Explain some phenomena in our daily life with scientific principles.

Explain some phenomena in our daily life with scientific principles: light scattering and refraction of tiny water droplets;

Candle wick, wick: capillary action of liquid;

Cement hardening: mineral crystallization;

Frozen cracked water pipes in winter: water freezes and expands in volume.

What are the phenomena in daily life scientifically explained? (1) Wear glasses. From cold outdoor to warm indoor, the glasses will be covered with white fog, which is the liquefaction of gas.

(2) When the water boils, the cover will be pushed upward, and the gas will do work on the cover.

(3) When sitting in a fast-moving car, you will feel thrown outward when turning, which is centrifugal phenomenon.

(4) One corner of the coal pile will turn black for a long time, which is the diffusion phenomenon of solid molecules.

(5) Drilling wood can make a fire, that is, doing work to change internal energy.

(6) You will feel warm if you lean against the heater. This is heat transfer.

(7) The working principle of nail clippers, scissors and tweezers is lever.

(8) There is a sense of weightlessness when taking a pirate ship.

(9) When the incandescent lamp is permanent, there will be a layer of black on the bulb wall, which is the sublimation of tungsten wire.

(10) In daily life, people often encounter this phenomenon: when they take off their clothes and sleep at night, they often hear crackling sounds in the dark, accompanied by blue light. They met and shook hands, and as soon as their fingers touched, they suddenly felt the sting of their fingertips; When you get up in the morning to comb your hair, it tends to "float". The more you manage, the more chaotic it is. When you pull the door handle and turn on the tap, you will get an electric shock, and you will often make a "bang, bang" sound. This is static electricity generated in the human body.

Interpretation of scientific phenomena in daily life 1, salt water will encounter ice only at MINUS 20-50 degrees, and the more salt, the lower the temperature.

Vinegar freezes at about MINUS 20 degrees.

The density of soup is higher than that of water, not because of oil.

3. Adding a small amount of dilute hydrochloric acid or sodium hydroxide solution to water can make the water more conductive.

4. Add a few drops of cooking oil to a small amount of white vinegar, shake well and let it stand for a while, and floc will appear; If a small amount of detergent is added dropwise, foam will appear when shaking. If you don't shake it, it will float on the vinegar surface

Explain the scientific phenomenon in daily life 15 (1) Wearing glasses, from cold outdoor to warm indoor, glasses will be covered with white fog, which is the liquefaction of gas.

(2) When the water boils, the cover will be pushed upward, and the gas will do work on the cover.

(3) When sitting in a fast-moving car, you will feel thrown outward when turning, which is centrifugal phenomenon.

(4) One corner of the coal pile will turn black for a long time, which is the diffusion phenomenon of solid molecules.

(5) Drilling wood can make a fire, that is, doing work to change internal energy.

(6) You will feel warm if you lean against the heater. This is heat transfer.

(7) The working principle of nail clippers, scissors and tweezers is lever.

(8) There is a sense of weightlessness when taking a pirate ship.

(9) When the incandescent lamp is permanent, there will be a layer of black on the bulb wall, which is the sublimation of tungsten wire.

(10) In daily life, people often encounter this phenomenon: when they take off their clothes and sleep at night, they often hear crackling sounds in the dark, accompanied by blue light. They met and shook hands, and as soon as their fingers touched, they suddenly felt the sting of their fingertips; When you get up in the morning to comb your hair, it tends to "float". The more you manage, the more chaotic it is. When you pull the door handle and turn on the tap, you will get an electric shock, and you will often make a "bang, bang" sound. This is static electricity generated in the human body.

(1 1) Salt water only meets ice at minus 20-50 degrees, and the more salt, the lower the temperature.

Vinegar freezes at about MINUS 20 degrees.

(12) The density of soup is higher than that of water, not because of oil.

(13) A small amount of dilute hydrochloric acid or sodium hydroxide solution can make water more conductive.

(14) Add a few drops of edible oil to a small amount of white vinegar, shake well and let it stand for a while, and floc will appear; If a small amount of detergent is added dropwise, foam will appear when shaking. If you don't shake it, it will float on the vinegar surface

(15) Take a glass bottle, put a one-dollar coin on the glass bottle mouth, and put your hand over the glass bottle to keep rubbing and heating, and you will see the coin dancing.

Please explain the following phenomena in daily life: 1, salt as a solid can increase the friction of pavement and reduce traffic accidents; Increase the salt solubility of snow-water mixture, reduce its freezing point, and make snow melt quickly.

2. Salt water can quickly change the salinity of the environment, mainly changing the salt capacity of the fluid alternating environment around the wound, which can kill most bacteria near the wound and prevent infection.

