Light L7 | Critical Angle and Total Internal Reflection | ICSE Class 10 Physics Chapter 4 | Vedantu

2024/04/2414:04:05 science 89471

Light L7 | Critical Angle and Total Internal Reflection | ICSE Class 10 Physics Chapter 4 | Vedantu - DayDayNews

Light L7 | Critical Angle and Total Internal Reflection | ICSE Class 10 Physics Chapter 4 | Vedantu - DayDayNews

1:05:04

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"What are humans doing? They discharge so much sewage! The fish are all affected." "Why do humans pursue progress and development? Human beings are very selfish when they only think about themselves." "Why don't humans let other animals manage the earth?" Early in the morning, th - DayDayNews

"What are humans doing? They discharge so much sewage! The fish are all affected." "Why do humans pursue progress and development? Human beings are very selfish when they only think about themselves." "Why don't humans let other animals manage the earth?" Early in the morning, th

Cognition｜What are humans doing?

05/17 1200

Recently, a latest research jointly conducted by Chinese and foreign scientists successfully achieved direct imaging of the protostellar disk at the center of the Milky Way, "seeing" the "cradle of stars" at the center of the Milky Way for the first time. According to Chinese res - DayDayNews

Recently, a latest research jointly conducted by Chinese and foreign scientists successfully achieved direct imaging of the protostellar disk at the center of the Milky Way, "seeing" the "cradle of stars" at the center of the Milky Way for the first time. According to Chinese res

Dianjing Technology｜Humanity “sees” the protostellar disk for the first time

05/18 1052

Atoms were once considered to be the basic particles of everything in the world, but later people discovered that atoms are composed of nuclei and electrons, and there is a vast space between the nuclei and electrons. How vast is it specifically? Let us take the simplest atom in - DayDayNews

Atoms were once considered to be the basic particles of everything in the world, but later people discovered that atoms are composed of nuclei and electrons, and there is a vast space between the nuclei and electrons. How vast is it specifically? Let us take the simplest atom in

What exists in the vast space between the nucleus and the electrons? Is it an absolute vacuum?

05/18 1428

Dahe Daily·Yu Video Reporter Liu Ruichao Kang Yafei There is a famous story in "Liezi·Tang Wen", which is "Two Children Debating the Sun" in the textbook, "Confucius traveled eastward and saw two children arguing and asked why." Two children analyze from different angles when the - DayDayNews

Dahe Daily·Yu Video Reporter Liu Ruichao Kang Yafei There is a famous story in "Liezi·Tang Wen", which is "Two Children Debating the Sun" in the textbook, "Confucius traveled eastward and saw two children arguing and asked why." Two children analyze from different angles when the

The "smallest sun of the year" appeared on Monday, and the "dog days" are gradually approaching

05/18 1459

In 1938, a fishing boat was fishing near the Comoros Islands near Madagascar and caught a very strange-looking fish. - DayDayNews

In 1938, a fishing boat was fishing near the Comoros Islands near Madagascar and caught a very strange-looking fish.

A "fish" with four limbs was found in the deep sea, weighing up to 100 kilograms and with purple scales. What exactly is it?

05/18 1699

Text and photos/Yangcheng Evening News all-media reporter Ouyang Zhiqiang Correspondent Huo Erman Sponsored by China Electronics Society, Intelligent Human-Computer Interaction Expert Committee of China Electronics Society, Aerospace Medical Engineering and Space Biology Professi - DayDayNews

Text and photos/Yangcheng Evening News all-media reporter Ouyang Zhiqiang Correspondent Huo Erman Sponsored by China Electronics Society, Intelligent Human-Computer Interaction Expert Committee of China Electronics Society, Aerospace Medical Engineering and Space Biology Professi

The Second Annual Conference on Intelligent Human-Computer Interaction Technology will open in Foshan on July 8

05/17 1830

On July 3, Typhoon Siam made landfall in South China and is pouring rain in many places in the south. Typhoon Airi is moving in the Western Pacific. Today, its center has moved into the East China Sea, bringing refreshing blue sky and white clouds to many places in the Yangtze Ri - DayDayNews

On July 3, Typhoon Siam made landfall in South China and is pouring rain in many places in the south. Typhoon Airi is moving in the Western Pacific. Today, its center has moved into the East China Sea, bringing refreshing blue sky and white clouds to many places in the Yangtze Ri

rare! As hot and high pressure climbs up the Tibetan Plateau, will there be problems with the glaciers? Analysis: Northwest or extreme heat

