| NOUN | attribute | flux density, flux | (physics) the number of changes in energy flow across a given surface per unit area |
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| Meaning | (physics) the number of changes in energy flow across a given surface per unit area. | |
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| Synonym | flux | |
| Category | physics, natural philosophy | The science of matter and energy and their interactions |
| Broader | density, denseness | The amount per unit size |