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ID-nummer
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2024.010.001
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Titel
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Stopwatch
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Publik beskrivning
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When William Phillips was eleven, his parents gave him this stopwatch. He wanted it in order to perform simple experiments, such as measuring the time it took for pendulums and swings to oscillate, and objects to fall to the ground. He also used the stopwatch to time runners.
As a physicist, Phillips later developed methods for cooling atoms with laser beams. This method made it possible to create even more precise atomic clocks. Their uncertainty is one second per 300 million years.
William Phillips donated the stopwatch to the Nobel Prize Museum in 2024.
