Bitcoin crazy history
Publish: 2021-05-17 09:31:23
1.
I think the crazy rise of bitcoin price will certainly affect the trend of A-share market to a certain extent. I think the biggest impact on A-share market is the decline of A-share market, because in the process of speculation on bitcoin, more capital flows from A-share market to bitcoin, so if there is no capital in A-share market, There is bound to be a downward trend
basically, people all over the world have paid attention to the price of bitcoin, because bitcoin is the fastest rising asset in the history of this society, and it has been supported by the top companies in the world, because the top companies, such as Tesla, have started to hype, which shows that this kind of currency is really profitable
First, the funds in the A-share market will flow to the bitcoin market< p> In fact, this is a very simple truth, because the capital in the market flows to profitable places. So far, the profitable phenomenon in the capital market no longer exists. In the bitcoin market, the effect of making money is very obvious, and you can get most of the wealth in your life in a short time, which is attractive to anyone . As a result, you can no longer afford bitcoin, but you can buy it through off-site operation, and you can actively buy it through fund-raising, So the capital chain is bound to change{ RRRRR}I think investors operating in the A-share market must consider the impact of bitcoin market on the A-share market, because there is a certain amount of capital in the market, it will not change much in a short time , if there is a crazy rise in the bitcoin market, Then the amount of capital in other capital markets will certainly flow to the bitcoin market. At that time, the prices in other capital markets will graally fall
2.
The decline and rise of bitcoin are normal phenomena, because it is a kind of virtual currency. Since it is a virtual currency, it is bound to rise and fall, just like stocks. Personally, I don't think it's cutting leeks, because bitcoin is a virtual currency. As we said earlier, there are ups and downs. This is the law of development of things
bitcoin is like this. We should understand it first, and then make a judgment. This is the most important thing. The learning before the exam is the judgment, and the result of the exam is the gain. And those who have not learned, of course, can not enjoy themselves, so I personally think the crazy fall and rise of bitcoin is a normal phenomenon. Of course, this is only my personal understanding, not the public opinion
3. Manual shooting skills of SLR camera
1. Take close-up pictures of small still objects, such as flowers, birds and insects:
use AV file, the aperture should be f5.6 or below, the focal length should be more than 50, and try to shoot within 1m to make the background virtual
if the light is good, ISO 100, if the light is bad, ISO should be within 400<
2. Shooting people:
basically use a large aperture (within f5.6) and a focal length of more than 50 mm. The shooting distance depends on the whole body, half body and big head, which makes the background virtual. Use AV file
good light, iso100, bad light, iso400
people in motion use tracking to reflect the sense of motion (see the shooting of moving objects below for details)<
3. Shooting:
AV file, use the appropriate aperture, above F8, the focal length is arbitrary, but generally the wide-angle end has distortion, use it as appropriate<
4. Shooting night scene:
upper tripod, AV gear, custom white balance or incandescent lamp, aperture above F8, small aperture can make the light proce starlight effect, use the reflector pre rising function to rece the vibration caused by the reflector lifting after pressing the shutter; And cover the viewfinder with the square cover on the strap to prevent stray light from entering from the back and affecting the image quality; ISO 200, as far as possible to make the exposure time longer, so that some people who have no intention to walk away from the screen disappear, leaving no traces, clean the scene
for example, when taking a square with people coming and going, you can use a very small aperture of about F20 and iso100. In this way, the exposure time will be very long, and the moving figures will not stay in the photos! The square will be clean<
5. Shooting fireworks:
using shutter line and B shutter, you can shoot multiple fireworks overlapping effect<
6. Shooting things:
when the light is good: AV, the aperture size should be handled according to the circumstances; Large depth of field can be obtained by using aperture above F8, and shallow depth of field can be obtained by using small aperture
if you want to have a very dynamic effect, you can use the TV gear, the shutter is about 1 / 30, when you focus and press the shutter, the lens will follow the object at an appropriate speed, which will proce a very dynamic effect
poor lighting: we can only handle it according to our own discretion, plus use the follow-up camera<
7. Shooting running water or fountain:
using TV and about 1 / 50 shutter speed, you can shoot Satin effect. If you use too fast shutter speed, the fountain will shoot discontinuous water drops<
8. Taking photos at night:
use tripod to adjust white balance, and automatically or custom white balance; iso100-400 AV gear, aperture about F8, use slow synchronous flash, rear curtain flash mode; At this time, the flash will flash twice, press the shutter to flash once, and flash again before the end of exposure, so don't leave before flashing twice
in this way, the characters can be clear and the background neon is beautiful, so that the background will not be too dark e to insufficient exposure< No matter what you shoot, don't shoot with the maximum aperture unless you want to keep a safe shutter
2. Please use the aperture of F8 ~ F11 as much as possible when shooting scenery
3. The maximum aperture can be reced by 1-2 levels when taking close-up of people and still life
4. The safety shutter should be controlled above the reciprocal of the focal length as far as possible. The wide-angle shutter should also be more secure at more than 1 / 30 second. If the shutter is insufficient, please increase the aperture or ISO<
metering method:
1. Don't measure the light to the sky or the darkest place. Go to the middle value
2. According to your subject matter, make good use of the metering mode (balance metering, point metering, central key metering...)
