10 femtometres
10 fmLength · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Length & distance
Just how long is 10 femtometres?
Microscopic
10 fm
10 femtometres
The quantity is exact as entered.
10 fmLength
0 - shared origin
Atomic nucleus
An atomic nucleus is the compact central part of an atom, made from protons and neutrons.
10 fmCharacteristic size
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
10 femtometres is approximately equal to the characteristic size of an atomic nucleus.
Measurements, assumptions & sources +
10 femtometres
Length: 10 fm; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Atomic nucleus
Characteristic size: 10 fm; representative.
A 10 fm diameter scale model of a heavy nucleus. Nuclear size depends on the number of nucleons.
University of Utah — Cell size and scale
The marked characteristic size is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
Compare 10 femtometres with the characteristic size of an atomic nucleus. The notes below explain how each value was chosen.
Atomic nucleus
10 fmCharacteristic size · representative
A 10 fm diameter scale model of a heavy nucleus. Nuclear size depends on the number of nucleons.
- Comparing
- Length ↔ Characteristic size
- Relative size
- 10 femtometres is approximately equal to the characteristic size of an atomic nucleus.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- The characteristic size of an atomic nucleus: This is a representative comparison value; individual specimens or conditions can vary.
This comparison follows the selected length only; other dimensions may differ.
1 × 10⁻¹⁴ mmetres
3.2808 × 10⁻¹⁴ ftfeet
6.2137 × 10⁻¹⁸ mimiles
6.6846 × 10⁻²⁶ AUastronomical units
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