eA miniature loudspeaker fully enclosed in a blue plastic enclosure. Size 100 x 75 x 40 mm \n \nA miniature loudspeaker fully enclosed in a blue plastic enclosure Suitable for connection to a tone generator for demonstration of the production of sound waves from electrical signals. Size 100 x 75 x 40 mm\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6551708996,"sku":"PH0755A","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/cl7zjome3zwxi14oq3la.jpg?v=1780341277"},{"product_id":"ph0757","title":"Loudspeaker Large double - Wooden","description":"\u003cul\u003e\u003c\/ul\u003e\u003cp\u003eConsists a 5 W and 8 W speakers mounted in a same wooden box with independent connections and co-axial connecting leads to 4 mm plugs. Size 28 x 10 x 20 cm \n \nThis loudspeaker is ideal for electronic experiments and to study sound and acoustics. It consists a 5 W and 8 W speakers mounted in a same wooden box with independent connections and co-axial connecting leads to 4 mm plugs. Size 28 x 10 x 20 cm\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6551709956,"sku":"PH0757","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/qovsoaupfcootl3chaed.jpg?v=1780341277"},{"product_id":"ph1298","title":"Low Frequency Generator","description":"\u003cul\u003e\u003c\/ul\u003e\u003cp\u003eA very versatile and portable unit which can be battery operated as well as powered from an external source, this function generator is an excellent unit for many applications such as a bridge of LEDs , input to wave generators etc. The unit is housed in a plastic case of size 200 x 125 x 60 mm. Operates on 220VAC\u003cbr\u003e\u003cbr\u003eFrequency Range 0-2 kHz\u003cbr\u003e Waveforms: Sinusoidal, Square, Triangular\u003cbr\u003eTTL Level of output: 0 to 8 Volts peak to peak\u003cbr\u003eOutputs via safety sockets\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6551717444,"sku":"PH1298","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/hijm7chclsapcvapntjx.jpg?v=1657031286"},{"product_id":"ph0750","title":"Eisco Labs Melde's Vibrating String Apparatus","description":"\u003cul\u003e\n\u003cli\u003eMelde's Vibrating String Apparatus is great for demonstrating wave phenomena\u003c\/li\u003e\n\u003cli\u003eAdjustable tension to create standing waves of different wavelength\u003c\/li\u003e\n\u003cli\u003eSimple to use, tension adjustable via placement of masses in a hanging tray\u003c\/li\u003e\n\u003cli\u003eLearn the physics behind string instruments.\u003c\/li\u003e\n\u003cli\u003eThe frequency of the apparatus will depend upon the input frequency of the input supply. This apparatus needs voltage up to 6V AC as input. It will work on both 50Hz as well as 60Hz depending on input\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eEisco Labs Melde's Vibrating String Apparatus\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e Melde's Vibrating String experiment is an elegant way to introduce students to the concept of standing waves. The apparatus consists of a string and an oscillator to generate different frequencies. Melde's experiment is ideal to study the behavior of standing waves. Students can even visually determine wavelength, period and amplitude of waves.\u003cbr\u003e\u003cbr\u003eA string undergoing transverse vibration illustrates many features common to all vibrating acoustic systems just like the vibrations of a violin or guitar string. To adjust the tension of the string, various amounts of mass can be placed in the tray that hangs off the side of a table or lab bench with the use of the included pulley. In this experiment the change in frequency produced when the tension is increased in the string is similar to the change in pitch when a guitar string is tuned.\u003cbr\u003e The frequency of the apparatus will depend upon the input frequency of the input supply. This apparatus needs voltage up to 6V AC as input. It will work on both 50Hz as well as 60Hz depending on input.\u003cbr\u003e\u003cbr\u003eRequires 6 V, 50 Hz power source, supplied to Melde's apparatus via 4mm plug leads.