State the law for writing S.I units.
Answers
The units named after scientists are not written with a capital initial letter. ...
The symbols of the units named after scientist should be written by a capital letter. ...
Small letters are used as symbols for units not derived from a proper name.
pls hit a like and a vote....
thank you
Values are written as a number followed by a space (representing a multiplication sign) and a unit symbol, e.g. 2.4 kg or J. This convention also applies to the per cent sign (%). Exceptions are the symbols for plane angular degrees, minutes and seconds (°, ′ and ″), which are placed immediately after the number with no intervening space.
- Symbols for derived units formed by multiplication are joined with a centre dot (·) or a (non-break) space, for example, "N·m" or "N m".
- Symbols for derived units formed by division are joined with a solidus (/), or given as a negative exponent. For example, "metre per second" can be written "m/s", "m s-1" or as "m· s-1". Only one solidus should be used; e.g., "kg/(m·s2)" but "kg/m/s2" is ambiguous and should not be used.
- Symbols are mathematical entities, not abbreviations, so do not have an appended period/full stop, i.e. “.”.
- Symbols are written in upright (Roman) type (e.g. m for metres), so as to differentiate from the italic type generally used for quantities (e.g. m for mass). The consensus of international standards bodies is that this rule should be applied irrespective of the font used for any surrounding text.
- Symbols for units are written in lower case (e.g., "m", "s", "mol"), except for symbols derived from the name of a person. For example, the unit of pressure is named after Blaise Pascal, and is written "Pa", even though the unit itself is written "pascal" (see below). The one exception is the litre, whose original symbol "l" is too similar to the numeral "1" or the uppercase letter "i" (for some typefaces), in some English-speaking countries. The American National Institute of Standards and Technology recommends that "L" is used instead, see NIST (2008). This usage is common in USA, Canada and Australia (but not elsewhere).
- A prefix is part of the unit, and its symbol is prepended to the unit symbol without a separator (e.g. "G" in "GHz"). Compound prefixes are not allowed. All symbols of prefixes larger than 103 (kilo) are uppercase
mark as branlist answer