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)