The speed of light c,"free space impedance z, Planck's Constant h and Newton's Gravity Constant G.
Planck's Constant h and the free space impedance z are related, by two electromagnetic constants, W and C. h = WC and z= W/C. W = 500E-18 Webers (volt second) and C= 4/3 E-18 Coulombs. h=zC2.
The Photon has charge C and is represented as quark (13U,1d).
examples: 1, -2, 3.15, 0xabcd
Mathematical constants are always single-valued. That is what is constant about them. Examples are pi and e. Physical constants could have values that change due to variable conditions.
A constant variable is a variable that gets changed by a physical substance
valid contract
Some examples of constants include the following: Avogadro's number, which is 6.022 x 1023 of anything Speed of light in a vacuum, which is exactly 299,792,458 m/s 1 mole of any gas is 22.4L at STP (STP is 0 °C and 1 atm of pressure.)
f(x) = ax + b is a linear function of x, where a and b are constants.
jag wayere
Egg Yolk
Constants, also known as control variables, do not change during an experiment. These variables are kept consistent to ensure that the only factor being tested is the independent variable. Examples of constants include temperature, pressure, and time.
Some strings are constants, others aren't; some constants are strings, other aren't. So these are unrelated things. Examples: "text" -- constant string 123 -- constant number char s[40] -- variable string
There are 4 constants.
Variables change, constants do not.