The distance between two successive similar points.
Symbol lambda λ

Back

Giga (G)

Front

x 10 to the power of 9

Back

Kilo (K)

Front

x 10 to the power of 3

Back

Equivalent Dose

Front

The amount of biological harm that a radiation will cause symbol H and measured in Sieverts (Sv)

Back

Frequency (f)

Front

Amount of waves produced per second
measured in hertz (Hz)

Back

nano (n)

Front

x 10 to the power of -9

Back

Diffraction

Front

The bending of waves around objects or through gaps

Back

Activity

Front

The activity of a source is defined as the rate at which a source of unstable nuclei decays measured in decays per second. The unit for activity is the Becquerel (Bq) where 1 Bq = 1 decay per second.

Back

Absorbed Dose

Front

The amount of energy absorbed by every kilogram of material (tissue)
Measured in Grays (Gy)

Back

Amplitude

Front

Distance measured in metres(m)

Back

micro

Front

x 10 to the power of -6

Back

Period

Front

Time taken to produce one wave (s)

Back

Crest

Front

Top of wave

Back

Trough

Front

Bottom of wave

Back

Speed of Waves

Front

The distance in metres covered in a second by the wave
measured in metres per second (m/s)

Back

Mega (M)

Front

x 10 to the power of 6

Back

Weighting Factor

Front

The amount of harm a radiation causes
(is in the data booklet)