Noun. 1. invariant-a feature (quantity or property or function) that remains unchanged when a particular transformation is applied to it. characteristic, feature-a prominent attribute or aspect of something; the map showed roads and other features; generosity is one of his best characteristics.
The part of the sun that is going to emit the most visible light is going to be the Photosphere.he photosphere is the layer of the sun that emits visible light.  The light is emitted by hydrogen atoms and is bright red. Edit. Share to: Answered. In Astronomy.
So the Sun doesn't give off any gamma rays to speak of. The Sun does, however, emit x-rays, UV, light (of course!), IR, and even radio waves. The peak of the Sun's energy output is actually in the visible light range.This may seem surprising at first, since the visible region of the spectrum spans a fairly narrow range.he graph below shows a simplified representation of the energy emissions of the Sun versus the wavelengths of those emissions. The y-axis shows the relative amount of energy emitted at a given wavelength (as compared to a value of 1 for visible light). The x-axis represents different wavelengths of EM radiation.