Comment on I'm going insane
unexposedhazard@discuss.tchncs.de 1 day agoDepends on the size of the mirror and how far it is off the ground. If its a full sized 2m tall mirror then the min distance is obviously zero. If its a small bathroom sink mirror that doesnt go down to the floor then there is no distance far enough and being close is actually better.
Tar_alcaran@sh.itjust.works 1 day ago
Uhhh no, that’s not how angles work.
The further you get away from a mirror, the “further away” the reflection is. You will never see your whole body in a hand mirror, even if you put it on the moon.
candybrie@lemmy.world 1 day ago
The reflection being further is the point? The further away something is, the smaller it looks, so the less of your field of view it takes up, the more you can see of it.
If I put my hand on my eye, I can’t see much of it. If I pull my hand back, I can see more of it. If I put a mirror on my eye, I can only see my eye. If I put it back, I can see my face because the reflection of my face is further (i.e. smaller).
I’m very confused what you’re trying to say.
Tar_alcaran@sh.itjust.works 1 day ago
Ok, visualize it like this:
Draw yourself, with a small mirror at head height, a meter away. Draw your reflection at the same distance from the mirror on the other side.
Now do that again, but place the mirror 10 times further. Then draw lines from your eye, to the edge of the mirror, and to the reflection.
You’ll reach the same point on your reflection.
candybrie@lemmy.world 15 hours ago
Ok, I can see the point, but it’s not usually what people mean when they can see their whole body. In that example, you’re looking down or looking up. It’s not the whole body entirely in your field of view. For your whole body to be entirely in your field of view, it absolutely does matter how close or far you are from the mirror.