User:Cutdogg/sandbox

A zeptosecond is 1×10−21 of a second (one sextillionth of a second). For comparison, a zeptosecond is to a second what a second is to about 31.71 trillon years.

A zeptosecond is equal to 1000 yoctoseconds, or $1/1000$ of an attosecond. Because the next higher SI unit for time is the attosecond (10−18 seconds), durations of 10−20 s and 10−19 s will typically be expressed as tens or hundreds of zeptoseconds:

Times which can be expressed in zeptoseconds:
 * 2 zeptoseconds: representative cycle time of gamma ray radiation released in the decay of a radioactive atomic nucleus
 * 4 zeptoseconds: cycle time of the zitterbewegung of an electron
 * 156 zeptoseconds: mean lifetime of a Higgs Boson
 * 247 zeptoseconds: travel time of a photon across "the average bond length of molecular hydrogen"

Category:Orders of magnitude (time)