Input interpretation
europium | work function
Results
2.5 eV
polycrystalline | 2.5 eV
Threshold frequency
6.045×10^14 Hz (hertz)
Electromagnetic frequency range
visible light
Unit conversion
4.01×10^-19 J (joules)
Comparisons as energy
≈ (0.3 to 1.3) × energy of a covalent bond ( 3×10^-19 to 1×10^-18 J )
≈ (1 to 1.1) × energy of a photon of green light ( 2.2 to 2.5 eV )
≈ (1.3 to 2) × energy of an infrared light photon ( 2×10^-19 to 3×10^-19 J )
Corresponding quantities
Electromagnetic wave frequency ν from E = hν: | 604 THz (terahertz) | 6.045×10^14 Hz (hertz)
Thermodynamic temperature T from E = kT: | 29011 K (kelvins)
Photon wavelength λ from E = hc/λ: | 496 nm (nanometers)
Spectroscopic wavenumber ν^~ from ν^~ = E/(hc): | 2.016×10^6 m^(-1) (reciprocal meters) | 20164 cm^(-1) (reciprocal centimeters)