05/17 1033

I once read "Insects" when I was young, and I was full of yearning for the insect world described by Fabre. I often turned over stones or inspected leaves to look for the small insects hiding in the depths. As I get older, I gradually develop an inexplicable fear of insects in na - DayDayNews

I once read "Insects" when I was young, and I was full of yearning for the insect world described by Fabre. I often turned over stones or inspected leaves to look for the small insects hiding in the depths. As I get older, I gradually develop an inexplicable fear of insects in na

An insect pocket book that brings you closer to nature

05/18 1720

What happened to Tibet? 350 research experts gathered together, and they all claimed: They saw something incredible, which would bring at least billions of resources every year. Even the villagers stood around in surprise. What was going on? What exactly are these things, and wha - DayDayNews

What happened to Tibet? 350 research experts gathered together, and they all claimed: They saw something incredible, which would bring at least billions of resources every year. Even the villagers stood around in surprise. What was going on? What exactly are these things, and wha

Tibetan villagers make new discoveries! 350 experts gather for investigation, bringing in at least 1 billion resources every year

05/18 1036

Xinhua News Agency, Xining, July 3 (Reporter Li Ning, Geng Huihuang) Brown bears passing through the forest, graceful snow leopards, playful and cute desert cats... In recent years, as the ecological environment continues to improve and the ability to capture the traces of living - DayDayNews

Xinhua News Agency, Xining, July 3 (Reporter Li Ning, Geng Huihuang) Brown bears passing through the forest, graceful snow leopards, playful and cute desert cats... In recent years, as the ecological environment continues to improve and the ability to capture the traces of living

Please note! There are brown bears and snow leopards here

05/18 1157

Fang Zhouzi has disappeared from the public eye for several years. He was once a pioneer in fighting counterfeiting and was frequently active in various column groups. He was also called the "Internet Lu Xun". No matter how good a scientific person is in school, in order to produ - DayDayNews

Fang Zhouzi has disappeared from the public eye for several years. He was once a pioneer in fighting counterfeiting and was frequently active in various column groups. He was also called the "Internet Lu Xun". No matter how good a scientific person is in school, in order to produ

Do you still remember Fang Zhouzi? Is he a scientific person or a highly educated paparazzi?

05/19 1695

Last night I went for a walk and saw two primary school students arguing fiercely in the elevator. When one of the boys saw me, he anxiously asked me to be the referee and asked: "Uncle, do you think there are really points, straight lines and points in the universe?" Plane?" I t - DayDayNews

Last night I went for a walk and saw two primary school students arguing fiercely in the elevator. When one of the boys saw me, he anxiously asked me to be the referee and asked: "Uncle, do you think there are really points, straight lines and points in the universe?" Plane?" I t

Are there points, lines and planes in the universe? Will the "two-way foil" in "The Three-Body Problem" exist?

05/19 1848

I saw a piece of news in which NASA Administrator Nielsen announced that China wants to occupy the moon and asked everyone to be careful. I think this director is too naive. The moon has been occupied by the Chinese a long time ago, so there is no need to think about occupying it - DayDayNews

I saw a piece of news in which NASA Administrator Nielsen announced that China wants to occupy the moon and asked everyone to be careful. I think this director is too naive. The moon has been occupied by the Chinese a long time ago, so there is no need to think about occupying it

The moon has been Chinese since ancient times. Nielsen, please shut up. We don’t need to occupy it.

05/19 1973

According to statistics, there are 1.5 million species of animals on the earth. In order to thrive on this beautiful planet, each animal has its own unique secret weapon. There is a group of animals that are the masters of poison in the animal kingdom, making them intimidating to - DayDayNews

According to statistics, there are 1.5 million species of animals on the earth. In order to thrive on this beautiful planet, each animal has its own unique secret weapon. There is a group of animals that are the masters of poison in the animal kingdom, making them intimidating to

The 5 most poisonous animals in the world, some of which have no cure

05/19 1111

Using the locust disaster as a clue and Lockwood's arrest as an auxiliary clue, the plot unfolds bit by bit, going through the black market transactions, dinosaur park, isolation zone, and successful rescue. Because it is a 3D effect, the picture is very good. It's amazing, espec - DayDayNews

