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Laser Microphones: The Soviet Spy Technology that’s Making a Comeback
What is a Laser Microphone? Laser microphones are any device that uses a laser or optical beam to recover audio information, largely these devices use mechanical disturbance of the laser’s beam ...
Telescopes from Invention to Today
Telescopes serve as a gateway to discovery. They capture the imagination of children and professionals alike. The development of telescopes has led to countless discoveries, both terrestrial and ...