SI Multiples
Steradians only go up to 4π ≈ 12.56637, so the large multiples are not usable for the base unit, but could show up in such things as rate of coverage of solid angle, for example.
| Multiple | Name | Symbol | May be visualized as... |
|---|---|---|---|
| 101 | decasteradian | dasr | Surface area of the Americas plus liquid water on Earth, relative to Earth (cyan on map) |
| 100 | steradian | sr | Area of Oceania plus Asia excluding Russia, relative to Earth (yellow on map) |
| 10−1 | decisteradian | dsr | Area of Algeria plus Libya, relative to Earth (green on map) |
| 10−2 | centisteradian | csr | Area of Zimbabwe, relative to Earth (blue on map) |
| 10−3 | millisteradian | msr | Area of Switzerland, relative to Earth (red on map) |
| 10−6 | microsteradian | µsr | Area of Costa Mesa, California, relative to Earth |
| 10−9 | nanosteradian | nsr | About 8 American football fields, relative to Earth |
| 10−12 | picosteradian | psr | Area of a small apartment, relative to Earth |
| 10−15 | femtosteradian | fsr | Area of a sheet of A5 paper, relative to Earth |
| 10−18 | attosteradian | asr | Area of a quarter-inch square, relative to Earth |
| 10−21 | zeptosteradian | zsr | Cross-sectional area of 32 gauge wire, relative to Earth |
| 10−24 | yoctosteradian | ysr | Surface area of a red blood cell, relative to Earth |
Read more about this topic: Steradian
Famous quotes containing the word multiples:
“If twins are believed to be less intelligent as a class than single-born children, it is not surprising that many times they are also seen as ripe for social and academic problems in school. No one knows the extent to which these kind of attitudes affect the behavior of multiples in school, and virtually nothing is known from a research point of view about social behavior of twins over the age of six or seven, because this hasn’t been studied either.”
—Pamela Patrick Novotny (20th century)