Chapter 1 physics
What is the max operating mA of most general diagnostic x-ray units?
1200
Wilhelm Conrad Roentgen discovered X-rays in what year?
1895 (nov 8)
Which of the following is defined as the number of individual atoms decaying per second?
Becquerel
Which system uses the force of gravity to define mass?
British System
Who invented the tube that Roentgen was using in his experiments that led to the discovery of x-rays?
Crookes
When was the first radiograph produced?
December 22, 1895
What is the significance of William Rollins in X-ray history?
First to report dangers of radiation
Which suspension system would offer the least range of motion? overhead mount, floor mount,
Floor mount
The SI unit of measure for the dose that a radiation therapy patient receives is
Gray
Which of the following is solely a property of mass? Time, inertia, velocity, energy
Inertia
All of the following are derived quantities except: Velocity, Momentum, Force, Mass
Mass
What is the unit of measure for occupational exposure?
REM
What does the Roentgen quantify?
Radiation intensity
What does the Curie quantify?
Radioactivity
What was the subject matter of the first radiograph?
Roentgen's wife's hand
Who is credited with early experimentation and invention of protective devices for x-ray equipment?
Rollins
In his initial research, Roentgen identified most of the properties of x-rays that we know today t or f
T
What are the properties of X-rays defined by Roentgen
Travels in straight lines, travels at the speed of light, can ionize matter, produces chemical and biological changes in matter, causes fluorescence in certain crystals, cannot be focused by a lens, affects photographic film, produces secondary and scatter radiation.
A unit of measure is a value agreed upon by a society to give meaning to a quantity. T or F
True
What does Rad quantify?
biological effects of radiation on humans and animals. ( amount of energy deposited in any target)
What is the SI unit for exposure?
coulomb/kilogram
Which of the following is a unit of measure for a fundamental quantity? Newton, Kilogram, m/s, kg-m/s
kilogram
What does Rem quantify?
occupational exposure or dose equivalent
what is inertia?
property of an object with mass that resists a change in its state of motion.
What is energy?
the ability to do work and has two states: kinetic and potential.
