Blue miner
Publish: 2021-04-18 21:39:52
1.
25000 mining troops in Sichuan: a flood cost hundreds of millions, most afraid of power failure and loneliness
these computing power are scattered along the Da River, a tributary of the Minjiang River. They inlge in the night of Dalate Banner in Ordos, and sleep soundly in a small city in Yili Kazakh Autonomous Prefecture of Xinjiang
today, bitcoin's total network computing power has reached about 30 billion hash collisions per second, equivalent to about 600 tianhe-2 supercomputers, and it is still growing at a high speed. " Wu Jihan, the founder of bitcontinent, wrote in the beauty of computing power
he preached a set of infinitely beautiful "computational aesthetics", but behind the aesthetics is the cruel computational world and interests. Mining is moving towards instrialization step by step and becoming a game of capital
at this time, decentralized mining machines and pools began to appear. They called themselves revolutionaries and wanted to change the extremely monopolized bitcoin world
"cloud computing power mining" is one of them
their way of playing is to establish a number of distributed mines and provide computing power leasing services with tens of thousands of real mining machines
"the current computing power is too concentrated, and some decentralized play methods are difficult to change the current pattern and ecology." Li Ke said
but the essence of blockchain is decentralization. The miners still have the belief that eventually the mining instry will be broken by the decentralized mining pool
this may be the only belief that keeps them going
how long will it take
"5-10 years, slowly nibbling at the giant's territory." Li Ke said
but will giants wait for the revolution? Will they fight back
the battle of computing power and the spark of revolution have just been ignited
source; Sina Technology
2. It is the trend of the times for digital currency to replace paper money, which is the trend and necessity of social development. But at this stage, when digital currency comes out, paper money will not disappear. Although some countries in Eastern Europe are trying to de paper money, it is not fully realized. Moreover, these countries are highly developed countries with small land area and complete infrastructure
in China, the digital currency issued by the central bank will coexist with the paper currency for a long time, until the paper currency is graally replaced by the digital currency. Of course, digital currencies such as bitcoin, Leyte and decent can only exist as a supplement, and cannot become the mainstream.
in China, the digital currency issued by the central bank will coexist with the paper currency for a long time, until the paper currency is graally replaced by the digital currency. Of course, digital currencies such as bitcoin, Leyte and decent can only exist as a supplement, and cannot become the mainstream.
3. 1、 What is GEC environmental coin
2017 was the year when digital currency ICO was the most popular, and it was also the year when return to zero currency was born
in this year, GEC environmental protection coin was born
according to the official publicity materials, GEC environmental coins are designed and issued by the world environmental entrepreneurship foundation, with a total amount of about 8 billion, which is halved every five years
after crawling the source code of the official website of the world environmental entrepreneurship foundation, I found that the basic thing is to the template< br />
The operation page of GEC project is also low< br />
However, this does not affect GEC pyramid schemes at all
the first is to promise "only rise but not fall"<
GEC's external publicity is "0 investment, 0 risk, 0 operating cost, everyone can participate, everyone is the main body, mining machine is exclusive, dig money and own it, with huge profits"
coupled with the fierce currency price increase of GEC in the past three years, the current price of GEC is more than 1300 yuan, with a three-year increase of more than 18000 times, isn't it a bit exciting? It can be said that it is deeply related to human nature< br />
The second is the essential mechanism of MLM< br />
It is obvious that there are two core ways to get more GEC coins:
1
2
as a result, the wheel of MLM has turned. According to the official information disclosure, the number of registered users of GEC platform has already exceeded 2 million<
two or three years ago, why GEC is still alive
before that, there were not a lot of funds under the banner of blockchain and mining, such as five element coin, magic root coin, etc., but they would collapse or be cracked by the police in a year<
GEC's issuing organization, the world environmental protection entrepreneurship foundation, was named and exposed by the official media Beijing business daily in April 2019, and pointed out a series of problems, such as high income, head pulling, suspected pyramid selling, illegal ICO and so on. On June 12, it was also listed in the strike list of non legal social organizations by Zhejiang civil affairs department< br />
On April 14 this year, a netizen asked the relevant regulatory authorities whether GEC environmental protection coin is illegal pyramid selling in the voice of red net people. After investigation, longhui County market supervision and administration bureau gave a clear conclusion that the operation mode of "GEC environmental protection coin" is suspected of pyramid selling< br />
See here, a big doubt surged into my heart, why is the qualitative pyramid scheme GEC after three years still alive well?
