Bitcoin officially broke down
The concept of bitcoin was founded by Nakamoto
On December 12, 2010, when bitcoin graally became a hot topic, he quietly left and disappeared from the Internet As a descendant of samurai, Nakamoto was born in 1949 in Beppu, Japan. His mother, quanzi, was a Buddhist and brought him up in poverty When his parents divorced in 1959, Nakamoto's mother remarried and immigrated to California with her three sons. Nakamoto and his stepfather don't get along well, but according to his younger brother Arthur, Nakamoto showed his talent in mathematics and science when he was very young, but also showed his "fickle and strange interest"Nakamoto graated from Caltech, majoring in physics. Upon graation, he joined Hughes Aircraft and worked in defense and electronic communications. Later, Nakamoto worked for the U.S. military, and his experience was classified as a state secret. Now searching his files, his life is a blank
In 2008, in an e-mail group discussing information encryption on the Internet, he published an article outlining the basic framework of the bitcoin system. In 2009, he established an open source project for the system, officially announcing the birth of bitcoin. On December 12, 2010, when bitcoin graally became the climate, he quietly left and disappeared from the InternetIn a long enough period of time, the ups and downs of the investment market is a reciprocating cycle. In a short time, human nature has been tested. Between short and long positions, between buying and selling, the wealth of participants is redistributed rapidly
after the news of Sino US trade war settlement came out, the stock market had a good start on Monday, but then fell back in the next few days. Nothing seems to have happened
in the view of many people, the sharp decline after bitcoin's soaring is actually predictable. However, many people are faced with the continuous protection of bitcoin, and subconsciously believe that the price of bitcoin will not plummet at this moment, but when the result appears, it is too late. This time, the bitcoin storm is a wake-up call for investors who are not optimistic about gold to some extent
it can be seen from the slump that bitcoin is still unable to compare with gold. If they disagree, bitcoin will double; If not, it is usually halved. It is impossible for gold to make a systematic forecast based on market news. Gold prices can be predicted by the overall market direction, and changes in news can be used to control gold prices and minimize losses
ring the soaring price of bitcoin, many gold investors gave up their investment in gold and turned to the bitcoin market, which led to a certain degree of decline in the demand for gold investment. After the collapse, market sentiment may return to calm, and gold will be chosen as an investment target again, especially in the period of possible interest rate increase. During this period, if the demand for gold investment rises, a certain amount of bottom support may be added for gold to hedge the negative impact of interest rate increase
On the whole, the bear market is still long. Now is not the best time for the spot party to sell Soha, but there is no need to worry about returning to zero. If the fixed investment is still goodlast year, when bitcoin was more than 100000 yuan, many people who didn't get on the bus patted their thighs and said: when NIMA was more than 20000 yuan, they didn't dare to buy it! God give me another chance to sell my house
after less than a year, bitcoin has returned to more than 20000, but at this time, it says that this thing is going to fall, and it is about to collapse
bitcoin has been declared dead more than 300 times, and now it still has a market value of 59.2 billion. After each new high, there are a group of people who blame themselves for not entering in time with tears. Any opportunity is like this. There are few successful people, and the weak people are mediocre all their lives
2020 is a magic year. Although there are many troubles from the beginning of the year to the end of the year, asset prices are rising very well
let's look at the performance of all kinds of assets:
{rrrrrrr}
here's another interesting thing. In the first seven months of bitcoin coming out, the creator Nakamoto Tsung mined 1.1 million bitcoins himself, accounting for 6% of the total amount of bitcoins. These bitcoins have been left untouched, and now are worth nearly $40 billion
If a market has the four characteristics of high leverage, drastic price fluctuation, limited trading volume and high concentration, then the market is a perfect Chinese chive cutting market
we have done a previous issue of the hunt brothers silver speculation. After hoarding a large proportion of silver, the hunt brothers in the United States manipulated the prices in the futures and spot markets to reap the silver investors in the market. Today's bitcoin market is a bit like the silver market of that year
before any asset bubble bursts, there will be lots of people making money. What is the upper limit of the bubble? How high will the price go? How crazy can market sentiment be? None of this can be predicted
a rational investor should not be distracted by the soaring price, but should carefully think about two questions outside the fanatical market sentiment. Do I really understand the investment logic behind this thing? Is it really worth so much money
if you're like me, you'd better not take part in this kind of incomprehensible excitement
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.
I think the vast majority of bitcoin's 800 million yuan should have gone into the pockets of some capitalists, and the remaining few went into the hands of those investors who speculated correctly in my opinion, bitcoin is more like a bubble economy. It is a game between capitalists and capitalists. Because even if the bubble breaks, they have plenty of means to come out, but for us, these small shareholders are different. p> Therefore, as users, we still need to be more rational to look at these things. The sky won't drop pie for us to pick up. We still need to focus on the present. We can't always look down on those castles in the air< the most important thing is to do what you do now
Bitcoin fell. The price of bitcoin rose to US $57000 a few days ago, but it has fallen back to US $50000 in recent two days. It has paid hundreds of dollars. Of course, these units are all US dollars. Why does it rise rapidly and fall rapidly? Because the value of virtual currency itself is unstable, the market volume largely determines its price{ It is not certain if RRRRR}
will burst. This is because before the price dropped below 40 thousand dollars, it rose to a little more than 41000 dollars. People felt that the market had good news after reaching the end of the year, resulting in a short break in less than a month, and the jumped to 57, faster than the special price. 000 dollars, who can guarantee that there won't be another such news? It's all uncertain
I hope I can help you!
's bitcoin is rising crazily just because central banks are constantly letting money out of the water. Once liquidity is tight, the bubble will burst. according to media reports, good news is coming from the bitcoin market again. In the latest trading day, the price of bitcoin has exceeded US $58000, a new high in recent years. At the same time, in the trading day when bitcoin soared, 140000 bitcoin investors burst their positions, accumulating more than US $1.1 billion. The bitcoin market once again suffered a double day of ice and fire. Optimistic investors continue to increase their positions and bet that the price of bitcoin will soar. On the other hand, many investors have lost their money because of shorting bitcoin