What are the common scientific phenomena in life?

1. Science related to electricity in our lives: TV sets, mobile phones, computers that most people already own, point reading machines for students, learning computers, etc. , is a high-tech product made by comprehensive use of various science and technology; The telephone widely used in life is the earliest product made of sound wave knowledge, and the electric lamp used by every household is made of electricity through the principle of resistance heating; Chargers for handheld computers and entertainment tools such as mobile phones are made by using the principle of electric energy conversion; Cars, trains, airplanes and other means of transportation are all made by various scientific technologies, and electric vehicles are made by using the principle of converting electrical energy into mechanical energy. Wait a minute.

2. Science related to light in our life: for example, making mirrors by using the scientific principle of plane mirror imaging and making submarine periscope by using the scientific principle of light refraction; Convex and concave lenses are made by using the scientific principle of light refraction; The observation mirror of the tank is made by using the scientific principle of light refraction. Wait a minute.

3. The scientific knowledge commonly used in people's life in China from ancient times to the present: explosive explosion, bullets and shells are all made by using the scientific knowledge of gas expanding when heated. People use the knowledge of chemical science to burn stones into lime and build walls with lime and water. Drawing a stadium requires knowledge of circles and quadrangles (including equilateral quadrangles and rectangles) and right triangles.