History
Who discovered x-rays?
What is the SI unit for measuring effective dose?
Sievert
What is the smallest quantity of electromagnetic energy?
Photon
What is the formula to calculate the maximum number of electrons per shell?
2n2
What is the SI unit of magnetic field strength?
Tesla, T
William D. Coolidge invented what?
The Coolidge tube
What is the SI unit for radioactivity?
Becquerel, Bq
What is the velocity of x-rays?
Speed of light or 3 x 108 m/s
Isotopes have a different number of...
Neutrons
What type of magnet is created by wrapping wire around an iron core?
Electromagnet
What were the two biggest problems with early x-ray machines?
They caused radiation burns and electrocutions
Explain the inverse square law.
Intensity decreases with the square of the distance from a source
True or False: Are x-rays electrically charged?
False
What is the atomic number?
The number of protons within in the nucleus of an atom
What is the formula that relates speed, frequency, and wavelength together?
v = fλ
Why is lead shielding important?
To restrict radiation exposure
What happens to current if resistance increases?
Current decreases
The energy of a photon is directly proportional to...
Frequency
Radioisotope
What is the formula for Planck's quantum theory?
E = hf
What is the purpose of AEC?
Measures the amount of radiation reaching the IR and stopping exposure when the maximum amount has been reached.
In a parallel circuit, voltage is..
Equal across each branch
Electrons flowing through a conductor
What occurs during beta decay?
A neutron is converted into a proton
What term describes the tendency of a material to become magnetized?
Magnetic susceptibility