So maybe I'm not that smart or someone has thought of this before, but here it goes.
The human eye can only see different spectrum of light, correct?
Well to make an invisibility suit, would we not be able to make the suit radiate different types of light so that the human eye would not see?
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I'm sorry, i meant so say a certain spectrum of light
In order to make an invisibility suit we just need to have a suit with a surface which which most likely have the same refractive index as clear water, that way it'll be like a transparent object and will therefore, will camouflage easily.
@vengeance921, wouldn't that bend light? Water bends light as it is. Therefore, you wouldn't be invisible because they would still be able to see you right?