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CASIO

User´s Guide

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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.

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