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This ontology covers classes and properties in the field of physics that are commonly used by astronomers. It includes terms from the IVOA Thesaurus plus terms from the UMD astronomical ontology
Ed Shaya
physics.owl
ablation
burn away
absolute temperature scale
absorption
absorption coefficient
absorptivity
acceleration
acoustics
acoustic wave
sound
sound wave
adiabatic process
adsorption
albedo
spherical albedo
reflectivity
Alfven surface
Alfven wave
hydromagnetic wave
alpha particle
angular momentum
angular velocity
antimatter
antineutrino
antinucleon
antiparticle
antiproton
atom
atomic isotope
atomic line
atomic nucleus
nuclei [atoms]
atomic physics
atomic process
axion
baryon
black body radiation
thermal black body radiation
Bose-Einstein Condensate
Bose-Einstein statistics
boson
bottom quark
boundary layer
bound-free transition
bound free transition
bow shock
bremsstrahlung
free free transition
free-free transition
brillouin scattering
brillouin spectrum
caustic
caustic crossing
celsius temperature scale
center of mass
The most common temperature scale for scientific work. The freezing point of water is 0 degrees and the boiling point of water is 100 degrees in this system.
centrifugal force
centripetal force
Cerenkov radiation
Cerenkov effect
Chandrasekhar-Schoenberg limit
Chandrasekhar-Schonberg limit
Schonberg-Chandrasekhar limit
Schoenberg-Chandrasekhar limit
charm quark
circular polarization
circular polarisation UK
cluster
coherence
collision
collision process
collisional excitation
collisional plasma
collision broadening
collision process
collisional process
collision strength
Compton effect
Compton scattering
Compton wavelength
condensation
conductance quantum is the quantized unit of conductance. It is defined by \frac{2e^2}{h}
conduction
convection
cooling
current
current sheet
cyclotron radiation
damping constant
deceleration
degenerate matter
density
specific gravity
differential rotation
diffraction
diffraction patterns
diffusion
dimension
dipole
dipole strength
dispersion
dissipation
Doppler broadening
Doppler effect
top quark
drift wave
dynamical time
dynamics
dynamo theory
Einstein coefficient
Einstein effect
Einstein shift
elasticity
electrical property
electric charge
electric constant
electric current
electric dipole
electric dipole strength
electric field
electricity
electrodynamics
electromagnetic
electron
electron
electron beam
electron density
electron gyromagnetic ratio
electronic state
electronic transition
electron magnetic moment
electron pumping
electron temperature
electrostatic wave
elementary particle
elementary particle scattering
electromagnetic field
electromagnetic field
emerging flux
electromagnetic field
electromagnetic force
electromagnetic interaction
emission
emission coefficient
emissivity
electromagnetic radiation
electromagnetic wave
electromagnetic theory
energetic particle
energy
energy content
energy density
energy distribution
energy level
energy source
energy spectrum
energy-transfer
energy transfer
enthalpy
entropy
e-process
equation of state
equilibrium figure
equipotential surface
escape velocity
evaporation
excitation
extreme ultraviolet radiation
EUV
Faraday effect
far infrared radiation
far ultraviolet radiation
FUV
Fermi interaction
fermion
Fermionic Condensate
Fermi Dirac nucleus
Feynman diagram
Feynman integral
field equation
field of optics
fine structure
fission
flow instability
fluid dynamics
fluid mechanics
fluorescence
flux
flux density
focal length
Fokker-Planck equation
Fokker Planck equation
forbidden transition
force
free-bound emission
free bound emission
free-free emission
free free emission
friction
fundamental frequency
The lowest characteristic frequency of oscillation of a dynamical system.
fundamental mode
fundamental particle
fusion
future light cone
gamma-ray radiation
gamma-ray
gamma radiation
gamma-ray scattering
gamma ray scattering
gamma-ray spectrum
gamma ray spectrum
gas distribution
gas dynamics
gas kinematics
gaseous disk
gaseous sphere
general theory of relativity
g-factor
gluon
gravitating disk
gravitation
gravitational constant
gravitational effect
gravitational energy
gravitational field
gravity field
gravitational force
force of gravity
gravitational redshift
gravitational wave
graviton
gravity
acceleration of gravity
gravity wave
gyromagnetic ratio
gyrosynchrotron radiation
hadron
hadron barrier
half-wave dipole
half wave dipole
halfwave dipole
Hanle effect
The Hanle Effect describes resonant line scattering polarization in a magnetic medium.
harmonic frequency
harmonic overtones
harmonics
Hawking radiation
heat-transfer
high-energy radiation
high energy radiation
high-temperature
hot
high temperature
hydrodynamics
hydrostatic equilibrium
infrared
infrared emission
infrared radiation
intensity
specific intensity
interference wave
internal motion
inverse Compton effect
inverse Compton scattering
inverse maser
ionizing shock wave
ion plasma wave
irradiance
isothermal sphere
Jeans length
Jeans mass
jump condition
kinematics
kinetic energy
lepton
light absorption
light coherence
light cone
light emission
light interference
light polarization
polarization wave
light scattering
line shift
spectral line shift
local thermodynamic equilibrium
LTE
low-temperature plasma
luminescence
candoluminescence
luminosity
macroturbulence
magnetic dipole strength
magnetic field
magnetic moment
magnetic moment anomaly
magnetic monopole
magnetic pole
magnetic property
magnetohydrodynamics
MHD
hydromagnetics
maser
mass
mass density
mass distribution
matter
meson
microwave
microwave emission
microwave radiation
microwave spectrum
Mie scattering
millimeter radiation
millimeter wave
mm radiation
MOdified Newtonian Dynamics
MOND
momentum
motion
muon
muon neutrino
naked singularity
near infrared radiation
near ultraviolet radiation
NUV
neutral gas
neutrino
neutron
Newtonian gravitation
non-equilibrium flow
nonequilibrium flow
non-radial pulsation
nonradial pulsation
non-thermal radiation
nonthermal radiation
nuclear fission
nuclear fusion
nuclear physics
nuclear radiation
nuclear reaction
nutation
oblique rotator
opacity
optical radiation
optical pathlength
optical property
oscillation
oscillator strength
f value
f-value
overtone frequency
harmonic overtones
overtones
overtone mode
overtones
pair annihilation
pair production
particle
particle acceleration
particle accretion
particle beam
particle creation
particle density
particle interaction
particle mass
particle production
Paschen-Back effect
the Paschen-Back effect is the splitting of atomic energy levels in the presence of a strong magnetic field. This occurs when an external magnetic field is sufficiently large to disrupt the coupling between orbital and spin angular momenta. This effect is the strong field generalization of the Zeeman effect.
