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When I placed a lamp next to a mirror where I can see "two lamps", does that double the light output? I know all the light that would have been wasted on the wall is now being returned so is it a yes? (lemmy.dbzer0.com)

submitted 8 months ago by Melatonin@lemmy.dbzer0.com to c/asklemmy@lemmy.ml

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[–] thedirtyknapkin@lemmy.world 12 points 8 months ago

You're just changing the direction of that light with a mirror. Picture a light bulb vs a light bulb in a flashlight with that reflector dish behind it.

Walls also do this, but to a lesser extent. If your concern is wasting light then get a lamp with a reflective directional shade. You know, like the Pixar lamp.