Why are planes usually white? There are many reasons. First, this color can protect planes from sunlight. Also, white lets people see damage (损坏) on planes more easily. Third, white planes are easier to see at night or during bad weather. |
Blue masks are common in hospitals. In the earlier years, the masks were white. But it was found that the white masks would reflect light and make doctors' eyes painful. Besides, blue can make people feel less nervous and not afraid. Also, blue doesn't show dirt easily. |
Tires are all black. Why? Early car tires had a much lighter color. That's because they were made of natural rubber. Its color is off white. Later, people added carbon black to the tires. This makes tires look black. Michelin is a French tire company. It made colorful car tires in 1996. But the colorful tires would attract (吸引) drivers. This could cause car accidents. |
The color helps tigers catch their "‘meals". The eyes of some animals, like deer, are different from human eyes. Orange is bright to humans. But deer see the color as green. In the forest, they can't see these "green" tigers. So, it is easy for tigers to hide and catch them. |
①Damage can be found easily.
② White can protect planes from sunlight.
③White planes look clean.
④White planes can stand out during night.
