HTC issues virtual currency
(1) Yayuan ACU payment
(2) digital asset transaction experience
(3) digital asset deposit and withdrawal ATM machine landing
(4) financial technology consulting live broadcast
(5) offline Roadshow and conference Salon of blockchain project, etc.
Why are "galaxy" and "galaxy" two different concepts? Do you understand
from the earth, because the human eye can not distinguish the dense stars, it is regarded as a silver ribbon, which is what we call the Milky way. The Milky way also got its name. So the concepts of galaxy and galaxy are different
later, astronomer Shapley observed about 100 globular clusters. His statistics show that globular clusters within the constellation Sagittarius account for 1 / 3 of the total clusters, while more than 90% of the globular clusters with
are distributed in the half of the celestial sphere centered around Sagittarius. This result aroused Shapley's conjecture. Assuming that globular clusters and stars are symmetrically distributed in the Milky way, and the center of the Milky way is the sun, then the globular clusters in the sky seen by people on earth should be symmetrically distributed. However, the observation results are inconsistent with it. Shapley wondered if there was another possibility that the sun was actually far from the center of the galaxy. In this way, the globular clusters that people see on earth will show asymmetric distribution
the truth of locust swarms in the Milky Way: where does the Milky way look like
"transverse ridge and lateral peak are different in distance and height. I don't know the true face of Lushan Mountain. It's only because I'm in the mountain. "
this famous poem shows the embarrassment that people in it are difficult to have a panoramic view of things. It's really insightful and vivid! Since ancient times, people have always wanted to know what the world is like, but the ancients could only stand on the earth and observe the earth. How could they see the true face of the earth? Regarding the round earth as a flat land, the ancients believed that "the sky is round and the place is round"
we know that the earth is spherical, because satellites that jump out of the earth can take pictures of the earth for us. But up to now, the human detector has just crossed the edge of the solar system, and human beings dare not think when they can jump out of the galaxy. So how did the face map of the galaxy come from
these questions are true. The full picture of the Milky way is not seen and photographed by telescopes, but drawn by scientists. In other words, the appearance of the Milky way is speculated by scientists
then, is there any reason for scientists' Conjecture? In fact, before we jump out of the earth, human beings have already inferred that the earth should be spherical through measurement data and navigation experience. After the human satellite jumped out of the earth's atmosphere, the real face of the earth was indeed spherical, which proved the previous conjecture. It can be seen from this that although we can't jump out of the Milky way to see the whole picture of the Milky way now, we can also make some conjectures about the appearance of the Milky way according to the information we have
Now, let's follow the idea of scientists to speculate about the face of the Milky way.
the side of the Milky Way looks like a convex lens.
if we talk about the nearest extragalactic galaxy, many friends may first think of Andromeda galaxy, but in fact Andromeda is not the nearest galaxy to us, it is 2.4 million light-years away from the Milky way, And the real little companion of the galaxy is what we're going to talk about today: the Magellanic nebula
in 1912, American astronomer Leavitt discovered the relationship between the circumference of the Cepheid variable of the wheat cloud, and herzpron and Shapley immediately determined the distance of the wheat cloud, becoming the first confirmed extragalactic galaxy. The distance of big wheat cloud is 160000 light years, and that of wheat cloud is 190000 light years. They are 50000 light years apart in space. Magellanic nebula is a small and irregular galaxy. It is a satellite galaxy of the Milky way. It orbits the Milky way once every 1.5 billion years. Because it has no standard fixed shape, the Magellan Nebula has become the most controversial object in the southern hemisphere, even the most imaginative object. Some astronomers say that the Magellanic Nebula seems to interact with dark matter in the universe to form a galaxy bend
what is galactic curvature? I think this is more difficult to explain. To put it simply, the operation of nearby nebulae may have an impact on our galaxy, just like the agitation of the other end of the carpet, which can cause a wave like shape distortion. At present, the Galactic silver plate has become a bowl. The Magellanic Cloud is similar to the Milky way, which also contains many gases and stars. Barley cloud is a dwarf spiral galaxy or irregular galaxy, with a mass of 1 / 20 of the Milky way. The wheat cloud is an irregular galaxy or an irregular rod dwarf galaxy with only 1 / 100 of the mass of the Milky way. Now the wheat cloud has been torn apart and its stars will become part of the Milky way
