Sound

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128Hz Recording Tuning Fork £36.45 Wooden handled tuning fork Metal tip for vibration recordings Sooted glass recording plate included Precise physical recording of sound waves	2000Hz Tuning Fork £47.80 Tuning fork with wooden handle Ideal for demonstration of the Doppler Effect Natural frequency of 2000Hz 220mm length	21Hz Tuning Fork with Plotter Pen £43.10 Tuning fork with plotter pen Counterweight for balanced performance Allows for physical demonstration of sound waves 254mm in length


440Hz Pair of Tuning Forks on Resonance Boxes £98.42 Pair of tuning forks mounted on resonance boxes 440Hz frequency each Soft striking hammer and tuning weights included Clear grained fir wood contruction	440Hz Tuning Fork on Resonance Box £54.20 Tuning fork mounted on resonance box Long-sustaining sound waves Soft striking hammer provided Tuning fork approx. 170mm in length	C-Major Chord Set of Tuning Forks on Resonance Boxes £222.03 Set of four tuning forks Mounted on pine resonance boxes Allows for especially long sustain Supplied with soft striking hammer


Connecting Lead with Two Metal Rods £45.12 Lead and two metal rods For use with microphone box Measures sound pulses in free space 75cm lead length	Cork Powder 10g Bottle £12.72 Fine cork powder (10g) For use with Kundt's Tubes Displays nodes and antinodes To be placed in the tube by means of a chute	Demonstration Monochord £120.25 Demonstrate string tension and sound relationship Wooden construction Supplied with 2 steel and 1 nylon strings Peg and weight string-adjusting mechanics


Demonstration Tuning Fork £41.20 Large tuning fork Displays sound vibrations Can be struck with hammer or onto hard surface 750mm length	Hard Striking Hammer £11.14 Hard-hitting striking hammer Ideal for high frequency tuning forks Wooden handle for easy grip Aluminium beater	Heating Rod K for Kundt's Tube E £73.71 Heats up Kundt's Tube Warms air to around 50 degrees celsius Spacer ring and connector included 90cm length and 11mm diameter

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