Using the locust disaster as a clue and Lockwood's arrest as an auxiliary clue, the plot unfolds bit by bit, going through the black market transactions, dinosaur park, isolation zone, and successful rescue. Because it is a 3D effect, the picture is very good. It's amazing, espec

Jurassic World 3 - Thoughts

05/19 1894

In recent years, China has developed rapidly in the aerospace field. In fact, this can be seen from a series of remarks by NASA Administrator Nielsen, because he will mention China and criticize China on more and more occasions. - DayDayNews

In recent years, China has developed rapidly in the aerospace field. In fact, this can be seen from a series of remarks by NASA Administrator Nielsen, because he will mention China and criticize China on more and more occasions.

Another weird comment! NASA Director: Beware of "China Occupying the Moon", Netizens: The situation is really low

05/19 1045

The couple spent 640,000 to demolish the living room just to build an aerial amusement park for their two daughters. They are so happy that their daughter is the apple of their parents' eyes. They are afraid of falling when they hold it in their hands, and they are afraid of melt - DayDayNews

The couple spent 640,000 to demolish the living room just to build an aerial amusement park for their two daughters. They are so happy that their daughter is the apple of their parents' eyes. They are afraid of falling when they hold it in their hands, and they are afraid of melt

The couple spent 640,000 to demolish the living room just to build an aerial amusement park for their two daughters. They are so happy

05/19 1062

Don’t throw away a drop of the air-conditioning water flowing out of the air conditioner. We can save a lot of money by putting it at home and using it. The method is simple and practical. Let’s learn about it together. - DayDayNews

Don’t throw away a drop of the air-conditioning water flowing out of the air conditioner. We can save a lot of money by putting it at home and using it. The method is simple and practical. Let’s learn about it together.

Don’t throw away a drop of water from the air conditioner. Keep it at home and use it like this. You can save a lot of money by learning how.

05/19 1071

As we all know, when buying a house, we should first give priority to the house type with an exposed guard. However, many people do not care about this issue, or for comprehensive considerations, they have to choose a house type with a hidden guard. Even so, I advise you not to g - DayDayNews

As we all know, when buying a house, we should first give priority to the house type with an exposed guard. However, many people do not care about this issue, or for comprehensive considerations, they have to choose a house type with a hidden guard. Even so, I advise you not to g

"Secret Guards" are not scary. The following four points should be kept in mind. They are all summed up by people who have experienced them.

05/19 1000

502 glue is also a relatively common thing. In daily life, we also use 502 glue to stick some objects. What should we do if our fingers are accidentally stuck by 502 glue? Don't worry, in fact, we only need to drop a little bit of it, and the glue will melt easily without hurting - DayDayNews

502 glue is also a relatively common thing. In daily life, we also use 502 glue to stick some objects. What should we do if our fingers are accidentally stuck by 502 glue? Don't worry, in fact, we only need to drop a little bit of it, and the glue will melt easily without hurting

What should I do if my hands are stuck with 502 glue? Don't worry, just drop a little and the glue will melt immediately without hurting your hands.

05/19 1117

They all say that simple decoration is better, but I didn’t think so at first, until I looked at this 83㎡ small apartment and found that simple decoration is really good. The owner refused to over-decorate and made great choices while ensuring the basic functions. He did not buy - DayDayNews

They all say that simple decoration is better, but I didn’t think so at first, until I looked at this 83㎡ small apartment and found that simple decoration is really good. The owner refused to over-decorate and made great choices while ensuring the basic functions. He did not buy

Refuse to over-decorate, do not add one more piece of furniture to 83 square meters, not even a sofa, live as you like

05/19 1520

What other flowering plants can I buy in summer? In addition to blue snowflakes and bougainvillea, you can also take a look at the following six species. They are relatively heat-resistant and sun-resistant. They bloom brightly in summer and autumn. As long as you ensure sufficie - DayDayNews

What other flowering plants can I buy in summer? In addition to blue snowflakes and bougainvillea, you can also take a look at the following six species. They are relatively heat-resistant and sun-resistant. They bloom brightly in summer and autumn. As long as you ensure sufficie

6 kinds of plants that bloom endlessly in summer. The flowers are so abundant that you will never tire of them.

05/19 1331