Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Install
Faster access than browser!
 

Clock and Ephemeris time

Shortcuts: Differences, Similarities, Jaccard Similarity Coefficient, References.

Difference between Clock and Ephemeris time

Clock vs. Ephemeris time

A clock is an instrument to measure, keep, and indicate time. The term ephemeris time (often abbreviated ET) can in principle refer to time in connection with any astronomical ephemeris.

Similarities between Clock and Ephemeris time

Clock and Ephemeris time have 5 things in common (in Unionpedia): Atomic clock, Caesium, Day, Metrology, Second.

Atomic clock

An atomic clock is a clock device that uses an electron transition frequency in the microwave, optical, or ultraviolet region of the electromagnetic spectrum of atoms as a frequency standard for its timekeeping element.

Atomic clock and Clock · Atomic clock and Ephemeris time · See more »

Caesium

Caesium (British spelling and IUPAC spelling) or cesium (American spelling) is a chemical element with symbol Cs and atomic number 55.

Caesium and Clock · Caesium and Ephemeris time · See more »

Day

A day, a unit of time, is approximately the period of time during which the Earth completes one rotation with respect to the Sun (solar day).

Clock and Day · Day and Ephemeris time · See more »

Metrology

Metrology is the science of measurement.

Clock and Metrology · Ephemeris time and Metrology · See more »

Second

The second is the SI base unit of time, commonly understood and historically defined as 1/86,400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each.

Clock and Second · Ephemeris time and Second · See more »

The list above answers the following questions

Clock and Ephemeris time Comparison

Clock has 376 relations, while Ephemeris time has 39. As they have in common 5, the Jaccard index is 1.20% = 5 / (376 + 39).

References

This article shows the relationship between Clock and Ephemeris time. To access each article from which the information was extracted, please visit:

Hey! We are on Facebook now! »