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ELECTRET MICROPHONE
In 1962, James West and Gerhard Sessler patented a small, low-cost microphone; their design is now inside 90% of the 2 billion microphones made each year- In 1962, James West and Gerhard Sessler patented a small, low-cost microphone; their design is estimated to be used in 90% of microphones made today
- Best Offers On Top Podcast Microphones Under 3000 in India
- Now, charge your e-reader with a simple tap!Researchers have developed new flexible paper generators that use simple rubbing or tapping to produce electricity that can light up LEDs a...13 Oct, 2013, 08.06 PM IST
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