1S or 1s may refer to:
*
1s electron
In atomic theory and quantum mechanics, an atomic orbital is a function describing the location and wave-like behavior of an electron in an atom. This function can be used to calculate the probability of finding any electron of an atom in any spe ...
, in an atomic orbital
*
Sabre (computer system)
Sabre Global Distribution System, owned by Sabre Corporation, is a travel reservation system used by travel agents and companies to search, price, book, and ticket travel services provided by airlines, hotels, car rental companies, rail providers ...
's IATA code
* 1S, a series of
Toyota S engines
* SSH 1S (WA); see
Washington State Route 502
State Route 502 (SR 502, officially known as the Battle Ground Highway) is a state highway in the U.S. state of Washington, serving the city of Battle Ground in Clark County. The highway travels due east from an interchange with Int ...
,
Washington State Route 503
See also
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Shilling
The shilling is a historical coin, and the name of a unit of modern currencies formerly used in the United Kingdom, Australia, New Zealand, other British Commonwealth countries and Ireland, where they were generally equivalent to 12 pence o ...
*
Second
The second (symbol: s) is the unit of time in the International System of Units (SI), historically defined as of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds ...
*
Ones (disambiguation)
*
S1 (disambiguation) S1, S01, S.I, S-1, S.1, Š-1 or S 1 may refer to:
Biology and chemistry
* S1 nuclease, an enzyme that digests singled-stranded DNA and RNA
* S1: Keep locked up, a safety phrase in chemistry
* Primary somatosensory cortex, also known as S1
* Tegaf ...
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