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flux density

flux density

1 7.6
The amount of energy or particles that pass through each unit of area each second
  • noun
  • /flʌks ˈdɛn.sɪ.ti/
  • Specialized
translation icon : densidad de flujo
  • In the lab, we observed the flux density of particles to understand their behavior under different conditions.
  • photon flux density

Also known as PPFD, photosynthetic photon flux density.

Examples

  • Similarly, there is substantial self-shading in many desert plant canopies, so that lower leaves are mostly operating at low photon flux density (PFD).

    Academic text (1998)
  • Hell, we can envisage a series of measurements like this varying the neutrino beam energy, the flux density.

    Blog text (5)
  • "Flux density keeps going up as cost keeps going down," Jones said.

    Academic text (2003)
  • Well, let's just think about the magnitude and phase of the net flux density in this space.

  • MU naughty HA common unit for flux density is the Gauss.

  • The magnetic flux density in the in the solenoid of the bar magnets is of course, infinite.

  • So PFD stands for photosynthetic photon flux density, which is essentially the density of light particles that hit a measured area.

  • The scientist measured the flux density to determine how much energy was passing through the surface of the material.

  • To calculate the flux density, we divided the total energy passing through the area by the size of that area.

How Intense

flux density
  • Specialized
1 7.6
low density
  • Specialized
1 3.7

Surface Forms

flux density singular

Morphology

flux + density

The MWE's meaning is directly compositional from 'flux' (rate at which energy or particles pass through) combined with 'density' (quantity per unit area or volume), so a learner who knows both constituents can infer 'rate per unit area' or similar technical sense. Although the term is chiefly used in physics, its noun+noun composition follows regular compositional patterns and is cross-linguistically transparent rather than idiomatic.

Etymology

Flux density combines two clear images: flux, meaning a flow of particles or energy, and density, meaning how much is packed into an area. Imagine many tiny particles or arrows moving through a small net and count how many pass through each square every second; that picture shows why flux density means 'the amount of flow per area'.