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6551972996,"sku":"PH0750","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/mq2mu7j4hcgu1zjtikc2.jpg?v=1780341236"},{"product_id":"ph1297c","title":"Microphone Audio Amplifier","description":"\u003cul\u003e\u003c\/ul\u003e\u003cp\u003eThis is a simple and wonderful experiment, one can view the spectrum of the CRO. Unit is operated on external + 9V DC supply. \n \nThis is a simple and wonderful experiment, one can view the spectrum of the CRO. The microphone is connected to the input and the amplified output is available on the speaker and the amplified spectrum can be viewed on the CRO. The demo unit is operated on external + 9V DC supply.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6552018948,"sku":"PH1297C","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/jw4k6igxcsgdlnpy4vke.jpg?v=1780341279"},{"product_id":"ph0759","title":"Organ Pipe, 34.5 Inch - Adjustable\/No Set Pitch - Polished Wood - Eisco Labs","description":"\u003cul\u003e\n\u003cli\u003eADJUSTABLE || Organ pipe with no permanent set pitch is adjustable through an entire octave (C5 (C above middle C) to C6)\u003c\/li\u003e\n\u003cli\u003eMULTIFUNCTIONAL || Useful in a variety of settings including a science sound laboratory, a physics or music classroom and in an orchestral setting for concert tuning - Or fun instrumental exploration!\u003c\/li\u003e\n\u003cli\u003eFREQUENCY || Capable of producing frequencies in a range from 521 Hz to 1024 Hz (all audible frequencies) \u003c\/li\u003e\n\u003cli\u003eDURABLE \u0026amp; STURDY || Made of high quality polished wood that is built to last and withstand multiple uses\u003c\/li\u003e\n\u003cli\u003eLARGE, EXTENDS || Pipe extends to 34.5\" in length \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOrgan pipe with no permanent set pitch is adjustable through an entire octave (C5 (C above middle C) to C6). Useful in a variety of settings including a science sound laboratory, a physics or music classroom and in an orchestral setting for concert tuning. Or fun instrumental exploration! Capable of producing frequencies in a range from 521 Hz to 1024 Hz (all audible frequencies).\u003cbr\u003e\u003cbr\u003eMade of high quality polished wood that is built to last and withstand multiple uses. Pipe extends to 34.5\" in length.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6553385604,"sku":"PH0759","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0759_1.jpg?v=1571438831"},{"product_id":"ph0742a","title":"Eisco Labs Pair of Steel Tuning Forks (440Hz) in Wood Bases, One Adjustable","description":"\u003cul\u003e\n\u003cli\u003eUsed to hear dissonance\u003c\/li\u003e\n\u003cli\u003eOne fork adjustable\u003c\/li\u003e\n\u003cli\u003eComes with mallet and bases\u003c\/li\u003e\n\u003cli\u003eNote: These are designed for physics experiments to create beats and are often not exactly 440Hz (usually 436-444Hz). They can be adjusted to create beats within each other or to match each other.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003ePair of Steel Tuning Forks (440Hz) in Wood Bases, One Adjustable\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003ci\u003e(2) Tuning forks with bases, (1) Mallet\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003eFor demonstrating the production of beat frequencies. Comprises two nickel plated forks A (440 Hz +-5%) mounted on individual boxes. One fork is provided with adjustable mass by means of which frequency may be shifted from the nominal 440 Hz .When both forks are sounded a clearly audible 'beat' is produced, its rate depending upon the difference in frequency between the forks.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6553439300,"sku":"PH0742A","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/bsqry09dwnka0xbf5gj5.jpg?v=1780341235"},{"product_id":"ph0742ah","title":"Resonant Tuning Forks Mounted on Pine Boxes, Set\/2 - 440 Hz","description":" \u003cul\u003e\n\u003cli\u003ePair of steel tuning forks, frequency A (440 Hz)\u003c\/li\u003e\n\u003cli\u003eOne fork with adjustable mass for altering its frequency\u003c\/li\u003e\n\u003cli\u003eIncludes mallet and 2 pine box bases\u003c\/li\u003e\n\u003cli\u003eUsed in clearly demonstrating 'beat' frequencies\u003c\/li\u003e\n\u003cli\u003eDemonstrates resonance and interference\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis premium set of \"A\" 440Hz steel tuning forks mounted on pine boxes is perfect for physics experiments demonstrating soundwave resonance and dissonance. It comes with a mass adjustment for one fork that will alter frequency, thus allowing for the creation and observation of beat frequencies or to demonstrate sympathy or resonance. Includes two tuning forks (6\"L x 0.8\"W x 0.5\"D), two mounting boxes (7.5\"L x 4\"W x 2.5H); and one mallet.