past light cone
p branch
A set of lines in the spectra of molecules corresponding to unit increases in rotational energy.
Penrose process
phase space
phosphorescence
photon
physical constant
fundamental constant
physical distance
pion
pixel
picture element
voxel
Planck black body formula
Planck constant
plane polarization
linear polarization
plane polarisation UK
plasma
cosmic plasma
plasma loop
plasma physics
plasma wave
Poincare theorem
polarization charge separation
polarized light
polarized radiation
polarised light UK
polytrope
population inversion
positron
potential energy
potential theory
power
Poynting-Robertson effect
Poynting Robertson effect
p process
precession
precursor pulse
pressure
pressure broadening
proton
pulsation mode
pulse
pulse duration
pulse energy
pulse intensity
pulse profile
pulse structure
pulse width
pulse window
q branch
quanta
quantum
quantization
quantisation UK
quantum field theory
quantum mechanics
quantum theory
quark
radial pulsation
radial velocity
radiation
radiation damping
radiation field
radiation measurement
radiation mechanism
radiation pressure
radiation scattering
electromagnetic wave scattering
radiative equilibrium
radiative recombination
radiative capture
radiative transfer
radio absorption
radioactive decay
radioactivity
radio emission
radio frequency
radio radiation
radio wave
radio recombination line
radio spectrum
Raman scattering
Rankine-Hugoniot relation
Rayleigh
Rayleigh criterion
Rayleigh limit
Rayleigh limit
Rayleigh number
Rayleigh scattering
Rayleigh-Taylor instability
Razin effect
The presence of a thermal plasma in the emitting region means that the refractive index of the medium is less than unity and the phase velocity of electromagnetic waves is greater than $c$. As a result, synchrotron radiation is suppressed at frequencies where the refractive index becomes significantly less than 1. This is often called Tsytovich-Razin effect. The consequence is a low-frequency cutoff near
\begin{displaymath} \rm { {\nu_{R}} = {{4 c n e} \over {3 B_{\bot}}} = {{2\nu_{p... ... \nu_{0}}} \sim {{2 \times 10^{-5} n} \over {B_{\bot}}} MHz} \end{displaymath}
reference frame
refraction
refraction angle
angle of refraction
refractive index
relativistic effect
relativistic electron
relativistic fluid dynamics
relativistic mechanics
relativistic particle
relativistic plasma
relativistic gas
relativistic velocity
relativity
retardation
rigid body rotation
rotating body
rotating shell
rotation
rotational velocity
scattering
Schwarzschild metric
Schwarzschild radius
scintillation
self-absorption
self absorption
shock
shock wave
singularity
sound speed
speed of sound
space-time curvature
space-time singularity
special theory of relativity
spectrum
s-process
s process
Stark broadening
stimulated emission
stimulated radiation
stokes parameter
strange quark
strong interaction
subatomic particle
submillimeter radiation
submillimeter wave
symmetry breaking
synchrotron radiation
physical system
physical system
tangential velocity
tau particle
tau neutrino particle
temperature
temperature fluctuation
temperature scale
thermal conductivity
thermal emission
thermal equilibrium
thermal instability
thermal property
thermal radiation
thermal stability
thermal structure
thermionic emission
dark current
thermodynamic equilibrium
thermodynamics
thermoluminescence
thermonuclear reaction
Thomson scattering
three-body problem
three body problem
three-dimensional spectrum
three dimensional spectrum
top quark
transition probability
transmission
transparency
transport process
two-dimensional spectrum
two dimensional spectrum
ultraviolet
UV
ultraviolet radiation
ultraviolet_light
up quark
vacuum
velocity
velocity dispersion
velocity distribution
velocity ellipsoid
velocity field
velocity of light
speed of light
velocity space
vibration
vibrational spectrum
virial theorem
viscosity
visible radiation
light
visible spectrum
waveform analysis
wavelength
wave measurement
wave motion
wave propagation
weak gauge boson
weak interaction
W-
W+
X-ray absorption
X-ray diffraction
X-ray emission
X-ray fluorescence
X-ray polarization
X-ray radiation
X-ray
X-ray scattering
X-ray spectroscopy
X-ray spectrum
Zeeman splitting
spectral line splitting
line splitting
Z0
With Respect To. Velocity is a motion with respect to some other Thing.
Number of Protons
This allows giving a frequency, wavelength or Energy for the reference Amplitude.
s
d
f
p
F
D
P
S
Kelvin
Temperature scale used for ordinary purposes in the United State
Conversion from Centigrade is Centigrade*9/5 + 32.
Celsius