Source Definition

Apr 7, 20221 wikipedia describes a mathematical definition of a point source as "a singularity from which flux or flow is emanating". The usual definition in physics describes it just as a. Jun 28, 2015brightness of light number of photons energy of each photon wavelength of each photon power of light source then i knew that there are different types of cone cells that.

May 13, 20240 i have been trying to understand the significance of the number $685$ in the definition of lumen: The accepted answer states that a heat engine has to operate in a cycle by definition. Definition the turbulence intensity, also often refered to as turbulence level, is defined as:

Aug 18, 2024i think that the “methaphisical” reason is that, the perturbation on the sources of the field due to the test charge is negligible when the test charge is “infinitesimal”. I modeling convection in magnetic field and i need to define new source which have impact on my fluid. I am just wondering about the correct definition of left and right circularly-polarized light.