2017 was the year when digital currency ICO was the most popular, and it was also the year when return to zero currency was born
in this year, GEC environmental protection coin was born
according to the official publicity materials, GEC environmental coins are designed and issued by the world environmental entrepreneurship foundation, with a total amount of about 8 billion, which is halved every five years
after crawling the source code of the official website of the world environmental entrepreneurship foundation, I found that the basic thing is to the template< br />
The operation page of GEC project is also low< br />
However, this does not affect GEC pyramid schemes at all
the first is to promise "only rise but not fall"<
GEC's external publicity is "0 investment, 0 risk, 0 operating cost, everyone can participate, everyone is the main body, mining machine is exclusive, dig money and own it, with huge profits"
coupled with the fierce currency price increase of GEC in the past three years, the current price of GEC is more than 1300 yuan, with a three-year increase of more than 18000 times, isn't it a bit exciting? It can be said that it is deeply related to human nature< br />
The second is the essential mechanism of MLM< br />
It is obvious that there are two core ways to get more GEC coins:
1
2
as a result, the wheel of MLM has turned. According to the official information disclosure, the number of registered users of GEC platform has already exceeded 2 million<
two or three years ago, why GEC is still alive
before that, there were not a lot of funds under the banner of blockchain and mining, such as five element coin, magic root coin, etc., but they would collapse or be cracked by the police in a year<
GEC's issuing organization, the world environmental protection entrepreneurship foundation, was named and exposed by the official media Beijing business daily in April 2019, and pointed out a series of problems, such as high income, head pulling, suspected pyramid selling, illegal ICO and so on. On June 12, it was also listed in the strike list of non legal social organizations by Zhejiang civil affairs department< br />
On April 14 this year, a netizen asked the relevant regulatory authorities whether GEC environmental protection coin is illegal pyramid selling in the voice of red net people. After investigation, longhui County market supervision and administration bureau gave a clear conclusion that the operation mode of "GEC environmental protection coin" is suspected of pyramid selling< br />
See here, a big doubt surged into my heart, why is the qualitative pyramid scheme GEC after three years still alive well?
4. First of all, you should be proficient in mining machinery procts, including its working principle, proct use, vulnerable parts, precautions for use, model specifications, etc
secondly, you need to have certain communication skills, so that your sales request is not abrupt and customers are willing to accept it
in the end, you must love sales and interest is the best teacher. Only when you really like this job can you do it well.
secondly, you need to have certain communication skills, so that your sales request is not abrupt and customers are willing to accept it
in the end, you must love sales and interest is the best teacher. Only when you really like this job can you do it well.
5. Edison only went to primary school for three months in his life. His knowledge came from his mother's teaching and self-study. His success should be attributed to his mother's understanding and patient teaching since childhood, which made Edison, who was originally regarded as an incompetent child, become a world-famous "king of invention" when he grew up
Edison was curious about many things since he was a child, and he liked to experiment with them himself until he understood the truth. When he grew up, he devoted himself to research and invention according to his own interests. He set up a laboratory in New Jersey and invented more than 2000 kinds of things in his life, such as electric lamp, telegraph, phonograph, video camera, magnetic separator, crusher and so on. Edison's strong research spirit made him make great contribution to the improvement of human life style
"waste, the biggest waste is to waste time." Edison often said to his assistant“ Life is too short. Think more and do more with less time. "
one day, Edison was working in the laboratory. He handed his assistant an empty glass bulb without a light port and said, "you measure the capacity of the bulb." He bowed his head to work again
after a long time, he asked, "what's the capacity?" He didn't hear the answer. He turned his head and saw his assistant measuring the perimeter and inclination of the bulb with a tape measure. He took the measured number and put it on the table to calculate. He said, "time, time, how do you spend so much time?" Edison came over, picked up the empty light bulb, filled it with water, handed it to his assistant, and said, "pour the water in the measuring glass, and tell me its capacity right away."
the assistant immediately read out the number
Edison said, "what an easy way to measure. It's accurate and time-saving. Why can't you think of it? Is it not a waste of time? "
the assistant blushed
Edison murmured: "life is too short, too short. Save time and do more things!"< Before he became famous, Edison was a poor worker. Once, his old friend met him in the street and said with concern, "look, this overcoat on you is not in good condition. You should replace it with a new one."
