The observation, measurement, and analysis of very small time intervals or time-related phenomena using specialized instruments.
From Greek chronos (time) and -scopy (observation/viewing). A scientific term parallel to microscopy and spectroscopy, developed as precision timekeeping became increasingly important.
Chronoscopy is how we discovered that light travels at a fixed speed and how we measure radioactive decay—it's the science of seeing what happens in the blink of an eye and slowing it down to understand it!
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