As we all know, clocks have many shapes, such as circle, square, triangle and so on. Because there are too many forms of clocks and watches, I will give you some knowledge about clocks and watches now.
In ancient times, people didn't know the present time, so the ancients invented the world's first clock-sundial.
The diameter of the sundial is about 0. 7~0。 8 meters, supported by a shelf at the bottom, and the plane of the clock is inclined to the south by about 60 degrees. If you look closely, you will find that the clock depicts 12 hour and the zodiac, and one hour equals two hours. The source is also a long story. When the ancients didn't have a timer, the wise ancients didn't stop there, but invented the sundial. These two words are also particularly profound. The sun means the sun, and the sun means timing according to the sun. The sundial is mainly a needle in the middle, which shines the reflected light on time. This is a sundial.
When Galileo came to the west, he found this problem because of the swinging law of the chandelier in the church. Later, according to the problems discovered by Galileo, someone invented the western clock-pendulum clock.
Pendulum clock is mainly divided into clock face, pendulum rope and pendulum. Its body length is about 1. 5 meters, about 0 wide. 7~0。 8 meters, this clock is very similar to Big Ben in London. Although it keeps swinging, there are all kinds of parts inside, all of which are gears. Its main operation mode is that when the pendulum swings back and forth (one back and forth is equal to one second), it will swing the gear, and the gear will drive the gear … and then the second hand on the clock will move!
Not only that, there are many kinds of clocks: underwater, standard, mechanical clock and electronic clock ... They all operate in the same way. I believe there will be new members in the family in the future.
The clock will have new members again and again. I believe that wisdom is broad. As long as we study hard, the Zhong family will have new members.
In the first volume of the fifth grade, the composition introduced one thing. In ancient Greece, mantis was called mantis. Because people often see it semi-upright, standing on the grass, its front legs reaching into the sky like arms, as if praying.
In fact, this is all wet! Those hands are actually a sharp knife.
When praying, if some jumping insects suddenly pass by it, it will inevitably show its murder. Its body suddenly spread out, grabbed two sharp knives and pounced on them. After being caught by a sharp knife, he couldn't move and could only be eaten by mantis.
There are many kinds of mantis, such as China mantis, orchid mantis and yellow mantis ... Now let's talk about mantis. Its body is very big, and its color is brown or tender green. As long as you lie on a green branch, it is easy to hide and blend in with the feeling of the branch. Not only can you avoid natural enemies, but you can also suddenly attack and attack prey. They generally feed on mosquitoes, flies and cicadas.
Children, have you ever seen cartoons? Mother mantis ate her husband on her wedding day. Do you know why? This is because by eating the male mantis, the female mantis can ovulate more eggs, and the sacrifice of the male mantis can also provide more nutrition for her offspring and ensure fertility. The baby is healthier. It turns out that father mantis is so great!
Mantis has no nest, but it can make its own nest. Their nests can be seen everywhere in the sun. Mother mantis first finds a foundation, then discharges some yellow liquid on it, then lays some eggs on it, and covers the eggs with a layer of yellow liquid. Although the appearance is hard, the baby can easily break out of its shell. After all this, mother mantis will leave and never come back to see how her children are.
Although mantis is very powerful, unattended babies are often besieged by ants or taken away by birds as soon as they come out.
Introduction of a Thing Description of a Thing 3 Sushi is a traditional Japanese food, and there are sushi shops in China. I fell in love with sushi when I took the first bite.
Prepare 10- 15 cm of seaweed (seaweed for sushi) and sushi tools first. Look at that tool, it seems to be the previous bamboo book, as well as cooked rice, vinegar, sugar, salt, your favorite seafood or other delicious snacks (cucumbers, etc. ) and you can start cooking.
In the first step, we spread the bamboo book, and then put the prepared seaweed on it. Remember, be sure to put the seaweed in the middle, and then look at the edge of the seaweed yourself, two to three centimeters away from the tool.
Step 2, pickle rice with vinegar, sugar and salt. There is no need to prepare too much rice, about 200 grams, and then put the sweet and sour salt in the proportion of 1: 1: 1 and marinate it for later use.
Step 3, cut a "soul" cucumber, as long as the seaweed grows, and then cut a soul ham, which is exactly the same size as cucumber.
Step 4, put the pickled rice into a mold, spread a layer of oil-absorbing paper on it, flatten it with a rolling pin, then add cucumber and ham, roll it up with a tool and fix it with a rubber band for two minutes.
Finally, open the mold and cut it according to the width of 1.5-2 cm, and a perfect sushi will be made.
Put it in your mouth, it's soft and sweet. It's crunchy just after a bite, and then the full pearl rice pops out. It's delicious. Please try it quickly!