Learn knowledge.

The son is lying on the sofa reading pictorial, and the mother.

Walk slowly into the house and say, "I bought a car full of coal." Now the car is parked on the bridge and can't be pulled up Come and help mom push! " ""Well, Mom, you don't understand science, "said the son, tilting his head and motionless." According to Newton's law of inertia, all you have to do is to back the car 20 meters, then rush up and the car can cross the bridge. "

There are snails.

Every time I talk about it: when an alternating magnetic field passes through a metal section, there will be

Production. Students always laugh. We should be glad that they have such imagination. So imagine with them: when an alternating magnetic field passes through the metal section, there will be "countless snails around" in the metal section.

Weeks crawling ",but we must find out the reason of" snail crawling ":

The basket is on fire.

Three professors (one physicist and one)

first

) called to the dean's office, they just sat down and found one.

The basket is on fire.

The physicist said, "I know what to do. If the temperature of the material drops below the flammable temperature, the fire will naturally go out. "

I don't agree. "No, you must first cut off the oxygen supply. Without reactants, the fire will go out. "

Just as physicists and

When arguing endlessly, they were surprised to find that

The house ran around, lighting up one by one.

Basket.

"What are you doing? ! "

The economist replied, "I need enough samples!" " ! "

A physicist's paradise

Once, all the scientists in the sky played together.

. Unfortunately, when Einstein looked for someone. All the scientists hid, except Newton. Newton just drew a square with a side length of 1 m in front of Einstein and stood in the middle and saw it. When Einstein finished counting, he saw Newton and immediately shouted: Newton is out! Newton refused to admit it. As a result, other scientists came out to help Newton prove that Newton was not out. What's going on here? At this time, Newton

Frankly speaking, I am standing in the middle of a square of 1 square meter, that is, I am Newton per square meter, so I am.

Inertia example

The physics teacher is talking about inertia, and a student is whispering below. The teacher gave him a hint, but he still didn't answer.

Teacher: What did I just say?

Student: Inertia

Teacher: Please give an example.

Student: I was just talking below. In spite of your hints, I can't stop at once. This is inertia.

Unit of

In a physics class, the teacher is talking.

. Xiao Ming slept soundly, but the teacher asked questions. "

What is the unit of? "Xiao Ming stood up and replied back and forth:" The electrician's unit is in

Dad said, "Everything expands with heat and contracts with cold. This is a certain truth. " His son jumped up and said, "Yo!

So yesterday, I burned my hand and got a blister. "

The car broke down.

Several engineers drove out for a trip and the car broke down on the way.

The teacher said that you should check whether the fuel is exhausted, or

Blockage.

Said, need to test whether the battery is dead or there is something wrong with the line.

Say, it is estimated that the engine is still faulty. Finally, everyone turned to the computer engineer who had been silent: "What do you think?" The computer engineer replied, "Maybe we should all get off and get on the bus?"

The value of experiment

British chemist and physicist who invented the world's first generator.

(1791-1867) He has a persistent pursuit of knowledge. For a scientific research, he often

, which makes those

It's puzzling.

Once, an acquaintance of his, gladstone Si Tong, a tax official, saw it.

After doing an experiment of no practical value to him, he asked, "Even if it is successful, what's the use of spending so much effort?"

Answer: "well, taxes can be collected soon."

black sheep

On the train in Scotland, there are

Physicists and mathematicians are together. The train ran quickly and the scenery passed by the window. Suddenly, they saw a sheep, a black sheep.

Say: Wow, all sheep in Scotland are black!

The physicist said: No, it should be said that there is a sheep in Scotland that is black.

The mathematician said: Wrong! It should be said that in Scotland, there is a sheep whose side facing the train is black!

A one-sentence speech

American plane

, are a pair of brothers who are good at thinking and studying hard, but they are the least sociable.

What they hate most is speech. Once in a certain place

Go ahead,

The host invited big Wright to give a speech.

"This must be a mistake?" Big Wright said awkwardly, "It is my brother's responsibility to make a speech." The host turned to Little Wright. So Wright-Phillips stood up and said, "Thank you, my brother just gave a speech."

Pushing around like this, people will not let go of the two brothers. After repeated invitations from people from all walks of life, Little Wright only said this sentence: "As far as I know, only parrots can talk among birds, and parrots can't fly high."

The speech of this sentence won people's warm applause for a long time.