Second FAQs:


Q: Is a second "the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom"?

A: Yes, Seconds may be measured using a mechanical, electrical or an atomic clock.

Q: Is a second defined as the proper time on the rotating geoid?

A: Yes.

Q: Are seconds an unsigned clock depicting Orpheus in the Fremersdorf collection?

A: Yes, and dated between 1560 and 1570.

Q: Is a second 16 minutes?

A: Yes, and 40 seconds, or the length of a short break.

Q: Is a second multiplied by 60 to form a minute?

A: Yes, and which is multiplied by 60 to form an hour, which is multiplied by 24 to form a day.

Q: Was a second produced by correcting the output of each atomic clock to mean sea level?

A: Yes, and lengthening the second by about 1×10−10.

Q: Is a second also the base unit of time in other systems of measurement: the centimetre–gram–second?

A: Yes, and metre–kilogram–second, metre–tonne–second, and foot–pound–second systems of units.

Q: Was a second redefined in terms of a year for a particular epoch because?

A: Yes, and by then, it had become recognized that the Earth's rotation on its own axis was not sufficiently uniform as a standard of time.

Q: Is a second described briefly in a special publication from the National Institute of Standards and Technology?

A: Yes, and in detail by the National Research Council of Canada.

Q: Is a second 11 days?

A: Yes, and 13 hours, 46 minutes and 40 seconds, which is roughly of the order of a week.

Q: Is a second 31?

A: Yes.