\u003c\/p\u003e ","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6553440452,"sku":"PH0742AH","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/iauy3smu6bbpbtwxh7th.jpg?v=1659124221"},{"product_id":"ph0720","title":"Eisco Labs Resonance Apparatus approx. 43\" Tall with Metal Stand","description":"\u003cul\u003e\n\u003cli\u003eRESONANCE APPARATUS || Eisco's Resonance Apparatus allows students to investigate the relationship between frequency and wavelength of a pure tone by attempting to measure the speed of sound.\u003c\/li\u003e\n\u003cli\u003ePRODUCT DIMENSIONS || The acrylic tube measures approximately 40.75\" tall and 1\" in diameter. The metal base measures 10\" x 11\" with clampable edges. Black coated threaded rod measures approximately 41.75\" and includes 2 ring clamps with 1.25\" and 3\" inside diameters.\u003c\/li\u003e\n\u003cli\u003eTUNING FORKS || Tuning forks are not included with this apparatus but are required to compete the experiment.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis Resonance Apparatus allows students to determine the speed of sound. Acrylic tube measures approx. 40.75\" tall long and a 1\" diameter. Tube is graduated. Metal Base measures 10\" x 11\" with clampable edges. Black coated threaded rod measures approx. 41\" 3\/4 Comes with 2 ring clamps 1.25\" and 3\" inside diameters. Metal Vessel measures 3 \" diameter which's connects to Rubber tubing measuring 39.50 inches long with a 5\/16 inside diameter to connect to the acrylic tube. Tuning forks are not included\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6554693572,"sku":"PH0720","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/dbed868ddedc4a721dc2daebda7ee32820e20922.jpg?v=1780341235"},{"product_id":"ph0718b","title":"Resonance Apparatus - Brass Tubes","description":"\u003cul\u003e\u003c\/ul\u003e\u003cp\u003eComprising two brass tubes telescoping into each other . \n \nComprising two brass tubes telescoping into each other so that the column of air within the tube may be altered from 30 cm to 53 cm, outer tube fits into a base.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6554694852,"sku":"PH0718B","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/vkz20wqzzcwwmhv2pbml.jpg?v=1780341278"},{"product_id":"ph0745b","title":"Hammer For Tuning Forks - Disc Shaped Rubber Mounted","description":"\u003cul\u003e\n\u003cli\u003eDisc Shaped\u003c\/li\u003e\n\u003cli\u003eRubber Mounted\u003c\/li\u003e\n\u003cli\u003ePolished wooden handle\u003c\/li\u003e\n\u003cli\u003eGreat for the classroom\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe disc shaped rubber tuning fork hammer from Eisco Labs comes on a comfortable, polished wooden handle and is great for student use.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6554969604,"sku":"PH0745B","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/wtw7dexpy3uwkdtm6eun.jpg?v=1780341235"},{"product_id":"ph0715","title":"Eisco Labs Simple Resonance Tube Set with Tuning fork","description":"\u003cul\u003e\n\u003cli\u003eThis simple apparatus clearly demonstrates the principles of resonance without requiring a water column or other apparatus.\u003c\/li\u003e\n\u003cli\u003eUsing the included 512 Hz tuning fork as a sound source, the inner tube slides inside the outer one and the student finds the point of loudest sound.\u003c\/li\u003e\n\u003cli\u003eThe tubes adjust from 25 to 38 cm which will tune over a range of approx. 452 Hz to 585 Hz at room temperature.\u003c\/li\u003e\n\u003cli\u003eIncludes 50 mm plug to close end.