17 interesting science facts schools don’t teach you

1. You can lose about 0.5 kg per day just by… farting

Scientists estimate that the total mass of a fart is 0 0371 grams and 1 The average person will fart about 14 times a day.

2. Infrared cameras cannot detect polar bears

This animal They are perfectly kept warm thanks to the thick layer of fat under their skin and the fur that covers their body, but their top layer of fur keeps the temperature the same as the outer layer of snow, which is why they are invisible to the naked eye. Infrared cameras – are cameras that detect heat lost by a living organism.

3. Sunflowers can clean up radioactive waste

Some radioactive isotopes are similar to the nutrients that sunflowers need, so when they mature they will absorb radiation from the soil.

4. A flea can accelerate faster than a space shuttle

When jumping it can reach a dizzying height of 8cm in a millisecond 50 times faster than accelerating of the spacecraft.

5. Acid in the stomach can dissolve razor blades

Within 24 hours, if the blade is swallowed in the stomach, it will become brittle due to highly corrosive acid with a pH as low as 2 -3.

6. Babies have about 64 more bones in their bodies than adults

Babies have about 270 bones in their bodies, making their skeletons more flexible . With age, many of these bones fuse together, leaving 206 bones which is the average number of bones for an adult.

7. It’s impossible to burp in space

When you burp on Earth gravity keeps the solids and liquids from the food you just ate down so only gas comes out of your mouth. Friend. In a zero gravity environment, gas cannot separate from liquids and solids, so you cannot burp without vomiting all the food out.

8. Animals also… dream

According to some studies, rats have dreams about food or running through mazes. Most mammals also experience REM sleep which is the sleep in which dreams occur.

9. Scorpions glow under UV light

Scorpions’ soft blue-green glow comes from a substance found in the epidermis – a very hard covering in part of the skin. their exoskeleton. However, scientists still do not know the purpose of scorpions’ glow. They think this helps scorpions find each other, protect them from sunlight or detect prey more easily.

10. The human body has two parts that continuously grow

Our nose and ears continue to increase in size even when the body’s growth has stopped.< /p>

11. It may rain diamonds on some planets

The atmosphere on Neptune Uranus Jupiter and Saturn have such high pressure that they can crystallize elements carbon atoms and turn them into diamonds.

12. 99 99999999% of an atom’s volume is empty space

An atom consists of a small nucleus surrounded by a cloud of electrons spread over a correspondingly large area. So if you removed space from all the atoms of all 7 billion people on earth, these atoms would be packed into just the size of a sugar cube.

13. Hot water freezes faster than cold water

The Mpemba effect assumes that the velocities of hot water particles have a specific arrangement that allows them to freeze more easily.< /p>

14. Human blood is similar to sea water

Our blood composition has approximately the same salt content as sea water. This fact further proves the assumption that life comes from the ocean

15. Bananas are radioactive

Bananas contain potassium, which makes them slightly radioactive. But don’t worry you will only die of radiation poisoning if you eat about 10,000,000 bananas at once.

16. The length of human DNA is 17 times the distance from the sun to Pluto and back

The human body contains about 37 trillion cells with 23 DNA molecules enclosed inside each cell. So if you uncoiled human cells and stretched them out, you could have a string 54 7 billion kilometers long.

17. A day on Venus is longer than a year

In the movie “Journey to the West”, a day in Heaven is equal to a year on Earth. But in reality it takes about 243 Earth days for Venus to rotate on its axis once while it only takes 225 days to orbit the Sun.