Definately from the side.

I think most lights do and I read somewhere, but cannot for the fuck of me remember where, but when I researched light, indeed up to 30% more light is provided in horizontal positions.

That is to say, the light is emitted stronger when the element is in parallel position to the lighting surface.

I just have been lazy and placed those on the end beause I'm a loser and a stoner.

Next grow I hang them and paint my fan white.

I have been a schmuck about those two things.