Interesting facts about time

Time begins with the Big Bang, or it may end at the coldest temperature. Time is not eternal.

Time can measure our life and influence our world view. It is obvious to martial artists and athletes that we can change the way of time experience. Training changed their concept of time. Because of concentration, for them, one second seems to be much longer than that of untrained people.

There are many "clocks" in our bodies, which will affect the way we perceive the world. They regulate our lives, make rules and set boundaries that we can't cross.

Canadian researchers found that the average attention duration of people is only 8 seconds. When we pay attention, a few seconds pass. If two short tones are played once at an interval of 1 second, we will hear that they are two independent sounds, but if the interval between them is less than 10 millisecond, we will hear that they are one sound. These changes are the result of the reaction speed of neurons.

Time will not only change our body and age, but also change our view of time itself.

The older you get, the faster time seems to pass.

According to scientific research, there are two explanations for this: first, our biological clock changes with age, which makes us feel that time seems to pass faster. Second, old people seldom have novel experiences. So time becomes less interesting for them. It seems that time passes faster because nothing new appears, so there is nothing interesting to mark the passage of time. However, when we are happy, time seems to pass quickly.

The Big Bang was the moment when the universe was born and the beginning of time. Since then, the clock of the universe has been ticking for about 654.38+038 billion years.

The physics closest to the absolute value of time is called "Planck period", named after physicist Max Planck. It is the earliest time stage in the history of the universe, from 0 to about 10-43 seconds, which is a meaningful minimum time interval.

"Planck period" can be said to be the earliest moment and the shortest time interval unit.

Plants are "hunters": plant photosynthesis converts light into chemical energy. The smallest sunlight particles (photons) hit the leaves at the speed of light, and the key to photosynthesis is that plants can capture these energies.

Chlorophyll in plant leaves absorbs light energy and excites electrons in these pigment molecules to a higher energy level. Electrons are transferred through a series of molecules called electron carriers. Plants will then use this energy to produce glucose from carbon dioxide and water.

In the time required for plant reaction, the distance of light movement should not exceed 0.2 mm.

How fast is an idea? The human brain usually runs at a speed of 500 times per second, releasing a new pulse every 2 milliseconds. You can't exceed this limit.

This sounds fast, but computer technology has already surpassed the human brain.

The peak supercomputer in Oak Ridge National Laboratory has a maximum speed of 200 trillion floating-point operations per second. In order to match this speed, the human brain will calculate every second for the next 6.3 billion years!

We need time-lapse photography to clearly see the vibration of hummingbird wings. It can flap its wings dozens of times a second, which is too fast for human eyes.

A study by MIT found that it only takes us 13 milliseconds to process and analyze the images we see, but it is still too slow.

When we use a stopwatch, we should actually add at least150ms. This is the shortest time we need to react to what we see and press the "stop" button, similar to blinking.

The average human reaction time is between 150 and 300 milliseconds. Although we can try to shorten the reaction time, we still face natural limitations, especially age. Canadian researchers found that from the age of 24, every 15 years, people's reaction speed will drop by about 15%.

Snails move slowly. They can see flowers grow. Snail's brain can only process four images per second, that is, once every 250 milliseconds. The human brain processes images 20 times faster.

This makes snails feel slower than humans, but they can also achieve things such as plant growth.

The sight of grass growing is like watching an action movie of snails.

How long has it been?

The researchers found that for most people, attention will only disappear after 8 seconds. In contrast, goldfish's concentration time is 9 seconds. When attention disappears, the brain begins to look for new information, and what we saw a few seconds ago becomes the past.

Research shows that since the beginning of the mobile Internet revolution 20 years ago, human attention has been getting worse and worse. However, there are some ways to improve our attention: meditation can keep what we notice for five minutes.

Circadian rhythm occurs every 24 hours, which is related to our sleep and waking cycle.

But during the waking period, there is also a super-rhythm that controls the operation of the body, with an interval of 90 minutes. Every interval starts from the peak of energy, and at the end, we will feel a little tired both physically and mentally. Then it's time to charge. Like eating snacks or exercising. Through this natural rhythm, we can keep the best running mode of human body.

Time was born in BIGBANG, and it may be doomed to end in the coldest imaginable conditions. Time can measure our life and influence our world view. However, time is not an eternal river. We can influence the way we experience. In order to understand it better, physicists even try to make it closer to stillness. Nevertheless, the law of time is still shrouded in mystery.

2020 is a special year: there will be 13 full moons instead of the usual 12.

Some previous studies have shown that the crime rate will increase during the full moon. It is speculated that this is because the gravity of the full moon will produce tidal force, which will destroy the internal material balance of the human body and may lead to crime.

Recent research has refuted this statement. Scientists at the University of new york have compared the crime data of Canada, Mexico and the United States for many years, and found that the full moon will not push up the crime rate.

All life, whether human, animal or plant, has a time rhythm.

Facts have proved that the sun also goes through cycles, one of which directly affects the earth: every 1 1 year, the magnetic field of the sun changes, and a magnetic storm called "sunspot" is produced on the surface.

Sunspots usually appear in pairs, with magnetic fields pointing in opposite directions. Sunspots look darker because the temperature around the sun's surface is higher. Enhanced activities will produce solar flares and coronal mass ejections, which may affect the earth.

There are two kinds of cicadas in eastern North America that live underground for odd times 13 or 17, and then reproduce.

Some of their predators also have periodic life cycles, but they are often in an even state, so they are rarely consistent with the "selection" of odd cicadas.

A large number of populations of these two cicadas occur in the breeding that is isolated in time and geographical order.

The speed of extinction varies greatly, but the average life span of mammals is about one million years.

Our species, Homo sapiens, has existed on the earth for about 150000 years, and it should be longer.

After billions of years, the sun will become so hot that higher life forms will no longer exist.

But one element still emits radiation: uranium 238. Its half-life is 45 10000000 years.

Therefore, when the heat of the sun destroys higher forms of life on earth, uranium -238 will only be less than it is now.

Time may not exist from the birth of the universe to its demise.

Physicists speculate that although the universe may expand forever, it does not apply to time. If the space is cooled to absolute zero, that is, 0 K, -273. 15 degrees Celsius,? 459.67 F, then all molecular movements will stop and time cannot be measured. Theoretically, time will stop.

At the beginning of 20 17, American scientists cooled the aluminum film to 0.00036 K, which is lower than any natural temperature in the universe.