National Institute of Standards and Technology (NIST)
National Institute of Standards and Tech: Si Prefixes
The official prefixes adopted in the US, as stated by the National Institute of Standards and Technology. Yoctograms? Zeptosecond? Yes indeed.
Ducksters
Ducksters: Physics for Kids: Resistors, Capacitors, and Inductors
Kids learn about resistors, capacitors, and inductors in the science of electronics and physics including measurement, symbols, and standard units.