3. If the light measurement is not accurate, please use AE lock to expose and lock the gray things around you before shooting
4. Try not to measure the light on white or black objects, otherwise remember to rece eV for black and increase eV for white<
EV is exposure compensation.
exposure compensation is also an exposure control method, which is commonly used in ± If the ambient light source is dim, the exposure value (such as + 1eV, + 2eV) can be increased to highlight the clarity of the picture
most of the small digital cameras adjust the exposure compensation through the menu
in the process of shooting, if you press half of the shutter, the LCD will display pictures similar to the final effect picture, focusing and exposure will start. The exposure at this time is exactly the exposure of the final picture. If the picture is obviously bright or dark, it means that the automatic metering accuracy of the camera has a large deviation, and the exposure compensation should be enforced, but sometimes the brightness displayed ring shooting is different from the actual shooting result. Digital camera can browse the picture immediately after shooting, at this time, you can more accurately see the brightness of the picture, there will be no difference. If the shooting result is obviously bright or dark, it is necessary to re shoot and force the exposure compensation
the shooting environment is dim, and the brightness needs to be increased. When the flash cannot work, the exposure can be compensated and the exposure can be increased appropriately. For exposure compensation, if the photo is too dark, increase the EV value. Every 1.0 increase in EV value is equivalent to doubling the amount of light intake. If the photo is too bright, decrease the EV value. Every 1.0 decrease in EV value is equivalent to doubling the amount of light intake. The compensation interval can be adjusted in 1 / 2 (0.5) or 1 / 3 (0.3) units according to different cameras
when the white object to be photographed looks gray or not white enough in the photo, it is necessary to increase the exposure. In short, "the whiter the object is, the more white the object is." this seems to run counter to the basic principles and habits of exposure. In fact, it is not. This is because the main body of the camera is often the center of the light measurement, and the White main body will make the camera mistakenly think that the environment is very bright, As a result, the exposure is insufficient, which is also a common problem for most beginners
because the shutter time or aperture size of the camera is limited, it is not always able to reach the 2eV adjustment range, so the exposure compensation is not omnipotent, and it may still be underexposed in too dark environment. At this time, it is necessary to consider cooperating with the flash or increasing the ISO sensitivity of the camera to improve the brightness of the picture
generally speaking, the smaller the brightness contrast of the scene, the more accurate the exposure, otherwise, the larger the deviation. The grade of the camera is high and low. If the grade is high, the metering is more accurate, and if the grade is low, the deviation will be increased. If it is a traditional camera, the tolerance of film is relatively large, and the exposure deviation will not have a big problem within a certain range, but the CCD tolerance of digital camera is relatively small, and slight exposure deviation may affect the overall effect
in a word, the adjustment of exposure compensation is determined by experience and sensitivity to color. Users must compare the image quality, clarity, restoration degree and noise size under different exposure compensation to get the best picture
note:
the aperture in Canon's manual refers to the F value. The larger the aperture, the greater the depth of field
generally speaking, aperture refers to aperture, which is inversely proportional to F. the larger the aperture, the smaller the depth of field
AV -- aperture priority auto exposure
TV -- shutter priority auto exposure
AE auto exposure
AF auto focus
AF-S -- single auto focus, the same as saf. The opposite is continuous autofocus
MAF - monitor AF, which can shorten the focusing time. The camera will adjust the focus before half pressing the shutter button, so that you can compose with the adjusted focus. When the shutter button is half pressed and AF locking is completed, the focus will be locked
ev - exposure value, which is usually used in exposure compensation
ISO sensitivity. Each difference of sensitivity is equivalent to the corresponding exposure value of aperture or shutter
brother, if you have time, go to ZhongGuanCun video forum and see the forum.
