Booklet 1B - Cosmology (Equations) Flashcards
(Define symbols and units)
F - Gravitational Force (N)
G - Universal Constant of Gravitation (see data sheet - m3kg-1s-2)
m - mass (kg)
r - distance between centres of objects (m)
(Define symbols and units)
t’ - dilated time (s) observed in a different frame of reference
t - proper time (s) observed in the same frame of reference
v - relative velocity (ms-1)
c - speed of light (ms-1)
(Define symbols and units)
l’ - contracted length (m) observed in a different frame of reference
l - proper length (m) observed in the same frame of reference
v - relative velocity (ms-1)
c - speed of light (ms-1)
(Define symbols and units)
fo - observed frequency (Hz)
fs - frequency of source (Hz)
v - speed of wave (ms-1)
vs - relative speed of source (ms-1)
(Define symbols and units)
z - Redshift (no unit)
λobserved - observed wavelength (m)
λrest - stationary wavelength (m)
(Define symbols and units)
z - Redshift (no unit)
v - relative speed of source (ms-1)
c - speed of light (ms-1)
(Define symbols and units)
v - speed of recession of galaxy (ms-1)
Ho - Hubble Constant (see data sheet - s-1)
d - distance to galaxy (m)