I like the theorie

Awesome I have an Avatar oc Ora who is a Lightbender. Granted I came up with that when the original Avatar was still airing.

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Here is My girl ^_^

i love this, especially because i have thought about some sort of lightbending myself, including the invisibility-thing to me it seems logical that a skilled firebender could do this, since our natural light source is the sun, which also is the primary source of firebending.
as for the invisibility: i'm not that brilliant at physics, but theoretically, since we're able to see because all beams of light that hit all things around us are kinda redirected to our eyes where receptor cells transport the information carried by the ray of light to our brain, it would be enough to manipulate the rays of light so that they just don't hit the object that one wants to make invisible, right?! and as they don't hit the object in the first place, they also couldn't be redirected to the eyes = object turns invisible because our brain receives no information about it actually being there.

but i guess it would be highly complicated and exhausting, since there's an infinite number of rays of light, with new ones hitting the object every millisecond or so. making a small thing like a stone invisible would already strain the firebender's concentration a lot, and it would get more and more complicated the bigger the object that is meant to be made invisible is ...

gawwws sorry for the nerd-rant, i'm by no means even remotely good at science, i'm just really interested in the matter

looks awesome! FAVES!

Interesting proposition of bending, ou have created the closest thin to a quantum physics scientist in the Avatar world XD.

As a weapon light has indeed an effective use as stated by you character: to blind people... permanenetly . A sudden blast of light can cause severe damage to the retins (people staring at a nuclear explosion lost permanently the ability to see).

Now to most adventurous (and maybe boring) things . Light is composed by photons which act like particles and waves. Thabks to this light actually can "push" but in the every day's events the speed and low mass of the photons (theorethically they have no mass) don't pose a threath to any one (yet it's been discovered that light makes asteroids to spin faster).

Shadow generation sounds interesting, but if such effect could be accomplished it would not be because the light is being taken of the spot (as the natural light comes from the sun in every direction). Shadow is the abscence of light because of a solid object doesn't let the light pass behind it, hardly this effect would be achieved by a bender if he only bends "just the light".

Something different would be if the bender in question bends the properties of light. A bender manipulating the movement and energy of the photons can indeed "slow them" and decrease light intensity (though theorethically he would also make the light stop being light... but who cares XD).

Other way of "generating a shadow" would be to alter the way light beams reflect. For example, yo see your pc screen because light beams strike it and go driectly to you and your eyes; but if I can alter the direction of those beams and I make them don't go to your face you would see the screen go black because no beams from the object reach your eyes to generate an image (it's like a sun beam reflecting on a coin; if I point the coin in the right angle I'll blind you with the shining beam, but if I change the angle of the coin you can't see the shiny reflection).

The downside of this would be that those beams have to go somewhere and some random person around suddenly would see a screen that should not be there floating in the space XD.

Invisibility poses another challenge: invisibility can be achieved by two ways: the object let's the light pass through it completely or the object aborbs the light. The second one sounds like the most logic way for a bender to achieve invisibility, though it also poses a problem for the bender would be manipulating the properties of the OBJECT, not the properties of light itself.

Thinking for a second on a bender that can manipulate reflexive properties of the bodies is also interesting because it opens the door for a certain and effective way of disguising. The colors we see in every object indeed are only light reflected by them (therefore, colors don't exist by themselves, they are only the light waves the materials didn't absorb when light hit them).

With this in mind a bender of this kind could manipulate the reflection of ligh and alter the colors of skin, hair, clothes or certain more specific objects like the color of the eyes or jewlery.

Though you mention lightbending shares some of the roots of lightining bending, both sources of light are not the same. Lightining is electricity (formed by electrons moving from high to low zones of charge) while light is formed by protons which are the product of different reactions.

Electricity indeed carries energy and produces heath while light has energy, but doesn't produce heat of any kind (in the case of light bulbs and other bright things that burn the heath is produced by RADIATING energy like X-Rays, Gamma rays or UV rays, but not the light itself).

Sorry for the long speech, but I liked the proposition of light bending and I began to ponder its causes and possibilities . So far as mankind knows some would be the ones I mentioned, but I alsohave to say that light has not been fully understood nor explained.

Have a nice day .