What Is a Period Certain?

Time is one of the seven basic physical quantities in physics (length m, time s, mass kg, thermodynamic temperature K (on), current unit A (ampere), light intensity cd (candela), amount of matter mol (mol)) First, the symbol is t.

[shí jin]

Time form

Straight time: The time formed by points moving on a straight line.

Segment time: the time formed by the moving points on the segment, that is, the period.

Time point: The time formed by the point at a certain position.

Zero time: The time formed by points that never move.

Non-existent time:

Relatively absent time: not imaginary time relative to a point that can move in the highest dimension.

Absolutely no time: imaginary time relative to a point that can move in the highest dimension.

Other forms of time: Time formed by points moving on curves, parabolas, polylines, etc.

Broadly speaking:

Gravity, on the other hand, is a universal force between all forms of energy or mass. It cannot be confined to the membrane; instead, it penetrates the entire space. Because gravity can not only dissipate, but can also dissipate into extra dimensions, its attenuation with distance should be more severe than electricity. Electricity is limited to the membrane. However, we know from the observations of planetary orbits that the gravitational pull of Taiyiyangyi decreases as the planets leave Taiyiyangyi the farther and farther, in the same way that electricity decreases with distance.

Thus, if we do live on a film, there must be some reason why gravity does not spread far away from the film, but is limited to its vicinity. One possibility is that the extra dimension ends on a second shadow film, which is not far from the film in which we live. We can't see this shadow film, because light can only travel along the film and cannot pass through the space between the two films. However, we can feel the gravity of the objects on the shadow film. There may be shadow galaxies, shadow stars, and even shadow people, who may be greatly surprised by the gravitational force that comes from the matter on our membranes. To us, such shadow objects appear as dark matter, which is invisible matter. But its gravity can be felt.

In fact, we have evidence of dark matter in our own galaxy. The total amount of matter we can see is not enough for gravity to hold the rotating galaxies together. Unless there is some dark matter, the galaxy will fly apart. Similarly, the total amount of material we observe in galaxy clusters is not enough to prevent them from spreading, so dark matter must be present. Of course, shadow film is not a necessary condition for dark matter. Dark matter may simply be a form of matter that is difficult to observe, such as wimp (weakly interacting heavy particles), or brown dwarfs and low-mass stars that have never been hot enough to burn hydrogen.

Because gravity diverges to the area between our film and the shadow film, the gravitational pull between two neighboring objects on our film decreases with distance more than electricity, because the latter is limited to the film. We may measure the short-range behavior of gravity in the laboratory using an instrument invented by Sir Cavendish of Cambridge. So far we have not seen any difference from electricity, which means that the distance between the membranes cannot exceed one centimeter. This is tiny by astronomical standards, but it is huge compared to the upper limits of other extra dimensions. A new measurement of gravity at short distances is underway to test the concept of a "film world". ^[2]

Press the surface of the earth

It refers to the hour. In ancient times, there were 12 hours in a day. The Earthly Branch was used as the name of the hour. Chronological

Time idiom

Time

White horse

Three autumn days

Dong Yan is dead, Sang Yufei is late

Years like a shuttle

Flick

Time quote

The golden years don't come again, it's hard to get one day in the morning, and you should be encouraged in time. (Tao Yuanming)

Do not take it easy, the teenager's head is white, empty and sad! (Yue Fei's "Man Jiang Hong") ^[4] Tomorrow will be tomorrow, and there will be so many tomorrow. I will be born tomorrow, and everything will be done. If the world is tired tomorrow, spring is coming and autumn is coming. Look at the water flowing east, and see the sun and the west fall. Tomorrow can be a hundred years old, please listen to my song tomorrow. (Wen Jia's "Tomorrow Song")
The winter is more than the age, the night is more than the day, and the rainy is more than the hour. ("The Three Kingdoms, Wei Shu, Wang Su Chuan" Pei Songzhi's "Wei Lue")
Do not say that the inch is too short, because it is too difficult to get it again. Needless to say, it's hard to say nothing. (Qing · Zhu Jing)

Time is life, time is speed, time is power. (Guo Moruo)

Time is like water in a sponge. As long as you want to squeeze, there is always time. (Lu Xun) ^[4]

Foreign part: ^{[4] The} fastest and slowest in the world, the longest and the shortest, the most mundane and most precious, the most overlooked and most regrettable is time. (Gorky)
Those who forget today will be forgotten tomorrow. (Goethe)
Time is the least favored, 24 hours for anyone; time is also favored, not 24 hours for anyone. (Huxley)

We will never get more time than we have, in fact we have all the 24 hours that existed.Carnegie's famous saying

Nothing can resist the time that devours everything.Disraeli's famous quote ^[1]

Time is unselfish and ruthless. It does not extend for happy people, people with heavy tasks, nor shortens for painful people, anxious waiters.-Tagore's famous saying ^[4]

No time, no day. Mo Zi's famous saying ^[4]