Description
Reel of 30 SWG bare copper wire totaling about 1150 feet by mass
Flexible spine model demonstrates vertebral movement
Acrylic bell-in-vacuum jar with an internal 4-6V DC electric bell that fades and falls silent as the enclosed air is removed
38mm lens holder
Resonant Tuning Fork Pair on Pine Boxes with Mass and Mallet, 440Hz cylinder Reel of 30 SWG bareUsed to demonstrate beat frequencies and sympathetic resonance, this pair of 440Hz steel forks sits on pine resonance boxes (7. 5 x 4 x 2. 5 inches) with one fork carrying an adjustable tuning mass.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
