Interesting phenomena in life, what are the interesting phenomena in life

Thin pieces of paper falling from a high place, even if there is no wind, the path of the paper falling is tortuous and changeable. This is due to the different convex and concave parts of the paper piece, the shape is different, so in the falling process, the air flow velocity of various places on its surface is different, according to the principle of fluid mechanics, the flow rate is large, the pressure is small, resulting in the uneven air force everywhere on the paper, and changes with the change of the movement of the paper, so the paper is constantly tumbling and twisting.

1. Quartz clock hanging on the wallWhen the battery runs out of energy and stops moving, its second hand tends to stop at the "9" position on the dial. This is due to the fact that the second hand is most hindered by the gravitational moment at the "9" position.

2. Sometimes when the water pipe is discharged from the adjacent faucet, with occasional bursts of noise. This is due to the resonance of the water pipes caused by the water flushing out of the faucet.

3. Take a picture of the TV screen, the camera flash and indoor lights should be turned off, so that the ** picture is clearer. Because the reflected light from the flash and lighting on the TV screen can interfere with the transmitted light of the TV picture.

4. Frozen pork thaws faster in water than in air at the same temperature。Scalding nails cool down faster in water than in air of the same temperature. A cup filled with piping hot boiling water cools down faster when immersed in water than in air at the same temperature.

All these phenomena show that water has better heat transfer than air.

5. When the pot is filled with cold waterWater droplets attached to the outer surface of the bottom of the pot take a longer time to be boiled dry on the flameAnd it does not boil until it is boiled, this is because the water droplets, the pot and the water in the pot maintain heat conduction, and the temperature is about the same, as long as the water in the pot is not boiling, the water droplets will not boil, and the water droplets are gradually burned dry by evaporation on the flame.

Physics, ice turning into water, thermal expansion and contraction, etc.

4 interesting physical phenomena in life that you can do at home.

There are many interesting phenomena in life that can be discovered if you look closely.

One day, I was playing downstairs in the community, the kitten was at home, upstairs I don't know who threw the paper down, my kitten was very curious, so I went to grab the paper, and accidentally planted it. Fell from my window. I hurried over to see if the cat had fallen to its death, and found that it was not dead.

Later, I heard my mother say, "The kitten's tail has a balancing effect, like a parachute." ”

Another time, I accidentally dropped the chopsticks into the water, and then I found that the chopsticks seemed to be broken, and I quickly took out the chopsticks to find that they were still intact, why is this?

After checking the data, it was learned that light travels in a straight line, which is a refractive phenomenon.

One day, I went to the night zoo and I found owls sleeping with one eye closed and the other open. I asked my mom curiously, and she said, "I don't know either." So, I went to the top and finally found the answer, it turned out that it was afraid that someone was going to attack it.

Through these three things, I found that nature is interesting, it can make you happy, let's go into nature together!

Essay writing methods.

1. Determine the center and write the deep meaning. We should focus on digging out the life philosophy contained in the event we are writing about or find out where it shines, and think about it repeatedly to determine the central idea of the article. That is, he is good at writing deep meaning from ordinary small things.

2. The six elements of the article should be explained clearly. The occurrence of an event is inseparable from the six aspects of time, place, person, cause, process and result of the event, that is, the "six elements" that are often said.

3. Be orderly and clear. Arrange the materials in a reasonable order according to the stated time. There are three types of general narratives: narratives, flashbacks, and interludes.