Because the lens has been focused depending on the available light. if you enter a darker room, your eyes have to re-adjust to allow more light through them.
You can, you just need a lighter (or something to light with) and a candle.
No. In a room with any number of mirrors of any size, when you switch off the light or blow out the candle, the room becomes just as dark as a room without mirrors.
Yes, black material absorb the most light. That's why you can't see much in a dark room; there isn't any light in a dark room, so everything appears black.
The only time a diamond would shine in the dark would be if in a dark room it was exposed to Ultraviolet Light which humans cannot see.Another AnswerBe aware that the only 'dark' where a gemstone diamond wouldn't shine is in a cave or in a closet with zero light.A cut and polished diamond is designed to capture whatever light is available and reflect and refract it back into your eyes. A diamond will sparkle under starlight, moonlight, candlelight and other low-light sources.
Not unless you have a definition of "completely dark" that means something other than completely dark (i.e. no light whatsoever).
yes they do there like humans when you just wake up and a bright light is on they need 2 ajusdt to it
Your pupil's have to adjust from the light to the dark so your pupils will get bigger in a dark room.
It may be possible if there is enough light in the room to see an outline of your reflection in the mirror. Or, your eyes may adjust to the dimness of the room and you may see a faint outline of your reflection in the mirror.
If there is no light you can not see. There is only blackness. This is quite disconcerting. If you put your hand in front of your eyes you can not see it. If the room is dark ie no light then you can not see.
== We often see color in a dark room because our eyes aren't yet adjusted to the darkness. Close your eyes for a minute or two to let them adjust and the colors should disappear.
cause your eyes have to adjust
This is a simple answer. Our eyes require the reflection of white light from an object in order to see it. If there is zero light in a room that is totally dark we can see nothing.
The pupil dialates to allow light to enter the eye and for you to be able to see. If there is no light at all then your eyes can not be used because you need light to see. If there is a little bit of light, close your eyes for 15 seconds so they can adjust to darkness.
Yes, you can see yourself in a mirror in a completely dark room if your eyes have adjusted to the light yet.
it is to help let as much light into your eyes as possible so you can see the best you can. this is why our pupils enlarge in the dark
There is a myth that eyestrain can result from watching TV in a dark room, because the eyes adjust to the darkness of the room by expanding the irises, to let in more light, and then the brightness of the TV is excessive. I have found no evidence that this is true. It is possible to get eyestrain from watching TV, only because your eyes remain fixed at the same focal distance for long periods of time, but this phenomenon has nothing to do with the brightness or darkness of the room or of the TV. Personally, I watch TV in a dark room and it does me no harm.
That means that basically you can not see if it is light or dark in a room. Or if it is night or day. You pretty much can not tell light and dark things apart.