crystals

The Piezoelectric Crystal Ultrasound Uses to See Through Stuff

Physics, piezoelectricity / , , /
piezoelectric-crystals-used-in-ultrasound

There are piezoelectric crystal ultrasound employs to detect matter through matter, probing only with sound. Ultrasound waves, also known as ultrasonic waves, are simply sound waves read by a special type of microphone, usually around 1.8-5 MHz (acoustic frequency). This is 1.8-5 million cycles per second. Just like sound, ultrasound travels through matter and bounces […]

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How to travel faster than the speed of light, the basics

Physics, Wave-mechanics / , , , , , , , , , , , , /
laserarray

This topic first interested me in my college optics class, where we learned that although no wave can travel faster than light, information carried in waves certainly can, because the speed of the phase group can exceed the speed of wave propagation itself. So there are demonstrably “things” that do travel faster than light. In

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