Input interpretation
![europium | work function](../image_source/8a5f6c3716d969cf05c038ca149dbafe.png)
europium | work function
Results
![2.5 eV](../image_source/75b4065591d9b214ddc7a960d39c0102.png)
2.5 eV
![polycrystalline | 2.5 eV](../image_source/eb203fc8549682e22cd81e0ec5c72a19.png)
polycrystalline | 2.5 eV
Threshold frequency
![6.045×10^14 Hz (hertz)](../image_source/1d30f0137d58a3ae39e5406b6d8dd440.png)
6.045×10^14 Hz (hertz)
Electromagnetic frequency range
![visible light](../image_source/1726617ad6f19a84f4fbdeb255e56116.png)
visible light
Unit conversion
![4.01×10^-19 J (joules)](../image_source/b7a33bbd8dc6df57ab72df134171b783.png)
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 )](../image_source/d5e99f49ec3760dab1b22239714364cd.png)
≈ (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 )](../image_source/aaf43a60627bf9f816cadc140ff08a60.png)
≈ (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 )](../image_source/7967cf6759e617aa1bf0be168665b8fc.png)
≈ (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)](../image_source/5636cce760b0ef78cee8ce899dcf132d.png)
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)](../image_source/2122565342a2c579fcc199bbb2887784.png)
Thermodynamic temperature T from E = kT: | 29011 K (kelvins)
![Photon wavelength λ from E = hc/λ: | 496 nm (nanometers)](../image_source/2938d36aed20861612b45ade7e2773c9.png)
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)](../image_source/cbcda4e0cc6290a20364cb89502b4056.png)
Spectroscopic wavenumber ν^~ from ν^~ = E/(hc): | 2.016×10^6 m^(-1) (reciprocal meters) | 20164 cm^(-1) (reciprocal centimeters)