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- Innovations: Radio Time Signals
Displaying 1 - 6 of 6
Artifact
Uses sidereal (star time), with a day of 23 hours, 56 minutes, 4.1 seconds long.
Artifact
For use with radio time signals.
Illustration
Navigators used radio time signals to accurately set their second-setting watches. Stations around the world broadcast these time signals hourly.
Illustration
Sidereal time, or “star time,” is based on Earth’s rotation relative to the stars, rather than to the Sun.
Photograph
This station was one of the first to make radio time signals available.
