Shared Flashcard Set

Details

RTE 1401
Week 1
50
Physics
Undergraduate 1
06/07/2014

Additional Physics Flashcards

 


 

Cards

Term
Electromagnetic spectrum
Definition
A way of grouping different electromagnetic radiations
Term
all member of the electromagnetic spectrum have the same
Definition
velocity
Term
members of the electromagnetic spectrum differs in the
Definition
wavelength and velocity
Term
list the members of the electromagnetic spectrum from lowest to highest
Definition
Radio waves
microwaves
infraed light
visible light
ultraviolet light
X rays
Gamma rays
Term
List the 4 properties of electromagnetic energy
Definition
Amplitude
wavelength
frequency
velocity
Term
amplitude
Definition
height of a wave
Term
wave length
Definition
distance from crest to crest and is measured in anstroms
Term
Frequency
Definition
measured in hertz
the rate of rise and fall
directly related to energy
Term
Velocity
Definition
always constant
travels at the speed of light
Term
what is the speed of light
Definition
3 x 10^8 m/s
186,000 miles/sec
Term
binding energy
Definition
is higher in the K shell electrons
Term
Total energy
Definition
is highest in the outer shells
decreases the closer the shell gets to the nuclear
Term
Ion
Definition
is an atom that gains or looses 1 or more electrons
Term
cation
Definition
an ion is positively charge
has more protons than electrons
Term
anion
Definition
a negatively charged ion that has more electrons than protons
Term
2n^2
Definition
how to find the number of electrons that belong on a shell
Term
isotope
Definition
atoms of the same element with the same number of protons but different neutrons
Term
isotone
Definition
atoms of an element with the same number of neutrons and different protons
Term
isobar
Definition
atoms in an element with the same atomic mass but different atomic number
Term
isomer
Definition
atoms in and element with the same everything
Term
inverse square law
Definition
the intensity of an x ray beam is inversely proportional to the square of the distance from the source.
Term
inverse square law
Definition
beam intensity varies as a function of the square of the distance
Term
inverse square law
Definition
as SID increases the x ray beam intensity decreases because the beam is spread over a large area in the image receptor
Term
inverse square law
Definition
I1/I2=D2^2/D1^2
Term
inverse square law states that when distance is doubled
Definition
intensity is decreased by a factor of 4
Term
inverse square law states that when distance is 1/2
Definition
intensity is increased by a factor of 4
Term
highly penetrating and invisible rays
Definition
x rays give of what type of rays
Term
x rays are electrically neutral meaning
Definition
no mass, no charge
Term
x rays give of what type of energy
Definition
poly energetic and heterogeneous meaning many energies
Term
how does x rays react with surfaces
Definition
cannot e focused by lenses and do not reflect on surfaces
Term
how does x rays interact with matter
Definition
ionizes all matter and causes biological and chemical changes
Term
how does x rays travel
Definition
in a straight line an at the speed of light
Term
what does x rays produce
Definition
secondary and scatter radiation
Term
what does x rays do with film
Definition
they affect photographic film
Term
what does x rays do to materials
Definition
causes materials to florescence
Term
wave particle duality
Definition
x rays possesses properties of both waves(energy) and particles(matter)
Term
Cathode and anode
Definition
2 main components of the x ray tube
Term
focusing cup
Definition
is on the cathode
focus electrons using negative charge
made of nickle
Term
filament
Definition
made of thoriated tungsten
boils of electrons
needs 3-6 amps to heat
Term
theomonic emission
Definition
the process of boiling of electrons when heated
Term
space charge effect
Definition
electrons because of theromonic emission creates a cloud that becomes so great that it opposes the emission of any more electrons
Term
rotating or stationary anode
Definition
has a focal tract/target and is made of tungsten-rhenium
Term
Rotor
Definition
wrapped with copper
works through electromagnetic induction
rotates @ low rpm of 3600 and high of 10,000.
Term
most commonly used rotor
Definition
high capacity at 10000 RPM
Term
stators
Definition
electro-magnets that move the rotor
located outside the housing tube
Term
stem
Definition
connects disk and rotors and is made of molybdenum
Term
focal spot or point
Definition
the exact area of target where electron beam strikes and
produces x rays and releases it isotropically
Term
effective focal spot
Definition
x rays that exit the tube through the window.
Term
line focus principle
Definition
the smaller the anode angle, the smaller the effective focal spot giving better detail.
Term
anode heel effect
Definition
x ray intensity is greater on the cathode side.
this is more prevalent with a smaller anode angle.
because electrons interacts with the disk.
Supporting users have an ad free experience!