physics, mathematical physics, philosophy of physics
theory (physics), model (physics)
experiment, measurement, computable physics
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Tools
Structural phenomena
Types of quantum field thories
The femtometer is a physical unit of length.
A femtometer (abbreviated ) is one th of a meter:
The radius of the proton is about .
See also
Last revised on October 27, 2020 at 15:12:45. See the history of this page for a list of all contributions to it.