Energy & Electricity: Flashcards
The binding energy of inner (K shell) electrons is greatest, resulting…
in higher energy photons when they are ejected during characteristic radiation production…
Characteristic radiation is a discrete…
(just under 70 keV)
All Ionizing radiation has a wavelength of…
less than 1 nanometer
Therapeutic radiation has the shortest
wavelength… shorter than X-rays and gamma rays
The smallest particle of electromagnetic radiation is the…
photon- in groups, they are called quanta
Sine waves have?
amplitude, frequency, wavelength and velocity-
Wavelength determines?
frequency: short wavelength = higher frequency (more cycles per
unit time)
Velocity for E-M radiation is always the speed of?
light
X-rays Travel in straight lines at…
the speed of light
X-rays Diverge into space from source until…
absorbed
X-rays Cause certain crystals to…
fluoresce
X-rays Have a photographic…
effect
X-rays Cannot be detected…
by human senses
X-rays have Differential penetration through matter is determined by?
mass or density of that matter
X-rays Cannot be refracted by a?
lens
