IB Physics Glossary
Browse the glossary using this index
Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
is the SI unit of electrical current and is defined through the magnetic force acting between two parallel wires. If the magnetic force between two wires separated by 1m, each of length 1m, carrying equal currents, equals 2 x 10-7 N, then the current in each wire equals 1 Ampere.
the energy from a star per second incident on 1m2 of the Earth's surface.(d)
a measure of the brightness of a star as it appears from Earth. (d).
is the average distance between Earth and Sun. (s)
is the drop in intensity as X-rays pass through a medium.
is a record of the variation of hearing with frequency for a patient.
is the number of atoms in 12g of Carbon-12 (6.02x1023). (d)