Interesting popular science tips _ What popular science tips are there?

In our daily life, we will find a lot of interesting popular science knowledge. What popular science knowledge do you know? What we know about popular science is the knowledge and words that explain various scientific phenomena and theories in easy-to-understand language. The following are interesting popular science tips compiled by Bian Xiao _ What are the popular science tips? Welcome to learn from them, I hope it will help you.

9 interesting popular science tips

1, a spoonful of neutron star material weighs 6 billion tons.

It is estimated that there are about10 billion neutron stars in our galaxy. The mass of these stars is about 1.3-2.5 times that of our sun. Neutron stars contain the densest known matter that can be directly observed. A spoonful of neutron star material weighs an exaggerated 6 billion tons, which is about the weight of Mount Everest. The pressure in the core of a star is so high that most charged particles, electrons and protons fuse together to form a star, which is mainly composed of uncharged particles called neutrons.

Chalk consists of trillions of tiny plankton fossils.

Chalk is made of lime slag, but what many people don't know is that lime slag is formed by the microscopic skeleton of plankton. In fact, tiny unicellular algae called coccidiosis have lived in the oceans of the earth for 200 million years. Unlike other marine plants, they are covered with calcite. Just 1 100 million years ago, a stone gathered on the seabed covered with a thick layer of white mud, and the conditions were just right. As more sediments accumulate at the top, pressure compresses chondrites to form rocks, forming chalk sediments. This stone is just one of many prehistoric species preserved in fossil form.

It takes 8 minutes 19 seconds for light to travel from the sun to the earth.

In space, the speed of light reaches 300,000 kilometers per second. Although this speed sounds amazing, it will take a lot of time to cross the odd kilometers between us and the sun. However, compared with the five and a half hours that sunlight takes to reach Pluto, the eight-minute time that sunlight takes to reach the Earth is actually very short.

Drinking too much coffee may make your breasts smaller.

An interesting study published in the British Journal of Cancer seems to be bad news for women who love coffee. This study investigated the daily coffee intake of more than 300 women and found that the breasts of women who drink three or more cups of coffee a day are smaller than those of women who don't drink three cups of coffee 17%. The researchers said that all this can be summed up as follows: too much caffeine will affect human hormones, thus affecting the size of women's breasts.

The average height of Indonesians is the shortest in the world.

According to the data collected by different sources in the British Telegraph in 20 17, although there are differences in height in any country or region, on average, the population height in Indonesia is the shortest in the world. The average height of adults is about 157cm. The average height is the highest in the Netherlands, with the average adult height 180cm.

The longest place name on the planet has 85 letters.

People living in MamungkukumpurangkuntjunyaHill, Australia need a lot of patience when learning to spell the name of their hometown. But in fact, it is not the worst, because the longest place in the world is located in New Zealand, and it has 85 letters: taumatawahakatangha-Koauotamateaturari Pukapimakimang-Ahoronukokupokai Whenuakitanatahu.

7. If all the spaces in human atoms are excluded, then all human beings can fit into the volume of cube sugar.

The atoms that make up us look solid, but in fact more than 99.99999% of the space is empty. An atom is composed of a small and dense nucleus and a large number of electrons around it, which are distributed in a wide area in proportion. This is because electrons are not only particles, but also behave like waves. Electrons can only exist where the peaks and valleys of these waves are correctly superimposed. Moreover, the position of each electron is not distributed in a point, but in a probability range. So they take up a lot of space.

Fleas accelerate faster than the space shuttle.

A jumping flea can reach a dizzying height of 8 cm in a millisecond, and its speed is even more than 20 times faster than that of the space shuttle. The reason why fleas have such magical power lies in an elastic rubber-like protein, which can store and release energy like a spring.

9. Giving birth to boys and girls depends more on men's genes.

Corey Gelatelli, a research scientist at Newcastle University in England, conducted a study involving 927 genealogies. According to the research results, male genes play a very important role in giving birth to boys and girls. The conclusion is that if a man's parents have more sons, he is more likely to have sons. On the contrary, if most of his parents are daughters, he is more likely to have daughters. This ability seems to be hereditary and seems to be related only to men.

8 interesting tips for popular science

1. The earliest green plant on the earth is cyanobacteria. Cyanobacteria include cyanobacteria, oscillatoria, Nostoc commune (such as Nostoc flagelliforme) and so on.

Trilobites are the first animals to rule the earth. They first appeared in CAMBRIAN about 600 million years ago and are a kind of arthropods.

The smallest bird in the world, Cuban hummingbird, weighs only about 2 grams. It is good at hovering among flowers for a long time, and sometimes it can fly backwards.

As we all know, Canada is called "Maple Leaf Kingdom". From the end of September every year, maple leaves have become a beautiful scenery. So what is the reason why maple leaves turn red? One is the role of anthocyanins, and the other is that chlorophyll is constantly decomposed due to cold weather and replaced by anthocyanins.

Swallow is one of the most flexible birds and a well-known beneficial bird. People often judge the weather by flying at low altitude. Do you know that?/You know what? Do you know that?/You know what? Swallows make pillows and mattresses with their wings.

6. After the rain in summer, we can often hear frogs. Do you know that?/You know what? Do you know that?/You know what? Frogs can close their ears. Frog's ear is the round eardrum behind the eyes.

7. Many people must have seen little squirrels. We found that squirrels are petite, but their tails are big. This tail ensures the balance of squirrels jumping from tree to tree. In winter, the tail can tightly surround the body of pine trees, which is practical and convenient.

As we all know, when people are very hungry, their stomachs will growl. This is because although the food they have eaten before has been digested, their stomachs continue to secrete gastric juice. At this time, the contraction and expansion of the stomach will stir up the liquefied gas in the stomach, so there will be a purr!

20 interesting scientific tips

1. The strongest muscle in the human body is the tongue.

It is impossible to sneeze with your eyes open.

It is impossible to hold your breath and commit suicide.

Every time you lick the stamp gum, it is equivalent to absorbing110 heat.

Right-handed people live nine years longer than left-handed people on average.

Crocodiles cannot stick out their tongues.

7. Polar bears are left-handed.

8. An ostrich's eyes are bigger than its head; Starfish haven't evolved their heads yet.

9. A flea can jump 350 times its own length, which is equivalent to a person jumping over an American football field.

10. A cockroach with its head cut off can live for 9 days, and the cause of death after 9 days is starvation.

1 1. Giraffes don't cough.

12. Owls are the only birds that can distinguish blue.

13. The whale's heartbeat is only 9 times per minute.

14. On average, an adult is 0.4_ higher in the morning than in the evening. Because the cartilage tissue of the spine is easily compressed during the day.

15. We have been drinking water for 300 million years.

16. Chocolate contains a chemical called phenyl. This is something that can be made in your mind when you are in love.

17. Only 30% people will enlarge and narrow their nostrils.

18. Among all languages, English contains the largest number of words, close to one million. German vocabulary is less than180,000 words, and French is even worse, less than 10,000 words.

19. The sex of an adult eel will change from male to female, and it will change several times in its life.

20. The draft blueprint of the Eiffel Tower covers an area of over14,000m2.