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555277764,"sku":"PH0715","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/sk0nqxdd5cnrk4iwxe0t.jpg?v=1571438863"},{"product_id":"ph0728","title":"Sonometer","description":"\u003cul\u003e\u003c\/ul\u003e\u003cp\u003eComprising a wooden resonance box with two rules 1 meter long. Brass and steel wire of different diameter attached to fixed bridge and tensioned by fine adjustment pegs, two moveable bridges, pulley and fixed screw to enable a third wire to be fixed for tensioning by masses. Comprising a wooden resonance box of 114 cm length, 12.5 cm width and 10 cm height, with two rules 1 meter long sub-divided into millimeters. One each brass and steel wire of different diameter attached to fixed bridge and tensioned by fine adjustment pegs, two moveable bridges, pulley and fixed screw to enable a third wire to be fixed for tensioning by masses. One each additional wire of steel and brass, each 1.5 m long and of 22 SWG.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555400516,"sku":"PH0728","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/msvseweoujsekrzmuden.jpg?v=1780341277"},{"product_id":"ph0726","title":"Sonometer - Simple Pattern","description":"Comprising a wooden baseboard 98 x 9 cm mounted on four feet. At one end of the base are two 50N. spring balances with hooks, and at the other end are two corresponding wrest pins. Complete with accessories\u003cbr\u003e\u003cbr\u003eComprising a wooden baseboard 98 x 9 cm mounted on four feet. At one end of the base are two 50N. spring balances with hooks, and at the other end are two corresponding wrest pins. Also provided are three bridges, one large to span both wires and two small for the individual wires. Supplied with two steel wires of 30 SWG one meter long.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555405828,"sku":"PH0726","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0726.jpg?v=1571438865"},{"product_id":"ph0730","title":"47\" Sonometer 3-Wire Pattern - Mersenne's law","description":"\u003cul\u003e\n\u003cli\u003eA hollow wooden sounding box 1290 x 130 x 110 mm (length x width x height) provided with scales divided in mm between fixed bridges over which the wires are stretched.\u003c\/li\u003e\n\u003cli\u003eComplete with three movable bridges, wrist-pin key and a set of four wires, length 1.5 m of 20, 22, 24, 26 SWG\u003c\/li\u003e\n\u003cli\u003eThe distance between the fixed bridges is 720 mm\u003c\/li\u003e\n\u003cli\u003e47\" x 4.75\" 5.25\" ( L x W x H )\u003c\/li\u003e\n\u003cli\u003eWeights are not included.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eA hollow wooden sounding box 1290 x 130 x 110 mm (length x width x height) provided with scales divided in mm between fixed bridges over which the wires are stretched. To one wire a spring balance reading to 100N x 5N is fitted and the tension exerted and measured can be finely adjusted by wing-nut. Another wire passes over a pulley and can be loaded as desired. A third wire is provided for comparison, its tension may be adjusted by means of a wristpin The wires supplied are of steel which is rustles. The distance between the fixed bridges is 720 mm Complete with three movable bridges, wrist-pin key and a set of four wires, length 1.5 m of 20, 22, 24, 26 SWG WITHOUT weight.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555408900,"sku":"PH0730","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/blt7btwjxfuo7fkrajnw.jpg?v=1780341236"},{"product_id":"ph0725","title":"Sonometer Mini","description":"Comprises a hollow resonance box with 60 cm scale printed on one side and with three adjustable strings, two strings by means of wrest pin while third one at the centre with loads or a spring balance. \u003cbr\u003e\n\u003cbr\u003e\nFor investigating pitch of vibrating strings as a function of their tension, length and thickness. Comprises a hollow resonance box with three adjustable strings, two strings by means of wrest pin while third one at the centre with loads or a spring balance. A 60 cm scale printed on one side between two fixed bridges has multi-coloured segments for easy reading, with each smallest block of 1cm provided with two movable bridges to facilitate changing effective string length.