1. total reflection: Also known as total internal reflection, it refers to the phenomenon that light is totally reflected back to the original medium when it hits the interface of light sparse medium (that is, light with high refractive index in the medium).

2. The installation angle of the front window of the car depends on how to avoid the virtual image of the scenery inside the car on the front window glass. Yellow is selected for automobile fog lamps because of its strong penetrating power.

3. The deceleration glass is actually a laminated automobile windshield, which is made of two layers of tempered glass with a layer of PVB film in the middle. When the glass is damaged by external force, the glass fragments will still stick to the film and will not fly out, causing secondary damage to the passengers in the car. High-quality deceleration glass has good optical properties, good transmittance and no optical distortion. , and can truly reflect the shape and running state of the external scenery.

Vision is very clear, just like the visual effect without glasses. In addition, the sandwich technology also has certain heat insulation and soft light effect, which makes people feel more comfortable. In fact, the correct name of glass used in vehicles (including cars, trains, planes, etc.). ) is safety glass.

Eclipse, also called solar eclipse, refers to the moon moving between the sun and the earth. If the three are in a straight line, the moon will block the light from the sun to the earth, and the shadow behind the moon will just fall on the earth. At this time, the eclipse happened.

Eclipse is a special astronomical phenomenon, which means that when the moon moves to the shadow part of the earth, the area between the moon and the earth will see that the moon is gone, because the sunlight is blocked by the earth. At this time, the sun, the earth and the moon are exactly (or almost) on the same straight line. Eclipses can be divided into three types: partial eclipse, total eclipse and penumbral eclipse. A solar eclipse can only occur around the fifteenth day of the lunar calendar.

6. Mirage, referred to as mirage for short, is a natural phenomenon formed by refraction and total reflection of light, and is a virtual image formed by refraction of light reflected by objects on the earth through the atmosphere.

7. The remote controller uses infrared rays for remote control, and uses near-infrared rays with wavelengths between 0,76-1and 5μm to emit control signals.