no one knows it
yes
2/11
The standard unit of length is the meter, and any multiple and submultiple such as kilometer and millimeter. Nonstandard units include foot, inch, mile, light-year, parsec, astronomical unit.
You can invent any number of nonstandard units, but none of them is "best". It is best to use standard units, that is, the meter.
The international unit is the kilogram.
Because other people may have no idea how big the non-standard unit is. If I said than my monitor was six fingers tall, how big is that? It is, of course, better to use an international standard unit such as the centimetre or metre, but some countries are still stuck with inches.
The boy was a nonstandard student.
If you refer to the unit, the international unit for energy is the joule; the symbol is "J".
we were using the nonstandard set of measurements
It was used to measure the strength of a laser. In the 1960s, razor blades were pretty much similar in shape and a Gillette was a non-standard unit for measuring the strength of a laser beam. The measurement comprised the number of laser blades that a laser device could burn through.
It really depends on the system of units used. In the international system (SI), it is a base unit.
SI stands for Systems International. The unit for matter is kilograms. This unit can be used to describe the largest amount of matter to the smallest amount.