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555410308,"sku":"PH0725","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0725.jpg?v=1571438865"},{"product_id":"ph0731","title":"Sonometer Pickup","description":"\u003cul\u003e\u003c\/ul\u003e\u003cp\u003eContains a single electric guitar string, magnetic pickup with 4mm connections. It is a low profile unit, just 25mm high so that it can fit under a sonometer wire. Constructed in clear acrylic measuring 80 x 35 x 25mm. \n \nSuitable for use with any steel wire system such as a sonometer. The pickup is low-profile and with a typical output. A versatile single electromagnetic pick-up can display the oscillations of a wire on an oscillioscope screen. This provides an alternative to tuning fork resonance when investigating frequency \/ length or frequency \/ tension relationships etc.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555411140,"sku":"PH0731","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/nn5nt6gqbhgaefzail6m.jpg?v=1780341277"},{"product_id":"ph0729","title":"Sonometer small","description":"Constructed on a wood base with hardwood sides measuring 650 x 100 mm with integral pulley string and half meter scale. A standard steel quitar string is supplied complete with two movable bridges.\u003cbr\u003e\u003cbr\u003eInstead of a one-off demonstration use the mini-sonometer to give your students hands-on experience of sound  production. The apparatus is constructed on a wood base with hardwood sides measuring 650 x 100 mm overall. It has an integral pulley string is supplied and half meter scale. A standard steel quitar string is supplied complete with two movable bridges. The wire can be loaded with standard slotted weights up to 1 kg to observe the change in pitch etc. The sonometer pickup can be used with this instrument.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555412100,"sku":"PH0729","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0729.jpg?v=1571438865"},{"product_id":"ph0730a","title":"Replacement Wires for Sonometer (PH0730), 60\" each - Pack of 6 - Steel and Brass, 22, 24, 26 Gauge Wires - Eisco Labs","description":"\u003cul\u003e\n\u003cli\u003eFor use with PH0730 Sonometer\u003c\/li\u003e\n\u003cli\u003eSpare or replacement wires\u003c\/li\u003e\n\u003cli\u003ePack of 6\u003c\/li\u003e\n\u003cli\u003eEach wire measures 60\" in length\u003c\/li\u003e\n\u003cli\u003eSteel and brass\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e6 pack wires for use with PH0730 Sonometer. Can be used as spare or replacement parts. Each wire measures 60\" long. Set includes (1) Steel, 22 gauge, (1) Steel, 24 gauge, (1) Steel, 26 gauge, (1) Brass, 22 gauge, (1) Brass, 24 gauge, (1) Brass, 26 gauge\u003c\/p\u003e\u003cp\u003eCup measures 3.75\" tall, and is 2.75\" in diameter.\u003c\/p\u003e\u003cp\u003eLooped ends, ready for use.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555418244,"sku":"PH0730A","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/e0ovfavess0wobbgagag.jpg?v=1780341236"},{"product_id":"ph0753a","title":"Stainless Steel Micro Plus Stethoscope, wth Spare Ear Tips and Diaphragm","description":"\u003cul\u003e\n\u003cli\u003eHigh quality stainless steel stethoscope\u003c\/li\u003e\n\u003cli\u003eComfortable ear tips with alternate sized extra pair\u003c\/li\u003e\n\u003cli\u003eReplacement diagphragm included\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003eThis is a high grade, stainless steel stethoscope for adults.  Comes with spare ear tips and diaphragm.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555694724,"sku":"PH0753A","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0753A_8b6afde4-270a-46d4-adbe-129dcfc14dd3.jpg?v=1571438868"},{"product_id":"ph0738alt","title":"Scientific Steel Tuning Forks, Set of 8","description":"\u003cul\u003e\n\u003cli\u003eSteel tuning forks\u003c\/li\u003e\n\u003cli\u003eMay be +\/- 5% of stated frequency\u003c\/li\u003e\n\u003cli\u003eTuned to scientific pitch\u003c\/li\u003e\n\u003cli\u003eGreat for physics experiments\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThese steel tuning forks are designed for physics experiments and are tuned to scientific pitch. Includes 8 tuning forks.