5 femtometres
5 fmLength · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Length & distance
Just how long is 5 femtometres?
Microscopic
5 fm
5 × 10⁻¹⁵ mmetres
1.6404 × 10⁻¹⁴ ftfeet
3.1069 × 10⁻¹⁸ mimiles
3.3423 × 10⁻²⁶ AUastronomical units
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5 femtometres5 fmLength · definition
02
Atomic nucleus10 fmCharacteristic size · representative
Both marked spans share one linear scale. Artwork keeps its proportions; poses and surface detail are illustrative.
A little perspective
The characteristic size of Atomic nucleus is about 2 times the length of 5 femtometres.
Measurements, assumptions & sources +
5 femtometres
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Atomic nucleus
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?
The visual compares length with characteristic size. The records below preserve each value’s basis and caveats.
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
- Atomic nucleus is larger on this measurement by a factor of about 2. Atomic nucleus's selected measurement is approximately 100% greater than 5 femtometres's.
How to read the visual
The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.
- Atomic nucleus is labelled representative; treat the displayed value as a comparison anchor rather than false precision.
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.