Useful Constants

Mathematical Constants

Name Symbol Value
Euler's Constant γ 0.577215665
Square Root of Two √2 1.414213562
Golden Ratio τ 1.618033989
Euler's Number e 2.718281828
Pi π 3.141592654
Feigenbaum Constant - 4.669201661

Physical Constants

Name Symbol Value Units
Speed of Light in Vacuo c 2.997925 x 108 ms-2
Charge on an Electron e 1.602192 x 10-19 C
Avagadro's Number NA 6.022520 x 1023 mol-1
Planck's Constant h 6.626196 x 10-34 mol-1
Gravitational Constant G 6.67 x 10-11 Nm2kg-2
The Boltzmann Constant k 1.380622 x 10-23 JK-1
The Gas Constant R 8.31434 JK-1mol-1