\u003cbr\u003eFrequencies included: C (256), D (288), E (320), F (341), G (384), A (426), B (480), C (512)\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555782596,"sku":"PH0738ALT","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/m5v0wnboi6aevh4t5nxz.jpg?v=1585309593"},{"product_id":"ph0738a","title":"Eisco Labs Scientific Steel Tuning Forks, Set of 8 (Scientific Pitch, C4 = 256Hz) with Wooden Case - Designed for Physics Experiments","description":"\u003cul\u003e\n\u003cli\u003eCOMPLETE SET || Includes 8 scientific steel tuning forks, perfect for a variety of physics experiments, diapason, general tuning fork set.\u003c\/li\u003e\n\u003cli\u003eSCIENTIFIC PITCH || C4 = 256Hz tuning fork included, ideal for accurate sound wave demonstrations.\u003c\/li\u003e\n\u003cli\u003eWOODEN CASE || Comes with a durable wooden case for safe storage and easy transport.\u003c\/li\u003e\n\u003cli\u003eEDUCATIONAL TOOL || Great for teaching sound waves, resonance, and pitch in physics and music classes.\u003c\/li\u003e\n\u003cli\u003eVERSATILE USAGE || Perfect for physics experiments, music education, and interdisciplinary science projects or sound therapy\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe Eisco Labs Scientific Steel Tuning Forks Set is a comprehensive collection of 8 high-quality tuning forks designed for a variety of scientific and educational applications. Each fork is precision-crafted to provide accurate scientific pitch, with the C4 fork tuned to 256Hz. Ideal for demonstrating sound wave properties, resonance, and pitch, this set is perfect for both classroom experiments and interactive learning in physics and music education. The set comes in a durable wooden case, ensuring safe storage and easy transport, making it a versatile and essential tool for educators and students alike.\n\nDisclaimer: This product is not intended to treat or diagnose any diseases and is not intended for medical use.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6555786180,"sku":"PH0738A","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/dprtcobpdklvuxttodzf.jpg?v=1780341236"},{"product_id":"ph0752a","title":"Eisco Labs Stroboscope with 12 0.19in clear slots","description":"\u003cul\u003e\n\u003cli\u003e9.5 inch diameter rotating disc on handle\u003c\/li\u003e\n\u003cli\u003eTotal height: 18 inches\u003c\/li\u003e\n\u003cli\u003eSturdy plastic disc with slots\u003c\/li\u003e\n\u003cli\u003eDisc includes finger hold\u003c\/li\u003e\n\u003cli\u003eHandle with rubber grip\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe sturdy stroboscope with marked disc, finger hold in disc, and rubber gripped handle is easy to use and ideal for studying periodic motion and speed of rotation.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6556063684,"sku":"PH0752A","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/wtjsqg8w0fiac0fdxi6f.jpg?v=1780341235"},{"product_id":"ph0748","title":"Tuning Fork - Electrically Maintained","description":"Mounted on sturdy streamlined base. Steel forks Prong is 10 x 25 x 300 mm\u003cbr\u003e\u003cbr\u003eOn sturdy streamlined base with provision for horizontal or vertical use. Forks are manufactured from selected steel. Prong is 10 x 25 x 300 mm accurate frequency adjustment, chrome plated, vibrations rate 60 per seconds. Electromagnet can work on 6 Volts. The amplitude of vibration can vary by sliding the electromagnet inside prongs. Complete with styled, mirror and counterpoise.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6556995012,"sku":"PH0748","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0748.jpg?v=1571438907"},{"product_id":"ph0745","title":"Tuning Fork - Standing","description":"Light weight tuning fork, capable of standing upright.\u003cbr\u003e\n\u003cbr\u003e\nLight weight tuning forks, capable of standing upright, with specially wide sound irradiating surface, useful for exciting oscillations for the Kundt’s tube.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6556995332,"sku":"PH0745","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0745.jpg?v=1571438907"},{"product_id":"ph0746","title":"Tuning Fork Electric","description":"\u003cp\u003eHeavy-duty electric tuning fork. An electromagnet drives the fork to a sustained frequency of 80Hz. The tuning fork assembly and binding posts are mounted on a stable cast-metal base. \u003c\/p\u003e\n \n\u003cp\u003eTo show relationships between frequency, length, tension and mass or learn about Melde's standing wave experiments with this heavy duty electric tuning fork. An electromagnet drives the fork to a sustained frequency of approx. 