A standard electret microphone can detect sub-audio "sounds" when some simple equalization circuitry is added.

In early May 2025, air traffic controllers at Newark lost radar contact and radio communication with aircraft for several ...

Colorado Governor Polis has signed a new lease with Union Pacific to bring ski traffic to the railroad.

Trains are complex engineering marvels on a massive scale. America has a rich history of train transit starting in the 1800s ...

DB Corp Ltd., incorporated in the year 1995, is a company (having a market cap of Rs 4,342.72 Crore) operating in Media & Entertainment sector. DB Corp Ltd. key Products/Revenue Segments include ...