1. Take close-up pictures of small still objects, such as flowers, birds and insects:
use AV file, the aperture should be f5.6 or below, the focal length should be more than 50, and try to shoot within 1m to make the background virtual
if the light is good, ISO 100, if the light is bad, ISO should be within 400<
2. Shooting people:
basically use a large aperture (within f5.6) and a focal length of more than 50 mm. The shooting distance depends on the whole body, half body and big head, which makes the background virtual. Use AV file
good light, iso100, bad light, iso400
people in motion use tracking to reflect the sense of motion (see the shooting of moving objects below for details)<
3. Shooting:
AV file, use the appropriate aperture, above F8, the focal length is arbitrary, but generally the wide-angle end has distortion, use it as appropriate<
4. Shooting night scene:
upper tripod, AV gear, custom white balance or incandescent lamp, aperture above F8, small aperture can make the light proce starlight effect, use the reflector pre rising function to rece the vibration caused by the reflector lifting after pressing the shutter; And cover the viewfinder with the square cover on the strap to prevent stray light from entering from the back and affecting the image quality; ISO 200, as far as possible to make the exposure time longer, so that some people who have no intention to walk away from the screen disappear, leaving no traces, clean the scene
for example, when taking a square with people coming and going, you can use a very small aperture of about F20 and iso100. In this way, the exposure time will be very long, and the moving figures will not stay in the photos! The square will be clean<
5. Shooting fireworks:
using shutter line and B shutter, you can shoot multiple fireworks overlapping effect<
6. Shooting things:
when the light is good: AV, the aperture size should be handled according to the circumstances; Large depth of field can be obtained by using aperture above F8, and shallow depth of field can be obtained by using small aperture
if you want to have a very dynamic effect, you can use the TV gear, the shutter is about 1 / 30, when you focus and press the shutter, the lens will follow the object at an appropriate speed, which will proce a very dynamic effect
poor lighting: we can only handle it according to our own discretion, plus use the follow-up camera<
7. Shooting running water or fountain:
using TV and about 1 / 50 shutter speed, you can shoot Satin effect. If you use too fast shutter speed, the fountain will shoot discontinuous water drops<
8. Taking photos at night:
use tripod to adjust white balance, and automatically or custom white balance; iso100-400 AV gear, aperture about F8, use slow synchronous flash, rear curtain flash mode; At this time, the flash will flash twice, press the shutter to flash once, and flash again before the end of exposure, so don't leave before flashing twice
in this way, the characters can be clear and the background neon is beautiful, so that the background will not be too dark e to insufficient exposure< No matter what you shoot, don't shoot with the maximum aperture unless you want to keep a safe shutter
2. Please use the aperture of F8 ~ F11 as much as possible when shooting scenery
3. The maximum aperture can be reced by 1-2 levels when taking close-up of people and still life
4. The safety shutter should be controlled above the reciprocal of the focal length as far as possible. The wide-angle shutter should also be more secure at more than 1 / 30 second. If the shutter is insufficient, please increase the aperture or ISO<
metering method:
1. Don't measure the light to the sky or the darkest place. Go to the middle value
2. According to your subject matter, make good use of the metering mode (balance metering, point metering, central key metering...)
3. If the light measurement is not accurate, please use AE lock to expose and lock the gray things around you before shooting
4. Try not to measure the light on white or black objects, otherwise remember to rece eV for black and increase eV for white<
EV is exposure compensation.
