Input interpretation
beryllium | work function
Results
4.98 eV
polycrystalline | 4.98 eV
Threshold frequency
1.204×10^15 Hz (hertz)
Electromagnetic frequency range
NUV (near ultraviolet) | UVC
Unit conversion
7.98×10^-19 J (joules)
Comparisons as energy
≈ ( 0.18 ≈ 1/5 ) × Hartree energy ( ≈ 4.4×10^-18 J )
≈ 0.37 × Rydberg energy ( ≈ 2.2×10^-18 J )
≈ (0.6 to 2.6) × energy of a covalent bond ( 3×10^-19 to 1×10^-18 J )
Corresponding quantities
Thermodynamic temperature T from E = kT: | 57791 K (kelvins)
Photon wavelength λ from E = hc/λ: | 249 nm (nanometers)
Spectroscopic wavenumber ν^~ from ν^~ = E/(hc): | 4.017×10^6 m^(-1) (reciprocal meters) | 40166 cm^(-1) (reciprocal centimeters)