{"title":"Tuning Forks","description":"\u003cp\u003eTuning forks for physics classrooms, resonance experiments, and sound frequency demonstrations in NZ laboratories.\u003c\/p\u003e\n\u003cp\u003eExplore adjustable tuning forks, resonance box models, and multi-frequency sets designed for teaching pitch, vibration, beat frequency, and wave behaviour investigations.\u003cbr\u003e\u003c\/p\u003e","products":[{"product_id":"tuning-fork-blued-steel-e-320hz","title":"Tuning Fork, Blued Steel, E, 320Hz","description":"","brand":"Delta Education","offers":[{"title":"Default Title","offer_id":51044742103271,"sku":"46TFBSE","price":6.75,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/3922\/0711\/files\/46TFBSfamily_767bc235-0de6-4189-8a86-4afc65ea098e.jpg?v=1749459239"},{"product_id":"tuning-fork-blued-steel-f-341-3hz","title":"Tuning Fork, Blued Steel, F, 341.3Hz","description":"","brand":"Delta Education","offers":[{"title":"Default Title","offer_id":51044742168807,"sku":"46TFBSF","price":6.75,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/3922\/0711\/files\/46TFBSfamily_85277d75-adb4-476f-a70d-15317688c78d.jpg?v=1749459244"},{"product_id":"tuning-forks-chrome-set-of-13-256-512hz","title":"Tuning Forks Chrome – Set of 13 (256–512 Hz)","description":"\u003cp\u003eChrome-plated steel tuning fork set of 13 frequencies from 256 Hz to 512 Hz for comprehensive sound demonstrations.\u003c\/p\u003e\n\u003cp\u003eThis complete classroom tuning fork set supports structured investigations into pitch, frequency relationships, harmonics, and resonance. Supplied in a protective deep blue felt wrap, the forks are clearly organised for easy classroom use and storage. Ideal for secondary physics, NCEA sound units, and music-science integration, this set allows students to compare frequencies, explore octave relationships, and conduct resonance and wave experiments with consistent, reliable tones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSet of 13 chrome-plated steel tuning forks\u003c\/li\u003e\n\u003cli\u003eFrequency range from 256 Hz to 512 Hz\u003c\/li\u003e\n\u003cli\u003eClear, sustained tones for accurate demonstrations\u003c\/li\u003e\n\u003cli\u003eSupplied in protective deep blue felt wrap\u003c\/li\u003e\n\u003cli\u003eSuitable for physics, acoustics, and wave investigations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequencies included:\u003c\/strong\u003e C 512 Hz, B 480 Hz, A1 455 Hz, A 426.6 Hz, G1 405 Hz, G 384 Hz, F1 362 Hz, F 341.3 Hz, E 320 Hz, D1 302 Hz, C1 271 Hz, D 288 Hz, C 256 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Chrome-plated steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 13 tuning forks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Deep blue felt wrap\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Delta Education","offers":[{"title":"Default Title","offer_id":51044742299879,"sku":"46TFC13","price":62.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/3922\/0711\/files\/46TFC13.jpg?v=1771378410"},{"product_id":"tuning-fork-resonance-box-sympathetic-a426","title":"Tuning Fork Resonance Box – Sympathetic Beat Demonstration A426","description":"\u003cp\u003eTuning fork resonance box set for sympathetic vibration and beat frequency demonstrations at A426.\u003c\/p\u003e\n\u003cp\u003eThis acoustics teaching apparatus allows students to clearly observe resonance, sympathetic vibration, and beat frequency effects in real time. Both forks are tuned to A (426 Hz), with one fork featuring a sliding mass to slightly alter its frequency for controlled beat production. When sounded together, the forks produce a distinct audible beat, making this set ideal for secondary physics classrooms, NCEA sound investigations, and wave interference demonstrations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo A426 tuning forks for resonance and beat experiments\u003c\/li\u003e\n\u003cli\u003eOne fork fitted with adjustable sliding mass\u003c\/li\u003e\n\u003cli\u003eThreaded shanks securely screw into resonance box tops\u003c\/li\u003e\n\u003cli\u003eClear demonstration of sympathetic vibration over distance\u003c\/li\u003e\n\u003cli\u003eSupplied complete with hammer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e A (426 Hz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustment:\u003c\/strong\u003e Sliding mass for frequency variation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBox size:\u003c\/strong\u003e Approx. 180 x 88 x 53 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Threaded shank connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e 2 forks, 2 resonance boxes, 1 hammer\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Delta Education","offers":[{"title":"Default Title","offer_id":51044742594791,"sku":"46TFRB","price":48.4,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/3922\/0711\/files\/46TFRB.jpg?v=1771378065"},{"product_id":"tuning-forks-resonance-boxes-superior-model-set-of-2","title":"Tuning Forks with Resonance Boxes – Superior Model, Set of 2 (256 Hz Adjustable)","description":"\u003cp\u003eSuperior tuning fork set with resonance boxes for advanced resonance and beat frequency demonstrations.\u003c\/p\u003e\n\u003cp\u003eThis premium classroom acoustics apparatus features two extra heavy aluminium tuning forks mounted on individual resonance boxes, producing a longer audible vibration than standard forks. Designed for secondary physics and senior science investigations, the set allows students to observe resonance, sympathetic vibration, and beat frequency phenomena in a clear and measurable way. One fork is fixed at 256 Hz while the second includes an adjustable sliding weight, enabling controlled frequency variation for beat experiments and resonance alignment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSuperior model with extra heavy aluminium forks for extended vibration duration\u003c\/li\u003e\n\u003cli\u003eTwo forks mounted on individual resonance boxes\u003c\/li\u003e\n\u003cli\u003eFixed fork at 256 Hz for stable reference frequency\u003c\/li\u003e\n\u003cli\u003eAdjustable fork with sliding weight for ±30 Hz variation\u003c\/li\u003e\n\u003cli\u003eIdeal for demonstrating resonance, sympathetic vibration and beat frequencies\u003c\/li\u003e\n\u003cli\u003eIncludes adjustable weight and hammer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed frequency:\u003c\/strong\u003e 256 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable range:\u003c\/strong\u003e Approximately 30 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFork lengths:\u003c\/strong\u003e Approx. 