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What is the name of the highly accurate atomic clock created by the National Institute of Standards and Technology (NIST) in Colorado?
- NIST-Alpha Clock
- NIST-F1 Cesium Fountain Clock
- NIST-Time Master
- NIST-Precision Timekeeper
The National Institute of Standards and Technology in Colorado created an atomic clock so accurate they claim will neither gain nor lose a second in 20 million years. It’s called the NIST-F1 Cesium Fountain Clock and gets its accuracy from a fountain-like atomic movement.
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Which rock is used to build modern clocks?
- Quartz
- Diamond
- Ruby
- Beryl
Some watches wind themselves up automatically. One of the most accurate modern clocks is regulated by the vibrations in a quartz crystal.
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How many seconds per day does a pendulum clock lose when moved to an altitude of 4,000 feet or more, due to changes in local gravity?
- 8 seconds
- 12 seconds
- 16 seconds
- 20 seconds
Due to changes in local gravity, a pendulum clock that is accurate at sea level will lose nearly 16 seconds per day if moved to an altitude of 4,000 feet or more.
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