In the dark house, there is a plane mirror on the table. Behind the mirror is a white wall. When you shine a flashlight on the mirror and the wall, the wall is very bright because the wall has a very good effect on the light______ The mirror is dark because it makes the light shine______ ．

In the dark house, there is a plane mirror on the table. Behind the mirror is a white wall. When you shine a flashlight on the mirror and the wall, the wall is very bright because the wall has a very good effect on the light______ The mirror is dark because it makes the light shine______ ．

Because the mirror is smooth, what happens is specular reflection, and the reflected light is reflected back against the light of the flashlight; while the white wall is diffuse reflection, and the reflected light is reflected in all directions

In a rectangular room of a hotel, in order to make the guests feel spacious, the host installed a flat mirror as big as the wall on one side of the wall______ Principle to achieve this goal, so that people can feel the size of the room is the original______ Times

According to the characteristics of plane mirror imaging, the distance between the corresponding points of the image and the object and the plane mirror is equal, so that the distance between the image formed by the object in the mirror and the actual object in the room is twice that of the object. Because the owner has installed a plane mirror as large as the wall on one wall, it can make people feel that the size of the room is twice that of the original

Two planes intersect to form a plane angle,
Wrong. The plane angle is changed to the dihedral angle

The intersection of two planes is just a kind of positional relationship. What is a plane angle? Is it an angle under the plane concept? If it is, the angle under the plane is a figure composed of two rays starting from a vertex. If it is a dihedral angle in solid geometry, it should be a figure composed of two half planes starting from an edge, which is called a dihedral angle, This sentence is totally wrong. It's a mistake of donkey's lips not horse's mouth