What is the principle of the visual size of the object

When the human eye looks at an object, the difference in the distance of the object will cause the difference in the angle of view and feel the size of the image, when the object is farther away, the smaller the angle of view, and the smaller the image seen; The closer you get, the larger the viewing angle, the larger the image you see;

At the same distance, the visual size of the object is proportional to the size of the object's viewing angle. At different distances, the key factor affecting the visual size of an object is not the viewing angle.

(1) The human eye is equivalent to a camera, and the lens is equivalent to a convex lens, and the human eye can adjust the shape of the lens to change the focal length, so that it can see different objects from far and near

2) The image of the myopic eye is in front of the retina, and it should be equipped with divergent lenses, that is, glasses made of concave lenses; The image of the hyperopic eye is behind the retina and should be equipped with converging lenses, i.e. glasses made of convex lenses

So the answer is: lens; Concave; Convex

Hello, in order to expand the rearview field of view, the general rearview mirror is designed as a convex mirror, the field of view is wider, but the image of the object is smaller, which will cause the illusion of distance to varying degrees. At this time, the other rearview mirror is designed as a flat mirror or a mirror with a small convex arc, which can solve the illusion of distance, so it is normal to feel that the two rearview mirrors are inconsistent in use.

This is normal, the angle and range that need to be observed are different, and you can also adjust it yourself.

It's okay, this is normal, I felt this way before.

There are some blurry phenomena in viewing, which may be used for long-term ** electronic products, or myopia caused by staying up late. This situation is necessary to quit the habit of staying up late, can not use your eyes often, if it appears suddenly, you can use some eye drops to relieve. If the vision is blurred from far and near, if it occurs recently, it is necessary to go to the ophthalmology department of the hospital to check the fundus and refractive interstitium, rule out eye disease, and give corresponding **.

If you are like this since childhood, you may have amblyopia, and the younger the amblyopia training and ** age, the better the effect, and it is difficult to improve your vision after the age of 14.

This is blurred vision, or you can test whether it is astigmatism, if it is blurred, it should not be myopia.

Is it myopia that the eyes will be blurry when they see far and near? Go to your local hospital and see an ophthalmologist and ask him to check you out what exactly is causing it.

Guidance: Hello, considering eye fatigue, you can take oral vitamins A, B1, B12, inosine tablets, and topical lubrication, nutrition or anti-inflammatory eye drops. It is advisable to check the eyesight.

First of all, make sure that you are wearing it in the correct position the night before and that the lenses are not out of alignment.

Warcraft mappers should use dtm4 (I also use this), this device can only modify the map model, not your perspective on the hero's operation. You can try using the scroll wheel to adjust the angle of view of the operation. Sliding up should be tiled, and sliding down should be three-dimensional.

Hope it works for you.

You mean the same as Grand Theft Auto, right- you say you're a newbie... So I suggest you don't learn it yet, and no one has ever done this, but if anything, I've played a campaign, and it seems to feel a little bit like this, and it's pure keyboard control without using a mouse, and this thing is not a general difficulty, the key is to master each of the triggers first.

The mouse wheel is pulled to the maximum, and if you still feel that it is not enough, you can go down the plug-in. Play more, it's not poisonous.

Slide your mouse wheel forward all the way to the smallest possible time when you accidentally slipped on.

Mouse wheel scroll down and you're good to go.

Uh......A lot of people have passed it......