Scientific Ontology

I

Waves

Radiation Intensity

Power transferred per unit area by a wave or radiation.

watt per square metre (W/m²)

Dimension: $[\,M T^{-3}\,]$

How values of radiation intensity span the physical world (in W/m², log scale).

Threshold of hearing

10^-12 W/m²

Solar constant

1.36 × 10³ W/m²

Lower limit10^-12 W/m²Upper limit10⁸ W/m²

Intensity

I = \dfrac{P}{A}