What is a cat's eye?

Question 1: What is the cat's eye on the door? Also called door mirror convex lens.

Question 2: What is the scientific name of the cat's eye on the security door? Peephole! Peephole! ! !

Question 3: What is cat's eye agate? It should be just agate with cat's eye effect. Academics call the golden emerald with cat's eye effect cat's eye. Generally speaking, cat's eye refers to gold-green cat's eye gemstones, while other gemstones with cat's eye effect must be preceded by the word "cat's eye", such as aquamarine cat's eye and tourmaline cat's eye.

Question 4: What is the use of cat's eyes? There is a "reflector" in the cat's eye, and a film behind the retina reflects light, which is why its eyes look so bright. There are only two types of cones in cats: green and blue. Cat's eye, also known as opal and oriental cat's eye, is a rare and precious variety in jewelry. It belongs to orthorhombic system. Crystal morphology is often short columnar or plate-shaped. Opal has many colors, such as honey yellow, brownish yellow, wine yellow, brownish yellow, yellowish green, yellowish brown, grayish green and so on, among which honey yellow is the most precious. Cat's eye, also known as door mirror, is a small optical instrument installed on the door of residential buildings, which is convenient for residents to observe outdoor conditions. Cat's eye is also the name of the movie.

Question 5: What is a cat's eye movie? Cat's eye movie is a software APP.

Question 6: What is the cat's eye on the door? Also called door mirror convex lens.

Question 7: What does cat's eye mean? Cat's eye, also known as door mirror, is a small optical instrument installed on the door of a house. Convenient for residents to observe outdoor conditions is a necessity for home safety.

Question 8: What does cat's eye mean? For example, the cat's eye looks at people's cat's eyes, and there are facilities in the doors of every residential building.

I remember a saying: look at people under the door, look at people under the door. This is the cat's eye, but looking at people through the cat's eye should not be true, so we can't judge people from their true side. Think about it, isn't the principle of cat's eye the principle of convex lens? Indeed, from the cat's eye glass, the other side is getting smaller.