Why can I see the things in the house clearly from the window at night?

At night, when it gets dark, the lights are lit in the house, and it is brighter than the outside, and when you look out the window into the house, you can see the contents of the house clearly. If you look out from the house, you can't see anything clearly outside because it's dark.

This phenomenon has to do with contrast. At night, it is dark outside, but the room is bright, so what enters the human eye is mainly the light emitted by the objects in the room, so you can see the things in the room clearly. If you want to see anything in the room during the day, you need to keep your eyes against the glass and cover the light from the outside with your hands.

Because the light source is in the house, after some of the reflection of the furniture, the light can easily be folded out of the window and reach the eyes of the observer, and the observer can see the furniture clearly.

During the day, the light source is outside the house, so although the inside of the house is brighter than when the lights are turned on at night, the proportion of light that turns back to the window after being reflected several times in the room happens to be very small, so it is very dark from the window.

The house is lit up and it's dark outside, it's dark outside and it's dark inside the house, and when the power goes out, it's dark inside and outside the house.

Because the lights are on in the house, it's brighter than the moonlight outside.

The light inside the house is stronger than outside.

There is light in the house, and of course you can see it.

The premise is that there is light in the window.

There was light in the house. Shine.

So it looks pretty clear.

I haven't tried.

I don't know.

The eye can see clearly where there is light.

I can't see it in the dark.

During the day, the strong sunlight illuminates the outside, and the light in the house is much darker than outside. When our eyes are exposed to bright light in an outdoor canopy, their pupils automatically shrink to reduce the amount of light entering the eyes. In addition, the glass on the windows of the car reflects the sunlight, so we can't see the things in the house clearly.

Hello, in this case, the brightness of the interior is better than the outdoor, so that you can see the indoor things clearly, if the indoor brightness is lower than the outdoor, then from the outside, it is absolutely impossible to see the indoor things.

The light on the outside is weaker than on the inside, so of course I can see it clearly

The contrast between light and dark is strong, and it's simple.

During the day, the strong sunlight illuminates the room, and the light inside the room is much darker than outside. When our eyes are exposed to bright light outdoors, their pupils automatically shrink to reduce the amount of light entering the eyes. Coupled with the fact that the glass on the windows reflects sunlight, we are even more indistinguishable from what is in the house.

The human eye has a strong ability to adapt automatically, regardless of whether the tube is well-lit at noon or at night, after adaptation for a period of time, the ability to observe can be improved, because the pupil will dilate and shrink to change the amount of light entering the eye. At noon, the outside light is sufficient, and the pupils will be closed to a very small one, so that the light will enter the less smile Zen, not too dazzling, and at night it will be enlarged, increasing the amount of light entering the light to make you feel not so dark... This explains the fact that when you enter the tunnel from the wilderness you feel dark, but after a few seconds you can see clearly inside the tunnel or come out of the roof and feel very bright but after a while you don't feel like you are in a daze...

Because of this phenomenon, your eyes adjust to the intensity of light outside the house during the day, and the light inside the house that is not very strong enters your closed pupils less, and the room with the lights on at night will be much brighter than the dark place outside, so you can see.

Well, it should be because of the light outside.

Of course, it's because you can see the two clearly.

When the eye sees something, it needs the light "emitted" by that thing to enter the human eye, and then project it on the retina, and form vision in the cerebral cortex through the guidance of the optic nerve.

That is, if something doesn't emit any light, then we can't see it. But in daily life, many things like tables and chairs will not shine on their own, we still see them, this is because they will reflect the light of the sun, the light is like countless small balls, bounce on the table and chair, and back, inevitably there will be many small balls bounce into our eyes, and this is how the light enters the eyes of people.

But when there is a power outage, the table can't **light into our eyes, so we can't see the table when the power outage is dark.

At night, when it is dark outside, the house is bright, and the light received by the eyes mainly comes from the bright room, so it is natural to see the things in the house clearly.