Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 5, 2025
When, however, this balance of induction is upset by bringing a piece of metal say, a coin near one or other of the coils S S1, a sound will be heard in the telephone. The induction balance has been used as a "Sonometer" for measuring the sense of hearing, and also for telling base coins.
Word Of The Day
Others Looking