1 picometre
1 pmLength · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Length & distance
Just how long is 1 picometre?
Microscopic
1 pm
1 picometre
The quantity is exact as entered.
1 pmLength
0 - shared origin
Electron
An electron is a fundamental subatomic particle with a negative electric charge, found in atoms and responsible for electricity and chemical bonding.
2.426 pmCompton wavelength
0 - shared origin
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. A ruler represents the selected distance or a measurement not visible in this view.
A little perspective
The compton wavelength of an electron is about 2.43 times 1 picometre.
Measurements, assumptions & sources +
1 picometre
Length: 1 pm; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Electron
Compton wavelength: 2.426 pm; measured constant.
The length shown is the electron Compton wavelength, not its diameter. In the Standard Model the electron is treated as pointlike; the cloud is a schematic.
NIST — 2022 CODATA fundamental constants
The marked compton wavelength is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
Compare 1 picometre with the compton wavelength of an electron. The notes below explain how each value was chosen.
Electron
2.426 pmCompton wavelength · measured constant
The length shown is the electron Compton wavelength, not its diameter. In the Standard Model the electron is treated as pointlike; the cloud is a schematic.
- Comparing
- Length ↔ Compton wavelength
- Relative size
- The compton wavelength of an electron is about 2.43 times 1 picometre. The compton wavelength of an electron is approximately 143% greater than 1 picometre.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- The compton wavelength of an electron: This is a measured value; check the notes for its source and scope.
This comparison follows the selected length only; other dimensions may differ.
1 × 10⁻¹² mmetres
3.2808 × 10⁻¹² ftfeet
6.2137 × 10⁻¹⁶ mimiles
6.6846 × 10⁻²⁴ AUastronomical units
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
A little smaller. A little larger.