Alum is called water purifier. After being dissolved in water, it can precipitate various slightly soluble substances and purify the water quality.

Some phenomena of burning money in daily life 1. Lighters, matches.

2. Gas welding

3. Phosphorus has a low ignition point and easily reacts with fire, leading to combustion.

4. Gasoline burning

Some problems in daily life are similar to mine. I hate hypocrites the most. I chose to leave my last job because of those little people (there are other reasons, of course, but I still can't stand those people). Personally, I feel that there are too many hypocritical people, too many fooling around, and too few honest people like you. You should learn from your father in this respect. Although it is not easy to mix society now, there are fewer and fewer such people.

You only wrote about your family. I don't know what your circle of friends is like. In this respect, I personally feel good about myself, although my circle of friends is very small, which is determined by my personal character-you give me a foot, I respect you, you give me a negative, and you will never come near me again! Therefore, since I graduated from school and joined the work, my social circle has been very small. Although I have made new friends, they are all ordinary, and only a few friends who grew up together are the most sincere. I'm not very talkative. Speak frankly, don't ramble. When I encounter problems, such as your situation, I will tell my best friends and they will help me. Even if I can't come up with any good ideas, my mood at that time is different. Of course, no matter what idea you give, it's up to you to make up your mind in the end.

The above is the relaxation stage of the conversation, hehe, say something specific. As far as your dinner is concerned, I don't think you should pay attention to it. After all, those two people are just your father's friends, not yours. You're just entertaining your parents. You should eat and drink. Sure, just be a little lady. Don't care too much about other people's eyes or words. In this case, you will be very tired. I used to be like this. I always want to know what others think of me, what they are saying about me, how I should make people like me, and so on. These are all manifestations of perfectionism. Actually, it's not necessary Mouth and eyes grow on other people's heads. We cannot control it. Go your own way and let others do what they like ~ explain, I'm not saying. I am a perfectionist personally. I used it in my work and got the approval of the leaders. I left it to them, and they put one hundred and twenty hearts in it. After I left, the leader asked me to go back, and those people couldn't come back with me, hehe, digression.

Seeing that you mainly write about eating and other details, such as insecurity and depression, I think you should make more friends, at least find a confidant who can treat each other sincerely for life. I don't know what your situation is, going to school? Work? Unemployment or something? Youth is the first choice, followed by students. After joining the work, there will be fewer sincere friends, because there will be benefits afterwards, which is not as simple as when I was a student, and I don't know what benefits are.

I wonder if the above will help you? At first, I said that I was not very good at talking, but I think your situation is similar to mine. I have experienced it, so I said a little more. If you have any questions, you can add them.

No matter what that person says, all you have to do is identify yourself. Just eat with your parents, and of course, spend time with your dad's friends. This is because you don't like your father's friends. If you like, your family will have dinner with friends, and you won't have any troubles at this time. Again, whatever they say, you can do it with a clear conscience. Laugh and laugh with them at dinner, and ignore people who don't like it after dinner.

As for the shadow you said, what went out? Why can't you get out? If you think you have gone out, then you have gone out; You think you'll never get out, so you'll live in it forever. This is a completely subjective idea. How about coming out or not? Things are over, you don't have to live in the present and the future. Of course, you still have dreams. If you want to live a better life in the future, you can't let the past affect you for a lifetime. If you want to avoid a question, you always use the shadow as an excuse, which is not what you want. You should forget it or make it a motivation-in order to forget it, you should arrange things for yourself so that you don't have to think about it anymore. Arranging things is the motivation itself, such as studying hard and enriching your spare time.

Some troubles in daily life: scientific and technological inventions are not small creations. What you do is a utility model at best, not an invention. When you apply for a patent, you will find that I have a new idea of a small notebook, but the cost of making a finished product is too high; There are also several patents, but they are all given to the school. I can offer some free ideas if you like. To develop the good habit of carrying pens and notebooks with you, you can record some inspirations in your life. If there are funds, we can cooperate to develop patents.

Common phenomena in daily life. How to explain scientifically that this is the function of the subconscious, such as me, every time I look at it, the time is always in the 36th second. I thought it was like this every time, but it wasn't. I just accidentally read it twice and was deeply moved by it. Every time I see it, I will leave a deep impression. When I see other times, I don't care. After a long time, in your subconscious, I will subconsciously look at the time. You don't care about anything except the specific time. It has long been an illusion that I will look at my watch every time I reach a specific time, and it is the same every time. We often look at our watches for less than a second. If you don't look at your watch deliberately, the action of looking at your watch will not be remembered. Only by repeating it several times will you get an impression, and then you will start to wonder why you always look at your watch at this time. It's basically like this.