I didn't remember it until the bell rang.

I don't remember people who don't contact often until the bell rings.

Books that I don't remember often and remember only when I meet them.

Accidentally looking at the phone and noticing the name of qq friends list, mc? . Those lying in that column are the best friends of those years. This name was changed after finishing the chapter of Einstein's theory of relativity in high school, and it has been used until now. At that time, I naively thought that there were still eternal things in the world, and that even if I gained weight, E was still a constant.

Before, I didn't quite understand why energy was changing. The mass m is a constant in physics and the speed of light c is a constant. How does e change? Even if you have other abilities, mc? It is also a fixed value.

A few years later, I didn't notice another concept when I was looking through my mobile phone:

This formula shows that an object still has energy when it is stationary relative to a reference system, which is contrary to Newton's system, because in Newton's system, a stationary object has no energy. This is why the mass of an object is called the rest mass. E in the formula can be regarded as the total energy of the object, which is directly proportional to the total mass of the object (including the mass at rest and the mass brought by motion), and only when the object is at rest is it directly proportional to the (static) mass of the object (the mass in Newton's system). This also shows that the total mass and static mass of an object are different. On the contrary, a beam of photons propagates in a vacuum, and its rest mass is zero, but because they have motion energy, they also have mass.

One day, I thought of asking Du Niang, and translating it into Chinese is the relativity of love/butterfly effect. Very interesting. The butterfly effect I learned from reading is like this. Although it feels a little strange, it doesn't make sense.

"A butterfly in the tropical rain forest of the Amazon River basin in South America can trigger a tornado in Texas within two weeks with an occasional flap of its wings." The reason is that the movement of butterfly flapping its wings causes changes in the surrounding air system, resulting in weak airflow, which in turn causes corresponding changes in the surrounding air or other systems, causing a chain reaction and eventually leading to great changes in other systems.

This is the so-called chaotic phenomenon.

If this is the case, there is something in the space-time of the universe, which is invisible, colorless and tasteless, and is in a quiet nirvana state of nothing, nothing without nothing, no big or small, no inside and no outside. It is everywhere, everywhere, and is colored by the radiation of material energy. In daily life, people call it light.

In mathematics, people call it 0; In physics, people call it unified field, holographic energy field, vacuum, zero-point energy, non-zero energy level, massless energy level, seamless whole, Higgs invisible energy field, dark energy, supergravity field, abnormal freedom of string theory, magical mysterious film of M theory, infinite Taiji in Yijing, ontological origin in philosophy, God of Islam and God of Catholicism. This is the incredible nature of space-time in the universe.

When I was watching Zhihu, I explained the mass-energy equation with philosophy in an article, including three assumptions:

1, when there is energy (real or not), there is no mass and no radiation speed, which is 0. E=0×0？ →? 0

This means the spontaneous light of energy, the light of silence, the energy of vacuum, the energy of zero point and the realm of life.

2. When there is no energy, no radiation speed and no mass (actually nothing), it is 0. 0=0×0? →? 0

This means that peaceful nirvana is like a lifeless life.

3. when there is energy in the ocean of silent light, it will inevitably produce mass, that is, e =? ×c？ →? m=E÷c？

This means that the birth of the material world can not be separated from energy and light; It also explains why this world exists; It is the origin of energy, radiation speed and light speed in the first meaning 0. The two complement each other to achieve all beings in the universe. The origin is 0, and the origin is empty. This is: the self is not born, and the self is not dead; Although the law is born, if it does not move; If all laws are born, if all laws are not born.

The eighth power and mass of the speed of light are very different and incomparable. As the saying goes: a gentleman is cautious at the beginning, and the difference is thousands of miles. However, when the gas is full, it is empty, and when the millet is big, it is small, and the difference is thousands of miles. Think of dominoes, as if the power of "sitting together" is on the verge. So there is a rigorous theory.

Einstein? Say: Energy is quality. Rove Landauer? Say: Information is energy. For example, if you are given a USB flash drive with a photo in it, and you want to delete this photo (you can't destroy the USB flash drive), you must connect the USB flash drive to the computer, then the computer will definitely consume electricity, and you must consume energy to delete this photo. Therefore, the Landauer principle also explains why computers generate heat at work, because computers are always erasing information;

In fact, for the human brain, the human brain is also a kind of memory. If you want to forget some things and some people, you must also consume energy. The reception and release of information are the same. It seems that the action of force is mutual, will it be powerful out of thin air? I also remembered that "people's feelings are mutual." The first time I heard this sentence was when she was walking with a friend in junior high school. Don't forget, there will be consequences There should still be a reason.

Seeing Weibo the other day made people laugh. Presumably, no one can match him at present, which makes contemporary people envy him. Einstein is the only one who can catch shoes and hair.

Einstein is so talented and interesting, which is really interesting.

Please develop your brain more,

Please go to bed early,

Please take good care of your hair

Ha ha ha ha.