256HZ Tuning Fork Set -- By plugging a tuning fork into a sound box socket and striking it with a rubber mallet or other elastic object, it can send out sound waves at a frequency of 256 cycles per second
INSTRUMENTS ACOUSTIQUES DE BASE - La physique du diapason est également un instrument acoustique de base pour démontrer la génération sonore
MEASURING & VERIFYING FUNCTION -- The interference of sound can measure the speed of sound and verify the conduction of sound waves