## Linear density of light?

I know light is not supposed to have a mass, but technically by E=mc2, it technically should, right? Assuming that, using the approximate ratio of distance covered to sine graph length, I found the linear density of light based off of Intensity and distance from the source. Is this valid at all, or invalid due to my first assumption that light technically has mass?
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 Quote by roccoa3 I know light is not supposed to have a mass, but technically by E=mc2, it technically should, right? Assuming that, using the approximate ratio of distance covered to sine graph length, I found the linear density of light based off of Intensity and distance from the source. Is this valid at all, or invalid due to my first assumption that light technically has mass?