"do you need it? No one knows me in New York Edison answered with indifference
a few years later, Eddie has become a great inventor< One day, Edison met his friend on the street of New York“ "Oh," exclaimed the friend, "Why are you still wearing this old coat? This time, you need a new one anyway
"do you need it? Everyone here already knows me. " Edison still answered with indifference< When Franklin was 7 years old, alts gave him a lot of money for a holiday. Franklin plans to use this "huge sum" to buy some toys in the store. On the way, he saw a boy blowing his whistle with great air. He was completely fascinated by the whistle at that time, so he exchanged all his money for the boy's whistle. When he got home, Franklin whistled all over the house with great pride, but he disturbed the whole family. When his family knew about the deal, they told him that for the whistle, he had paid four times more than its original price, and let him understand that the extra money could buy more and better things. Ala wants to take my advice
Edison was curious about many things since he was a child, and he liked to experiment with them himself until he understood the truth. When he grew up, he devoted himself to research and invention according to his own interests. He set up a laboratory in New Jersey and invented more than 2000 kinds of things in his life, such as electric lamp, telegraph, phonograph, video camera, magnetic separator, crusher and so on. Edison's strong research spirit made him make great contribution to the improvement of human life style
"waste, the biggest waste is to waste time." Edison often said to his assistant“ Life is too short. Think more and do more with less time. "
one day, Edison was working in the laboratory. He handed his assistant an empty glass bulb without a light port and said, "you measure the capacity of the bulb." He bowed his head to work again
after a long time, he asked, "what's the capacity?" He didn't hear the answer. He turned his head and saw his assistant measuring the perimeter and inclination of the bulb with a tape measure. He took the measured number and put it on the table to calculate. He said, "time, time, how do you spend so much time?" Edison came over, picked up the empty light bulb, filled it with water, handed it to his assistant, and said, "pour the water in the measuring glass, and tell me its capacity right away."
the assistant immediately read out the number
Edison said, "what an easy way to measure. It's accurate and time-saving. Why can't you think of it? Is it not a waste of time? "
the assistant blushed
Edison murmured: "life is too short, too short. Save time and do more things!"< Before he became famous, Edison was a poor worker. Once, his old friend met him in the street and said with concern, "look, this overcoat on you is not in good condition. You should replace it with a new one."
"do you need it? No one knows me in New York Edison answered with indifference
a few years later, Eddie has become a great inventor< One day, Edison met his friend on the street of New York“ "Oh," exclaimed the friend, "Why are you still wearing this old coat? This time, you need a new one anyway
"do you need it? Everyone here already knows me. " Edison still answered with indifference< When Franklin was 7 years old, alts gave him a lot of money for a holiday. Franklin plans to use this "huge sum" to buy some toys in the store. On the way, he saw a boy blowing his whistle with great air. He was completely fascinated by the whistle at that time, so he exchanged all his money for the boy's whistle. When he got home, Franklin whistled all over the house with great pride, but he disturbed the whole family. When his family knew about the deal, they told him that for the whistle, he had paid four times more than its original price, and let him understand that the extra money could buy more and better things. Ala wants to take my advice
6. Yes
Marie Curie is a French Polish physicist and chemist< In 1898, French physicist Antoine Henri Becquerel discovered that uranium bearing minerals can emit a mysterious ray, but he failed to reveal the mystery of this ray. Mary and her husband, Pierre Curie, worked together on the radiation. Under extremely difficult conditions, they separated and analyzed pitchblende, and finally found two new elements in July and December 1898
in memory of her motherland Poland, she named one element polonium and the other radium, which means "radioactive substance". In order to prepare pure radium compound, Marie cui7e (1867-1934) spent four years to extract 10 mg radium chloride from tons of pitchblende slag, and the relative atomic mass of radium was 225. This simple figure embodies the painstaking efforts and sweat of the Curies< In June 1903, Madame Curie received her doctor's degree in physics from the University of Paris with her doctoral dissertation in the study of radioactive substances. In November of the same year, the Curies were awarded the David gold medal by the Royal Society. In December, they won the 1903 Nobel Prize in physics with becoller< In 1906, Pierre Curie died in a car accident. This heavy blow did not make her give up her persistent pursuit. She enred her grief and redoubled her efforts to complete their beloved scientific cause. She continued her husband's lecture at the University of Paris and became the first female professor of the University. In 1910, her famous book on radioactivity was published. With Mou, she worked with others to analyze pure metal radium and determine its properties. She also measured the half lives of oxygen and other elements and published a series of important works on radioactivity. In view of the above achievements, she won the Nobel Prize in chemistry in 1911 and became the first great scientist to win the Nobel Prize twice in history<
the founder of radiation science, who has experienced the joys and sorrows of science, died of malignant anemia (leukemia) on July 4, 1934 e to years of hard work. She has dedicated her glorious life to the scientific cause of mankind.
