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The scientific term for the rate of the string’s vibration is its frequency. You measure frequency in hertz (Hz), a unit that just means “vibrations per second.” The standard tuning pitch, 440 Hz, is the pitch you hear when an object (like a tuning fork or guitar string) vibrates to and fro 440 times per second.
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The good news: Astronomers know they can combine new cutting-edge instruments to track small, distant asteroids years in advance. Teams including NASA's Center for Near-Earth Object Studies rely on those calculations to monitor space rocks and comets that could someday pose a real threat to Earth.
AI is allowing cyber criminals to far more easily make deepfake videos