Here are some of the words used for units of time.
Chronon
One-billionth of a trillionth of a second (the time a photon would take to cross the width of one elecctron at the speed of light)
Femtosecond
0.000000000000001 of a second
Picosecond
0.000000000001 (ont-trillionth ) of a second
Nanosecond
0.000000001 (one-billionth) of a second
Microsecond
0.000001 (one-millionth) of a second)
Millisecond
0.001 (one-thousandth) of a second; the blink of an eye takes 50-80 milliseconds
Centisecond
0.01 (one-hundredth) of a second
Second
1/60 of a minute
Minute
60 seconds
Hour
60 minutes
Day
Sunrise to sunrise, or sunset to sunset, or midnight to midnight ; 24
hours
Week
Seven days; In shakespeare’s time, it was also called a sennight, or seven nights
Fortnight
Two weeks (from the Old English for 14 nighs)
Month
Full moon to full moon; 1/12 of a year; 4 weeks, or 28,29,30 or 31 days, depending on month
Bimester
Two months
Trimester
A period of three months
Semester
Six months
Year
365 ¼ days, 52 weeks, or 12 months
Solar day
The time it takes for a place on the Earth directly facing the Sun to make one revolution and return to the same position (about 23 hours 56 minutes)
Solar year
The time it takes for the Earth to make a complete revolution around the sun, equal to 365.24219 solar days or 365 days, 5 hours 48 minutes, 45.51 seconds; also called a tropical year or astronomical year
Leap year
366 days
Decade
10years; also called a decennium
Century
100 years
Millennium
1,000 years; also called a chiliad
Bimillennium
2,000 years
Era
A period of time mesured from some important event
Aeon or eon
A long period of time, usually thousands of years; in geology and
astronomy it is one billion years
Epoch
A geological era or very long period of time
Comments
Post a Comment