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Questions and Answers
What was TDT eventually shortened to?
What was TDT eventually shortened to?
- Mean Solar Time (MST)
- Terrestrial Time (TT) (correct)
- Universal Time (UT)
- Sidereal Time (ST)
Which city uses sidereal time according to the text?
Which city uses sidereal time according to the text?
- Rome
- New York (correct)
- Moscow
- London
For what years was the exact difference change in T = TD - UT deduced only from observations?
For what years was the exact difference change in T = TD - UT deduced only from observations?
- Years later than 1988
- Years earlier than 1955
- Years earlier than 1988 (correct)
- Years later than 1955
What value was used to correct the values earlier than 1955?
What value was used to correct the values earlier than 1955?
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What is sidereal time based on?
What is sidereal time based on?
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What is the hour angle of an object that crossed the meridian 3 hours ago?
What is the hour angle of an object that crossed the meridian 3 hours ago?
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What is the convention for time by the stars based on?
What is the convention for time by the stars based on?
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What is the approximate length of a tropical year mentioned in the text?
What is the approximate length of a tropical year mentioned in the text?
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Who introduced the calendar reform that added a leap year every 4 years?
Who introduced the calendar reform that added a leap year every 4 years?
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What did Pope Gregory XIII's calendar reform in 1582 aim to correct?
What did Pope Gregory XIII's calendar reform in 1582 aim to correct?
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