We know light bounces and reflects through objects, but how is light actually created?
In: Physics
When we say light, we’re actually referring to “Visible Light” on the electromagnetic spectrum. Basically… that’s a fancy way of saying radiation so light is pretty much the same as X-Rays, Radiowaves, Infrared (heat)…
In that way, it’s just a release of energy from an object. If it’s high energy (think Chernobyl) then it’ll be Gamma rays… think low energy (like burning gas) it’ll be things like infrared (heat).
In short, it’s just a reaction which gives off energy… like the electric current in a lightbulb meeting resistance… making the lightbulb hot (emitting Infrared) and giving out light (emitting visible light). So it’s just “created by” a reaction outputting enough energy that we can see it.
The law of thermodynamics state that energy can’t be created nor destroyed, so in a way it’s not “created” more “converted” from another form of energy which already exists.
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