Physical constants
| Quantity | Symbol | Value (eV units) |
| Planck's constant | h | 4.1357 × 10-15 eV s |
| reduced Planck's constant | ℏ = h/2π | 6.5821 × 10-16 eV s |
| Boltzmann's constant | k | 8.6173 × 10-5 eV K-1 |
| Stefan-Boltzmann constant | σ | |
6.582119569...×10−16 eV⋅s. The constant was postulated by Max Planck in 1900 as a proportionality constant needed to explain experimental black-body radiation. History · Origin of the constant · Reduced Planck constant |
Concise form, 4.135 667 696... x 10-15 eV Hz ; Click here for correlation coefficient of this constant with other constants ; Source: 2022 CODATA |
Planck constant in eV, h, 4.1356692E-15, 1.2E-21, eV s, 0.30. Planck constant over 2p, hbar, 1.05457266E-34, 63.0E-42, J s, 0.60. Planck constant over 2p in eV ... |
Concise form, 6.582 119 569... x 10-16 eV s ; Click here for correlation coefficient of this constant with other constants ; Source: 2022 CODATA |
Physical constants ; Planck's constant. h. 6.6261 × 10-27 cm2 g s · 4.1357 × 10-15 eV s ; reduced Planck's constant. ℏ = h/2π. 1.0546 × 10-27 cm2 g s · 6.5821 × 10- ... |
9 авг. 2020 г. · Planck's constant, h, 6.626 068 96 (33) x 10−34 J • s. Reduced Planck's constant, ℏ=h2π. 1.054 571 628 (53) x 10−34 J • s. Proton mass, mp. |
Planck's constant 'h' is measured in Joule-seconds in the SI system. and Electronvolt or (eV) in the M.K.S system. E = (12400/λ) eV for λ in Å. |
3 окт. 2021 г. · Planck's constant is 6.6something E-34 Joules/second. What, you can't convert that to something else? |
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