Is the car film effective in rainy days?

It didn't work. Rainy days are the best time to show movies. The rainy days of the Spring Festival make many new car owners not in a hurry to film. But you know, cloudy days are the best time to shoot. In rainy weather, the suspended matter in the air is reduced, and at this time, the film avoids the impurities between the film and the glass from affecting the appearance.

principle of operation

Aluminum, gold, copper, silver and other metals are made into multi-layer to dense high thermal insulation metal films by vacuum spraying or magnetron sputtering technology.

In general, shell electrons (free electrons) in metallic materials are not bound by nuclei. When they are irradiated by light waves, the electric field of light waves makes free electrons absorb the energy of light, produce oscillation with the same frequency as light, and then release light with the same frequency as the original light. This phenomenon is called light reflection.

References:

Baidu encyclopedia-car window film