the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
a typeface is which each character is given the same width (as by a typewriter)
unvarying in nature
a quantity that does not vary
steadfast in purpose or devotion or affection
uninterrupted in time and indefinitely long continuing
a number representing a quantity assumed to have a fixed value in a specified mathematical context