exposure compensation is also an exposure control method, which is commonly used in ± If the ambient light source is dim, the exposure value (such as + 1eV, + 2eV) can be increased to highlight the clarity of the picture
most of the small digital cameras adjust the exposure compensation through the menu
in the process of shooting, if you press half of the shutter, the LCD will display pictures similar to the final effect picture, focusing and exposure will start. The exposure at this time is exactly the exposure of the final picture. If the picture is obviously bright or dark, it means that the automatic metering accuracy of the camera has a large deviation, and the exposure compensation should be enforced, but sometimes the brightness displayed ring shooting is different from the actual shooting result. Digital camera can browse the picture immediately after shooting, at this time, you can more accurately see the brightness of the picture, there will be no difference. If the shooting result is obviously bright or dark, it is necessary to re shoot and force the exposure compensation
the shooting environment is dim, and the brightness needs to be increased. When the flash cannot work, the exposure can be compensated and the exposure can be increased appropriately. For exposure compensation, if the photo is too dark, increase the EV value. Every 1.0 increase in EV value is equivalent to doubling the amount of light intake. If the photo is too bright, decrease the EV value. Every 1.0 decrease in EV value is equivalent to doubling the amount of light intake. The compensation interval can be adjusted in 1 / 2 (0.5) or 1 / 3 (0.3) units according to different cameras
when the white object to be photographed looks gray or not white enough in the photo, it is necessary to increase the exposure. In short, "the whiter the object is, the more white the object is." this seems to run counter to the basic principles and habits of exposure. In fact, it is not. This is because the main body of the camera is often the center of the light measurement, and the White main body will make the camera mistakenly think that the environment is very bright, As a result, the exposure is insufficient, which is also a common problem for most beginners
because the shutter time or aperture size of the camera is limited, it is not always able to reach the 2eV adjustment range, so the exposure compensation is not omnipotent, and it may still be underexposed in too dark environment. At this time, it is necessary to consider cooperating with the flash or increasing the ISO sensitivity of the camera to improve the brightness of the picture
generally speaking, the smaller the brightness contrast of the scene, the more accurate the exposure, otherwise, the larger the deviation. The grade of the camera is high and low. If the grade is high, the metering is more accurate, and if the grade is low, the deviation will be increased. If it is a traditional camera, the tolerance of film is relatively large, and the exposure deviation will not have a big problem within a certain range, but the CCD tolerance of digital camera is relatively small, and slight exposure deviation may affect the overall effect
in a word, the adjustment of exposure compensation is determined by experience and sensitivity to color. Users must compare the image quality, clarity, restoration degree and noise size under different exposure compensation to get the best picture
note:
the aperture in Canon's manual refers to the F value. The larger the aperture, the greater the depth of field
generally speaking, aperture refers to aperture, which is inversely proportional to F. the larger the aperture, the smaller the depth of field
AV -- aperture priority auto exposure
TV -- shutter priority auto exposure
AE auto exposure
AF auto focus
AF-S -- single auto focus, the same as saf. The opposite is continuous autofocus
MAF - monitor AF, which can shorten the focusing time. The camera will adjust the focus before half pressing the shutter button, so that you can compose with the adjusted focus. When the shutter button is half pressed and AF locking is completed, the focus will be locked
ev - exposure value, which is usually used in exposure compensation
ISO sensitivity. Each difference of sensitivity is equivalent to the corresponding exposure value of aperture or shutter
brother, if you have time, go to ZhongGuanCun video forum and see the forum.
4. At present, bitcoin is not stable, it is not a good way of payment, it can only be regarded as an investment
the price of bitcoin is determined by supply and demand. When the demand for bitcoin increases, the price of bitcoin rises; As demand decreases, prices fall. At present, only a few bitcoins are in circulation, and new bitcoins are issued at a predictable rate of graal decline, which means that demand must follow this inflation level in order to maintain price stability. Compared with the market scale it may become, bitcoin is still a relatively small market at present. It does not need a lot of money to make the market price fluctuate up and down. Therefore, the price of bitcoin is still very unstable.
the price of bitcoin is determined by supply and demand. When the demand for bitcoin increases, the price of bitcoin rises; As demand decreases, prices fall. At present, only a few bitcoins are in circulation, and new bitcoins are issued at a predictable rate of graal decline, which means that demand must follow this inflation level in order to maintain price stability. Compared with the market scale it may become, bitcoin is still a relatively small market at present. It does not need a lot of money to make the market price fluctuate up and down. Therefore, the price of bitcoin is still very unstable.
