The opposite is also true: if you apply a voltage to a piece of quartz, it vibrates at a precise frequency (it shakes an exact number of times each second).Photo: Maybe you have a decorative, violet-colored amethyst crystal like this in your home? It's a type of quartz that gets ...
With sonic toothbrushes, the entire brush head vibrates very quickly—and the manufacturers claim this produces a different type of cleaning action that makes them more effective. According to the marketing spiel, because a sonic toothbrush buzzes over your teeth at much higher speed than a normal...
But you can damage the larger diaphragm or tube (if it has one), by recording a source that's too loud or dropping it. The transducer works by allowing the diaphragm to vibrate closer and further from a charged metal plate, and this plate is why condenser mics need Phantom power or som...
The sound source, say, a loudspeaker vibrates which starts to push the air molecules at its surface and these air molecule guys push the next air molecule guys and so on for as long as they have enough energy left - pushing air molecules around is hard work and they don't get paid ...
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3) If one vibrates so its peaks and troughs coincide with the mid-points of the other, we say they're 90 degrees out of phase.How do interferometers work? An interferometer is a really precise scientific instrument designed to measure things with extraordinary accuracy. The basic idea of ...
A typical record player has a stylus (similar to the needle in Edison's machine) that bumps up and down in the groove of a vinyl (plastic) disc. The stylus is a tiny crystal of sapphire or diamond mounted at the very end of a lightweight metal bar. As the crystal vibrates in the...