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? ¶
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? ¶