Input interpretation
cerium | work function
Results
2.9 eV
polycrystalline | 2.9 eV
Threshold frequency
7.012×10^14 Hz (hertz)
Electromagnetic frequency range
visible light
Unit conversion
4.65×10^-19 J (joules)
Comparisons as energy
≈ ( 0.21 ≈ 1/5 ) × Rydberg energy ( ≈ 2.2×10^-18 J )
≈ (0.3 to 1.5) × energy of a covalent bond ( 3×10^-19 to 1×10^-18 J )
≈ (1.1 to 1.3) × energy of a photon of green light ( 2.2 to 2.5 eV )
Corresponding quantities
Electromagnetic wave frequency ν from E = hν: | 701 THz (terahertz) | 7.012×10^14 Hz (hertz)
Thermodynamic temperature T from E = kT: | 33653 K (kelvins)
Photon wavelength λ from E = hc/λ: | 428 nm (nanometers)
Spectroscopic wavenumber ν^~ from ν^~ = E/(hc): | 2.339×10^6 m^(-1) (reciprocal meters) | 23390 cm^(-1) (reciprocal centimeters)