80Hz. One prong of the tuning fork has a captive knurled thumbscrew for performing Melde's experiment. Amplitude of the tuning fork vibrations is varied by means of a threaded adjustment screw. Universal binding posts are finished to provide electrical power from an external source of 2 to 6 volts DC.\u003c\/p\u003e\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/nvaE_1dzelE?si=Q093oQG4Z3ZAP0Nn\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6556997636,"sku":"PH0746","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/files\/vqs5fjin3c2sepyhrquk.jpg?v=1754056087"},{"product_id":"ph0740a","title":"Tuning Fork on Resonance Box - Steel","description":"Comprises fourSteel forks mounted on a common box and having frequency of C (256), E (320), G (384), C (512). Complete with hammer.\u003cbr\u003e\n\u003cbr\u003e\nFor demonstrating the formation of basic major cord. Comprises fourSteel forks mounted on a common box and having frequency of C (256), E (320), G (384), C (512). Complete with hammer.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6557000964,"sku":"PH0740A","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0740A.jpg?v=1571438907"},{"product_id":"ph0744a","title":"Steel Tuning Fork Set - Set of 13 - In Wooden Case, Designed for Physics experimentation - Eisco Labs","description":"\u003cul\u003e\n\u003cli\u003eSet of 13 Tuning Forks in frequencies between C (512) and C (236)\u003c\/li\u003e\n\u003cli\u003eMade of nickel-plated steel\u003c\/li\u003e\n\u003cli\u003e(+ \/ -) 5% of stated frequency\u003c\/li\u003e\n\u003cli\u003eDesigned for physics experimentation and studies on sound\u003c\/li\u003e\n\u003cli\u003eIncludes wood carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSet of 13 tuning forks designed to be used in science experiments. Made from the best quality nickel-plated steel, with plain shanks and frequency stamped on each. Frequencies in Hz: C (512), B (480), A (426-6), A (405), G (384), F (362), F (341-3), E (320), E (302), D (288), C (271), C (256), C (236). The set comes in a handsome wood carrying case with latches.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6557005060,"sku":"PH0744A","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/z3pehcq38vwpniiucz1i.jpg?v=1656442082"},{"product_id":"ph0744b","title":"Eisco Labs 13 Piece Aluminum Tuning Fork Set in Wooden Case","description":"\u003cul\u003e\n\u003cli\u003e13 tuning forks each with different frequency\u003c\/li\u003e\n\u003cli\u003eUse for activities involving sound wave physics\u003c\/li\u003e\n\u003cli\u003eIncludes padded wooden storage case\u003c\/li\u003e\n\u003cli\u003eFrequency and musical note engraved in each fork\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eContains 13 plain shank tuning forks with frequencies marked from C(236) to C(512). Essential for studying sound wave physics. Contains: G# 406 F1 362 B 480 F 341.3 E 320 C1 271 D 288 D# 304.4 C 256 A 426.6 A# 456 G 384 C 512\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6557005700,"sku":"PH0744B","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/ox98dwtxwx4bsqxwwkfb.jpg?v=1571438907"},{"product_id":"ph0737i","title":"Tuning Forks, Frequency 256Hz - Aluminum with Round Stem - Eisco Labs","description":"\u003cul\u003e\u003c\/ul\u003e\u003cp\u003ePlain shanks with round Stem, Superior quality aluminium. Same as above but with round Stem, Superior quality Frequency 256Hz\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":6557006148,"sku":"PH0737I","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4949\/products\/PH0737L_5fa86dce-3db7-4195-b228-9bbb99bdae9f.jpg?v=1571438907"},{"product_id":"ph0737j","title":"Tuning Forks, Frequency 2886Hz - Aluminum with Round Stem - Eisco Labs","description":"\u003cul\u003e\u003c\/ul\u003e\u003cp\u003ePlain shanks with round Stem, Superior quality aluminium. 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