19.4 cm and 17.5 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminium forks with resonance boxes\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Delta Education","offers":[{"title":"Default Title","offer_id":51044799643879,"sku":"46TFRB2","price":98.9,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/3922\/0711\/files\/46TFRB2.jpg?v=1771376926"},{"product_id":"tuning-fork-set-major-chords","title":"Tuning Fork Set – Major Chords C256, E320, G384, C512 (Set of 4)","description":"\u003cp\u003eMajor chord tuning fork set with precision frequencies C256, E320, G384 and C512 for sound and resonance demonstrations.\u003c\/p\u003e\n\u003cp\u003eThis set of four precision aluminium alloy tuning forks allows students to hear and explore harmonic relationships, chord structure, and frequency ratios in a clear and engaging way. Ideal for physics sound units, music science integration, and classroom demonstrations of wave interference and resonance, the forks can be struck individually or together to produce a full C major chord. Each fork is clearly stamped with its frequency and note, making identification simple during practical investigations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSet of four tuning forks forming a C major chord\u003c\/li\u003e\n\u003cli\u003ePrecision aluminium alloy construction for consistent tone\u003c\/li\u003e\n\u003cli\u003eFrequencies and notes stamped on each fork\u003c\/li\u003e\n\u003cli\u003eClear, sustained sound ideal for classroom demonstrations\u003c\/li\u003e\n\u003cli\u003eSuitable for physics, acoustics, and music science learning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequencies included:\u003c\/strong\u003e C-256 Hz, E-320 Hz, G-384 Hz, C-512 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminium alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Set of 4 tuning forks\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Delta Education","offers":[{"title":"Default Title","offer_id":51044932583655,"sku":"46TFMC","price":48.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/3922\/0711\/files\/46TFMC.jpg?v=1749469062"},{"product_id":"tuning-fork-activator","title":"Activator for Tuning Forks","description":"\u003cp\u003eThe Tuning Fork Activator is used as a surface to gently strike the fork to activate vibrations and prevent fork damage when striking harder surfaces. This rubber activator is tapered so the bottom is wider for stability. Made of solid rubber (colour may vary).\u003c\/p\u003e","brand":"Delta Education","offers":[{"title":"Default Title","offer_id":51044932616423,"sku":"46ACTF","price":19.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/3922\/0711\/files\/46ACTF.jpg?v=1749469070"},{"product_id":"resonance-appartatus","title":"Resonance Apparatus","description":"\u003cp\u003eInvestigate the length, frequency and velocity of sound waves by studying the resonance of air columns. In the experiment, described below, you will use the wave equation (v = λf) to measure the speed (v) of sound; here (f) is the frequency and (λ) is the wavelength. A vibrating tuning fork, held over the top of the graduated water cylinder, will begin to resonate with the air column above the water in the cylinder. After taking the measurements of the air column and the tuning fork, the speed of sound can be calculated.\u003c\/p\u003e","brand":"Delta Education","offers":[{"title":"Default Title","offer_id":51044932681959,"sku":"46RA","price":89.8,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/3922\/0711\/files\/46RA.jpg?v=1749469083"},{"product_id":"adjustable-tuning-fork-variable-frequency-c128-b240","title":"Adjustable Tuning Fork – Variable Frequency C128–B240","description":"\u003cp\u003eAdjustable tuning fork with sliding weights for variable frequency sound demonstrations from C128 to B240.\u003c\/p\u003e\n\u003cp\u003eThis versatile acoustics teaching tool allows students to explore pitch, vibration, resonance, and wave frequency in a hands-on way. By sliding the adjustable weights along each prong, teachers can demonstrate how changing mass affects frequency and tone. Ideal for secondary physics classrooms, NCEA sound investigations, and general wave demonstrations, it provides clear, audible tones across a practical musical range for engaging and repeatable experiments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSliding weights allow frequency adjustment along each prong\u003c\/li\u003e\n\u003cli\u003eProduces multiple tones from a single tuning fork\u003c\/li\u003e\n\u003cli\u003eIdeal for demonstrating pitch, vibration, and resonance\u003c\/li\u003e\n\u003cli\u003eSuitable for physics and general science classrooms\u003c\/li\u003e\n\u003cli\u003eDurable metal construction for long classroom life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency range:\u003c\/strong\u003e C-128, D-144, E-160, F-170.7, G-192, A-213.3, B-240 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Adjustable tuning fork with sliding masses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Delta Education","offers":[{"title":"Default Title","offer_id":51044955062503,"sku":"46TFA","price":42.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/3922\/0711\/files\/46TFA-1.jpg?v=1749469217"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/3922\/0711\/collections\/46TFC13_93f5bf02-5798-4cfd-99e8-fc0e46ded36a.jpg?v=1771381557","url":"https:\/\/deltaed.co.nz\/collections\/tuning-forks.oembed","provider":"Delta Educational Supplies Limited","version":"1.0","type":"link"}