Convert photon counts to watts at a given wavelength.

Uses E_photon = hc / lambda, with hc = 1.98644585714893e-16 J·nm. Vectorised over both n and lambda.

Usage

photon2W(n, lambda)

Arguments

n

Photon count(s) per second per m^2 per nm.

lambda

Wavelength(s) in nm.

Value

Numeric vector of spectral irradiance in W/m^2/nm.

See also

W2photon

Examples

photon2W(1e15, 555)
#> [1] 0.0003579182