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Law of Conservation of energy
energy can be converted from one form to another but can be neither created nor destroyed
an electric and magnetic disturbance traveling through space at the speed of light
a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe
Einstein's equation proposing that energy has mass; E is energy, m is mass, and c is the speed of light
Man Made Radiation
medical xrays, nuclear medicine, consumer products and nuclear power are examples of what type of radiation
Naturally Occuring Radiation
-terrestrial radiation (rocks, buildings)
-inside human body
-radon in the air
Equator at Sea Level
where is the best place to live because vanhalen belts and atmosphere belts are protecting you
Describes biologic radiation effects that are predictable and their intensity is does-dependent. These effects occur only after a certain threshold amount of exposure has been received
LET-Linear Energy Transfer
____ is a measure of the rate at which energy is transferred from ionizing radiation to soft tissue.
Production of captured shadow images on photographic film through the action of ionizing radiation passing through the body from an external source
procedure for viewing the interior of the body using x-rays and projecting the image onto a television screen
is directly proportional to the number of electrons crossing the tube and is therefore directly proportional to the number of x-rays created
measures exposed based on ionization of air
Unit of measurement used for radiation dosage
a unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second
A unit for expressing the kinetic energy of subatomic particles; the energy acquired by an electron when it is accelerated by a potential difference of 1 volt; equals 1.6 x 10⁻¹² erg or 23.1 kilocalories/mole (abbreviation: eV).
when the number of neutrons greatly out numbers the number of protons that means what?
a positively charged atom that is released in the disintegration of radioactive elements and that consists of two protons and two neutrons
NCRP (national council of radiological protection)
they come up with the radiation limits for occupational dose limits, and non occupational limits
50 rem (500 mSv)
NCRP Nonstochastic effect for all other body parts other than the lens for occupational is what
.5 rem (5.0 mSv)
NCRP Effective dose limit for infrequent exposure for nonoccupational public exposure for a year
.1 rem (1 mSv)
NCRP Effective dose limit for frequent exposure for nonoccupational public exposure for a year
1.5 rem 15 mSv
NCRP Effective dose limit for eye exposure for nonoccupational public exposure for a year
5 rem (50 mSv)
NCRP Effective dose limit for skin and extremity exposure for nonoccupational public exposure for a year
.1 rem (1.0 mSv)
NCRP Effective dose limit for trainees under 18 for nonoccupational public exposure for a year
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