Melatonin@lemmy.dbzer0.com to Asklemmy@lemmy.ml · 11 个月前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?message-squaremessage-square21fedilinkarrow-up159arrow-down17
arrow-up152arrow-down1message-squareWhen 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?Melatonin@lemmy.dbzer0.com to Asklemmy@lemmy.ml · 11 个月前message-square21fedilink
minus-squarehperrin@lemmy.worldlinkfedilinkarrow-up28·11 个月前A mirror and a perfectly white wall both reflect (nearly) all the light that hits them, the only difference is in which direction they reflect it. White walls will scatter the light that hits them.
A mirror and a perfectly white wall both reflect (nearly) all the light that hits them, the only difference is in which direction they reflect it. White walls will scatter the light that hits them.