What is the concept of billions of light years? Light years, a year's journey. Light speed! It is a widely recognized speed limit. It is 299792458 meters per second. It can circle the earth in seven and a half circles in the twinkling of an eye. Seeing it, the light was so fast that he ran for a year, and the measured distance was just a year. Now you can move the mouse to the lower left corner of the screen and click "start"-"program"-"attachment"-"Calculator" to calculate it. This year is 31536000 seconds, run 299792458 meters in one second, and take 9454254955488000 meters out, which is about 100,000 million kilometers. When we see stars billions of light years away, the stars that have caught our eyes have flown for billions of years across the universe. In other words, what we see now is what it looks like a billion years ago! Now, how can we see it only after one billion years ...... The following figure observes the universe at an order of billions of light years. Everything shown in the above pixel points is far-reaching. The universe is endless, staying on paper. Today, let's use our own eyes to experience it!
Billions of light years Now we have reduced our field of vision by 10 times, and the universe still seems empty. However, are the stars that are spotted? 0.1 billion light years Reducing your eyes by an order of magnitude, and those dots still look like the stars are 10 million light years old. More than 1 million light years ago. Rely on me! What, so familiar? Is this what you call "star? It's a bunch of stars. We call it the Milky Way. 100,000 light years at an order of magnitude like 0.1 million light years, we can see the whole galaxy. In fact, the diameter of the galaxy is 100,000 light years. Which of the following can invent a ship with the speed of light? It will take 100,000 years to fly from the side of the Milky Way to the opposite side to bring a large hanging angle! I rely on, in such a long journey, we can see that life is just dying. But this is only for those who are still in the galaxy, the crew on the ship can only feel the journey for several minutes. The theory of relativity is gone. 10 thousand light years our solar system is located at the edge of the inner side of the galaxy spiral wing, about 25 thousand light years from the center of the galaxy. As a result, we took back our field of view to the order of 10 thousand light years, focusing on one of several tentacles of the galaxy. One thousand light years One hundred light years is still dense. Ten years ago, it was very difficult. What is this? 1 trillion km approaching ten times again is still a misty group. What is it? We can see that it is the solar system, and it is not easy to go over the mountains. 10 billion km magnified ten times to observe the stars as the background of the solar system. It is a star. In fact, it is 4.22 light years away from the nearest star of the sun, the half-seat star. The highlights in the figure are just the stars on the background, not part of the solar system. It takes several billions of kilometers to see which track is on the blue frame. Where is the Earth at 0.1 billion km and 0.1 billion km? We can see the earth and the moon in 10 million kilometers. What is this 1 million km? 100,000 km, Earth! Home, sweet home. How is 10 thousand kilometers so clever? We can see from the 1 billion light year that we are facing the United States. View the Earth with a 10 thousand km view. This is the view of God. Google Earth also has this effect, starting with the United States ^_^ (Don't be surprised, this set of pictures itself is the old beauty !) Friends who often play Ge for 1000 kilometers can see it. This is the Penghu Lake in the Great Lakes of North America. The framed city is Chicago. A 100-kilometer view of Chicago. This begins the order of magnitude that we humans can understand and the world that we are familiar. Take a deep breath... 10 km dense (Why ?). House, lakeside house. Xiao 'er, I have a bottle of beer. Some of you have to drink it first. ^_^ 1 kilometer I have a house, facing the sea, spring flowers... 100 meters! What is this on the lawn? It turned out to be a silly guy who slept well... 1. Wake up. Hey, you're all peeked. You don't know. 0.1 m, M, M, we can grasp the scale. We believe that most of the objects that humans are exposed to are in this order of magnitude. Look around you, keyboard, mouse, cell phone, cup, bowl... take a closer look at this guy's hair pretty heavy, just man! 1 cm this is the detail of wrinkles on the hand. Maybe you have zoomed in. Preparing, we are about to enter another unfamiliar field-the micro-View world 1mm of the pores on the hand are no hair. What about the hair? The tissue structure of the skin is visible to the nearest 100 microns. 10 micron a cell is 10 micron, of course, this is General. The largest cell in the world is the ostrich egg. It is a single egg, measured in meters. 1 micron nuclear membrane suspected of being used in biology. As soon as 0.1 microns look at this highly spiral structure, we know it is a chromosome. The foreign text below said: Whenever a human cell contains 23 pairs of chromosomes 100 aier is a unit of length, which refers to a 10-8 power meter. I think you must know that this kind of substance is called DNA, also known as DNA. The molecular structure is clearly visible. Nano-1 is a hot technology for material science, that is, many materials will show a lot of properties that are not displayed in the conventional order of magnitude after being refined to nano-level. At an order of magnitude like nano, we can even clear the number of atoms. The atom is composed of the nucleus and electrons. This is a dense e-cloud. We can see that the e-cloud outside the nucleus is thick. A dense electron cloud outside a 10-meter nucleus. It seems that we have returned to the vast universe. In this way, every atom is like a small universe, and our world is like this... 1 skin meter passes through the largest electronic cloud and finds that the closer to the core is clean. In the middle is the nucleus. The approaching point of PI Mi is the legendary nucleus. The power of 10-12 is called a skin meter. At the order of magnitude of 0.1 skin meters, we can see a lot of balls in the nucleus. They are positive-electric proton and unelectrified neutron. A close-up of the 10-fly rice nucleus. 1. The details of the fly-meter proton (or neutron) are messy. Unknown structure, unknown domain, where belongs to God. 0.1 meters: Once we enter the next level, what will we see and what will we know? |