Input interpretation
![potassium | work function](../image_source/417b4ced3091c843d18e643f23b613db.png)
potassium | work function
Results
![2.29 eV](../image_source/196c04ed39f9fdc752ecfcd94e4791fa.png)
2.29 eV
![polycrystalline | 2.29 eV](../image_source/72aeae19d7244c38bc84f7a0401ad766.png)
polycrystalline | 2.29 eV
Threshold frequency
![5.537×10^14 Hz (hertz)](../image_source/b78863528ad8960c4b4b7e761935f6a9.png)
5.537×10^14 Hz (hertz)
Electromagnetic frequency range
![visible light](../image_source/ca09de3b7b774a6a507ab03fa94d4fdc.png)
visible light
Unit conversion
![3.67×10^-19 J (joules)](../image_source/d28a0aaf00e3ca22a3f5725cb4bd5b66.png)
3.67×10^-19 J (joules)
Comparisons as energy
![≈ (0.2 to 1.2) × energy of a covalent bond ( 3×10^-19 to 1×10^-18 J )](../image_source/c8c0f270bc2fad28c8f8361249bc9d0a.png)
≈ (0.2 to 1.2) × energy of a covalent bond ( 3×10^-19 to 1×10^-18 J )
![≈ (0.9 to 1) × energy of a photon of green light ( 2.2 to 2.5 eV )](../image_source/2a7c6546a568dc4ac29aa21a3b1a7427.png)
≈ (0.9 to 1) × energy of a photon of green light ( 2.2 to 2.5 eV )
![≈ (1.2 to 1.8) × energy of an infrared light photon ( 2×10^-19 to 3×10^-19 J )](../image_source/5b4b4f834fc34578bf070b0868c84650.png)
≈ (1.2 to 1.8) × energy of an infrared light photon ( 2×10^-19 to 3×10^-19 J )
Corresponding quantities
![Electromagnetic wave frequency ν from E = hν: | 554 THz (terahertz) | 5.537×10^14 Hz (hertz)](../image_source/fbd206236ed3eb27d142681aa7b0eb98.png)
Electromagnetic wave frequency ν from E = hν: | 554 THz (terahertz) | 5.537×10^14 Hz (hertz)
![Thermodynamic temperature T from E = kT: | 26574 K (kelvins)](../image_source/fd3fb29eca69b9bf028d345f5c0da955.png)
Thermodynamic temperature T from E = kT: | 26574 K (kelvins)
![Photon wavelength λ from E = hc/λ: | 541 nm (nanometers)](../image_source/3c85c44737068ae30531f72a53020552.png)
Photon wavelength λ from E = hc/λ: | 541 nm (nanometers)
![Spectroscopic wavenumber ν^~ from ν^~ = E/(hc): | 1.847×10^6 m^(-1) (reciprocal meters) | 18470 cm^(-1) (reciprocal centimeters)](../image_source/065a82d0bca7498938c44279448284fa.png)
Spectroscopic wavenumber ν^~ from ν^~ = E/(hc): | 1.847×10^6 m^(-1) (reciprocal meters) | 18470 cm^(-1) (reciprocal centimeters)