25 false scientific facts that we still believe in ancient times (1)

Before science could prove that the Earth was orbiting the Sun, many people believed that the Earth was the center of the universe. Not only that, there are many false facts that we still believe in before we prove it.

>>>The scientific truth about misconceptions everyone believes

Here are the scientific facts that not everyone knows:

1. Lightning does not hit twice in the same place

The truth is not so, because lightning always finds the shortest path to the ground. Therefore high objects such as trees and tall buildings are the most vulnerable to lightning strikes and of course not only once.

2. Tongue has different sensing areas

In fact, our tongue does not have separate regions to feel each different. As people are still rumored to have a tongue of bitter taste; two edges of the tongue: sour taste; tip of the tongue: sweet and salty. In fact, all areas of our tongue can sense different tastes.

3. A coin falling from the top of the Empire State building can be deadly

There is a legend that a man dropped a coin from the Empire State building's top floor and killed a pedestrian below. But this is only fictional, a coin falling from the Empire State Building has a maximum speed of 80km / h and cannot have the same damage as a bullet.

4. In the vacuum environment your eyes will explode

There are no parts of the human body that explode in a vacuum due to pressure or any reason, but we will die in a few minutes due to lack of oxygen.

5. Blood in the vein is green

Blood in the vein that lacks oxygen back to the heart is not as blue as we see it through the skin. Actually it is dark red. We see blue veins because of the scattered light when shining through the skin.

6. The tip of the finger is wrinkled when soaked in water

When we swim or soak in water for a long time, the fingertips are often wrinkled. This is not because our fingers suck water but the blood vessels shrink and cause the fingertips to constrict. However, the reason why blood vessels are shrinking has not been understood, may be the adaptation of our ancestors to live in humid environments.

7. Sunflower toward the Sun.

In fact, it is not only sunflowers that face the Sun, but all the flowers are directed toward the sunlight to be better photosynthesis.

8. Gum takes 7 years to digest in the stomach

If you miss chewing gum, you are often threatened by adults that chewing gum will stick to your intestines and take up to 7 years to digest. However, the gum is just as hard to digest as the insoluble fiber, and it will pass through your digestive system like any other food, the residue without nutrients will be released. Out through stool.

9. Goldfish has 5 seconds of memory

You often use goldfish memory to refer to forgetful people. Although the goldfish's brain does not grow and does not have a good memory, it is not bad enough to remember only a few seconds. In fact, goldfish can remember a few months.

10. Bats can't see

Bats do not use sight to fly and feed, they use sound waves. Therefore, their vision also deteriorates but not to the point of being blind. In fact, some large bat species also use sight to feed at night.

11. Bulls are crazy when they see red

Gaur does not have the ability to distinguish colors, so the red in their eyes is only gray. They were angry at the gladiator with a red cloth because the cloth was brought back and forth in front of them.

12. The meteorite collided with the Earth causing the dinosaurs to become extinct

Not all dinosaurs on Earth die because of a meteorite collision with the Earth in the Cretaceous period. But scientists have found fossils of small dinosaurs, suggesting that they still survived the previous meteorite impact.

13. Drinking alcohol is warmer

People who live in cold lands often have a habit of drinking alcohol to help the body get warmer. But in fact only the temperature on your face increases, while your body temperature drops. Because the blood vessels expand, the body's temperature is more likely to escape.