about 100 years
The Hadean Eon, the earliest time interval, was when the Earth was cooling, and continents and oceans formed. Lifeforms are thought to have appeared in the following eon, the Archean Eon.(eras are a much smaller time interval, and the Hadean is not normally subdivided into these)
An interval is the spacing of time. For example: I ran for an interval of 10 minutes then walked for an interval of 30 minutes. Or each car has an interval of 0.5 seconds.
Interval .
Time interval is the period of time between the start and end of an activity.
A second is a measure of a time interval that has no relevance to an area measurement.
An interval is the spacing of time. For example: I ran for an interval of 10 minutes then walked for an interval of 30 minutes. Or each car has an interval of 0.5 seconds.
It is the difference in arrival time between the primary and secondary waves. Primary waves always arrive first because they have a higher velocity. The interval value is used in determining the location of an earthquake.
Generation time has been used synonymously with the term "serial interval." Serial interval is the time from the onset of symptoms in the index case until the onset of symptoms in any secondary cases. For human seasonal influenza, the mean serial interval has been estimated as 3.6 days (95% confidence interval = 2.9-4.3 days) (Cowling BJ et al, Estimation of the Serial Interval of Influenza, Epidemiology 2009; 20(3): 344-7.
they have been on the earth for along time
In terms of the time interval between sucessive sunrises as observed from the moon, it is approximately 29.5 days on earth.
the systolic time interval measurements are longest at LVET.
Position and Time interval. Both A (position) and C (time interval).