until modern times, some scientists questioned: the Milky way is too big, light from one side of the solar system to the other side, only less than a year, but in the Milky way, at least 100000 years! In the vast universe, even if many stars are close together, they are not so bright
so, what is the power of the Milky way to attract such a huge space that all the celestial bodies revolve around it? We know that the reason why the sun can attract eight planets to rotate around it is because of its great mass; Therefore, in the center of the galaxy, there must be a star of great mass, attracting hundreds of millions of stars to orbit
in fact, this massive object is a black hole, which lives in the center of the Milky way, and all the objects in the Milky way are circling endlessly. But we must have a question: black holes can't emit light, so why is the core of the Milky way so bright
we must have seen a lot of pictures of the Milky way. In fact, the so-called Milky way is like a cloud, a dense cloud, not like the river in our life. So we have no doubt why the Milky way is flat? It is very complicated to explain this problem, involving a lot of theories and data. To put it simply, in the most primitive times, there were many galaxies in the Milky way. In fact, there were no rules. Each galaxy was a cloud of st and had no chaotic shape. But because of gravity, just like the familiar solar system, a regular structure was formed under the action of this gravity, We can think of him as the beginning of the galaxy. Because this system has a force, called angular momentum, which is conserved in the absence of external interference. The most basic phenomenon formed in this way is revolution. Almost all matter in the galaxy rotates in the same direction. From the whirlpool and other similar rotation in our life, we can know that under the action of this central force, a disk motion is formed, which also ensures that the materials on the disk will not collide disorderly in the process of motion
Why the Milky way is flat is the basis of nebula hypothesis. Under the action of gravity, the mass density of our Nebula will become larger and larger. To a certain extent, the large particles will move around the center of mass under the action of angular momentum, so there is a plane, the plane of rotation of the whole gas cloud. Although it is on a plane, particles can move up and down in this plane. So the Milky way is flat as we see it, and there's a circle of dense particles around it, which are the beating particlesthen we can very simply imagine that there will be chaos. After a long time, the consequence of such inelastic collision is to weaken the vertical force, so a flat plane is formed. At the same time, the whole mass is still in autobiographical motion, so there is a continuous formation of parallel structure, which graally forms the situation we see today. Most galaxies move on the same plane. In fact, this is also the reason why the solar system is flat. After all, these physical knowledge are the same in the universe, and the structure of these stars is also regular
business is losing money
lightning network is a kind of chain breaking technology, which uses layer 2 to eliminate the transaction processing capacity of bitcoin
examples of terminology usage
bitfinex plans to implement tether based lightning network (usdt)
detailed description
if lightning network is introced, it is possible to trade outside the crowded blockchain, so as to speed up the transaction speed and rece the cost. If you can speed up transactions and rece costs, you can make small payments, which is expected to create new procts and services
Mining pool is an organized server, which is created to collect the hash value of each miner and cooperate in mining
examples of terminology usage
the rewards earned by the virtual currency exchange binance in the mining pool can be directly traded by binance
detailed description
in the mining business of vital scale, a mechanism for multiple miners to cooperate in mining. The reward is paid according to the contribution of the mining
7. Half lifehalf life refers to the time when the mining reward (= new circulation) of bitcoin and other virtual currencies is reced by half
examples of terminology usage
cryptocurrency bitcoin (BTC) will reach its third half-life on May 12, 2020, and the mining reward will be reced from 12.5 BTC to 6.25 BTC
detailed description
many virtual currencies have "issuance limits" to prevent inflation, and the new issuance will be reced by half every certain interval of half-life. This is also a noteworthy event unique to virtual money, because with the decrease of supply and the rising of price, the scarcity value increases significantly
the Bank of China is dopda S900, and the mobile customized one has no front camera without WiFi
htc6820 is CDMA CDMA2000, but it seems to burn the number like PHS
these hardware configurations are the same, In addition to the above-mentioned
HTC version of Diamond 2 is the upgraded version of touchdiamond 2, the screen is a little larger, RAM ROM is increased, and others are similar to diamonds.