5. Line
Road:
Zhengzhou Puyang
Li
distance:
230 km
car
type:
luxury bus
ticket
price:
70 yuan
6:00-19:40
30 minutes a class
it's six o'clock at the earliest
Road:
Zhengzhou Puyang
Li
distance:
230 km
car
type:
luxury bus
ticket
price:
70 yuan
6:00-19:40
30 minutes a class
it's six o'clock at the earliest
6. Condyloma acuminatum does not grow there, it is not mucous membrane
unless it's broken
1. Wash regularly
2. Strangle with thin thread.
unless it's broken
1. Wash regularly
2. Strangle with thin thread.
7. Bitcoin bar, from the beginning of the basic no one interested in, to speculation in recent years, repeatedly up and down, it's really crazy.
8. Investors should pay attention to rational investment, investment according to their own economic strength, not blindly follow suit< p> 
there may be many small partners. I don't know what bitcoin is? Bitcoin is a kind of cryptocurrency. There are many kinds of cryptocurrency, but at present only bitcoin has survived numerous market tests. Now there are millions of businesses around the world accepting bitcoin payment. At present, bitcoin is the currency system with the highest market value. It is worth noting that although bitcoin circulates in the market and is recognized by many businesses, most governments in the world do not recognize bitcoin, but define bitcoin as a commodity. Therefore, bitcoin investment is not protected by law
9. With the rapid development of modern science and technology, the status of cattle, ghosts, snakes and gods in the hearts of the people is getting lower and lower. Although we can't be superstitious, we should be in awe of all things in the world. After all, existence is reasonable. Now let's talk about why Sichuan is called the land of evil spirits. As early as 2000 years ago, when the state of Qin attacked Shu, the state of Shu had suffered heavy casualties, and after entering Shu, there were many corpses everywhere, This is the first massacre of the people who grew up in Sichuan. There are countless ghosts and ghosts in the underground; Because of the fertile land and rich procts in Shu, the first emperor of Qin Dynasty immigrated to Shu from all over the country. The people in this land graally lived and worked in peace and contentment. More than 1000 years later, when people had forgotten their humiliation, an accident happened. That is, the Qing army entered the pass. Under the fierce attack of Manchu, the rule of Ming Dynasty collapsed completely, and the Sichuan people were slaughtered again, This is different from the war in the ancient Shu Kingdom. This time, no matter men or women, old or young, are spared. At the same time, famine and pestilence continue. It can be said that the house is leaking, but it rains at night. The miserable situation is that you can't bear to see and hear. After the war, Sichuan is almost empty, with foxes everywhere. In the early years of Kangxi after the establishment of the Qing government, Zhang dedi, the governor of Sichuan Province, went to Luzhou via Chongqing (at that time, Chongqing was under the jurisdiction of Sichuan Province). After many days of inspection by boat, Zhang didi did not see many people, so he was surprised: where did all the local people go? The attendant replied: they are all dead. There are only a few hundred families left in Chongqing City (from Chaotianmen to Qixinggang Tongyuanmen now), and there are only a dozen families left in the counties under the jurisdiction of Chongqing! The situation of Chongqing reflects the population situation of Sichuan at that time. It is hard to imagine how many people died on this land again in those 30 years. Then the Qing government carried out immigration activities for as long as 10 years. Because there were too few people left, the government allowed the people who came to encircle the land. You can encircle as many as you want. The two wars left countless people dead in this land, and their resentment accumulated. Sichuan is a hilly region with many mountains and rivers. In the eyes of the old people, it is an excellent place for the cultivation of ghosts and spirits, mountain spirits and wild monsters. The legend of demons has been spread in this land for thousands of years. In addition to the countless grievances caused by the two massacres, demons and ghosts spread all over Sichuan from generation to generation. So Sichuan is called the land of evil. However, science has explained that most of the ghost stories are old people's rumors, which are not believable. Even if there are ghosts, they don't come to Digang that day, so it's not necessary to worry about the fact that Sichuan is the land of evil spirits.
10.
bus line: no.k2 → no.307, the whole journey is about 14.4km
1. Walk about 60m from Fuzhou Station to railway station
2. Take no.k2, pass 11 stations, and reach Qiaonan station (or take no.k1 or No.2)
3. Walk about 40m, and reach Qiaonan station
4. Take no.307, pass 10 stations, and reach Fuzhou Strait International Convention and Exhibition Center Station
5. Walk about 430m, Arrive at the Strait International Convention and Exhibition Center
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