Ha ha mirror is a kind of scattered image, which is the irregular reflection and focusing of light through curved mirror. The mirror surface of the mirror is distorted to varying degrees, and the reflected image will be different. Some common image effects are tall, short, fat and thin.
Hahaha mirror principle
Ha ha mirror is caused by different convex and concave parts of the mirror surface, so some images are enlarged and some images are reduced. For example, if you look at a ha ha mirror with a concave mirror on the top, your head will be enlarged, and the image of your nose will be enlarged more than any other part of your face because it protrudes from your face and is closer to the mirror, resulting in a larger nose.