Scientific Constants
Your calculator comes with 40 built-in scientific constants that can be used in any mode besides BASE-N.
Each scientific constant is displayed as a unique symbol (such as π), which can be used inside of calculations.
To input a scientific constant into a calculation, press 
(CONST) and then input the two-digit number that corresponds to the constant you want.
Example 1: To input the scientific constant C0 (speed of light in a vacuum), and display its value
(CONST)
(C0)
Example 2: To calculate C0 = 1 √ε0μ0 (MthIO-MathO)
1
(CONST)
(ε0)
(CONST)(μ0)
The following shows the two-digit numbers for each of the scientific constants.
| 01: (mp) proton mass | 02: (mn) neutron mass |
|---|---|
| 03: (me) electron mass | 04: (mμ) muon mass |
| 05: (a0) Bohr radius | 06: (h) Planck constant |
| 07: (μN) nuclear magneton | 08: (μB) Bohr magneton |
09: ( ) Planck constant, rationalized |
10: (α) fine-structure constant |
| 11: (re) classical electron radius | 12: (λC) Compton wavelength |
| 13: (γp) proton gyromagnetic ratio | 14: (λCp) proton Compton wavelength |
| 15: (λCn) neutron Compton wavelength | 16: (R∞) Rydberg constant |
| 17: (u) atomic mass unit | 18: (μp) proton magnetic moment |
| 19: (μe) electron magnetic moment | 20: (μn) neutron magnetic moment |
| 21: (μμ) muon magnetic moment | 22: (F) Faraday constant |
| 23: (e) elementary charge | 24: (NA) Avogadro constant |
| 25: (k) Boltzmann constant | 26: (Vm) molar volume of ideal gas (237,15K; 100kPa) |
| 27: (R) molar gas constant | 28: (C0) speed of light in vacuum |
| 29: (C1) first radiation constant | 30: (C2) second radiation constant |
| 31: (σ) Stefan-Boltzmann constant | 32: (ε0) electric constant |
| 33: (μ0) magnetic constant | 34: (Φ0) magnetic flux quantum |
| 35: (g) standard acceleration of gravity | 36: (G0) conductance quantum |
| 37: (Z0) characteristic impedance of vacuum | 38: (t) Celsius temperature |
| 39: (G) Newtonian constant of gravitation | 40: (atm) standard atmosphere |
The values are based on CODATA (2014) recommended values.
