Traditional Culture Encyclopedia - Weather inquiry - A train in foggy weather

A train in foggy weather

Sound travels much faster in iron than in air by 260 and 940 100 meters. Basically, athletes who are near the place where the gunshots are heard spend the least time, and it seems that at the beginning, everyone takes turns watching TV, often seeing the video first and then hearing the sound. This phenomenon is extremely obvious. Blind people used to cross the road easily by themselves, but now they need someone to take them with them, just listening to Sirius' bang.