Marie Curie is a French Polish physicist and chemist< In 1898, French physicist Antoine Henri Becquerel discovered that uranium bearing minerals can emit a mysterious ray, but he failed to reveal the mystery of this ray. Mary and her husband, Pierre Curie, worked together on the radiation. Under extremely difficult conditions, they separated and analyzed pitchblende, and finally found two new elements in July and December 1898
in memory of her motherland Poland, she named one element polonium and the other radium, which means "radioactive substance". In order to prepare pure radium compound, Marie cui7e (1867-1934) spent four years to extract 10 mg radium chloride from tons of pitchblende slag, and the relative atomic mass of radium was 225. This simple figure embodies the painstaking efforts and sweat of the Curies< In June 1903, Madame Curie received her doctor's degree in physics from the University of Paris with her doctoral dissertation in the study of radioactive substances. In November of the same year, the Curies were awarded the David gold medal by the Royal Society. In December, they won the 1903 Nobel Prize in physics with becoller< In 1906, Pierre Curie died in a car accident. This heavy blow did not make her give up her persistent pursuit. She enred her grief and redoubled her efforts to complete their beloved scientific cause. She continued her husband's lecture at the University of Paris and became the first female professor of the University. In 1910, her famous book on radioactivity was published. With Mou, she worked with others to analyze pure metal radium and determine its properties. She also measured the half lives of oxygen and other elements and published a series of important works on radioactivity. In view of the above achievements, she won the Nobel Prize in chemistry in 1911 and became the first great scientist to win the Nobel Prize twice in history<
the founder of radiation science, who has experienced the joys and sorrows of science, died of malignant anemia (leukemia) on July 4, 1934 e to years of hard work. She has dedicated her glorious life to the scientific cause of mankind.
7.
Edison, the great inventor who influenced the world. He can't read until he is 12 years old. He only stayed in a regular school for three months. His math and reading and writing skills are very poor, and he can't concentrate. He is a trouble boy. He was dyslexic because of hearing loss as a child. All his life, he had difficulty in writing and spelling
Edison's earliest interest was in chemistry. He collected about 200 bottles and saved every penny to buy chemicals and put them in bottles. At the age of 12, he went to the train to sell newspapers to earn money In 1861, the civil war broke out in the United States. Edison used the convenience of the train to run a tabloid to convey the war situation and information along the way. He is a journalist, editor, typesetter, proofreader, printer and distributor. The tabloids were popular, and he gained talent, knowledge and experience from his intense work. He also earned a lot of money to continue his chemical experiments But unfortunately, when he was doing an experiment on the train, the train suddenly bumped, causing a piece of phosphorus to fall on the board and cause combustion. The conctor came to put out the fire and slapped him in the face, deafening his left ear. He was driven off the train when Edison was only 16 years old The frustration didn't make Edison lose heart. He fell in love with telegraph again. After repeated research, he invented an automatic electric recorder in 1868, which was his first invention. Later he invented two new types of telegraph. In 1877, he invented the carbon telephone transmitter, which made the original telephone sound clearer; In addition, he invented the phonograph. People call him "the magician" Edison died on October 18, 1931 at the age of 82. However, so far no one has been able to break his record of holding 1093 invention patents. People call him the king of invention
extended materials:
main achievements
first, phonograph
in 1877, Edison found that the diaphragm in the telephone transmitter would vibrate with the sound of the voice, so he took a short needle to do the experiment, and got a lot of inspiration from it. Edison asked his assistant to make a "strange machine" composed of a large cylinder, a crank, a receiver and a membrane plate
after it was made, Edison took out a piece of tin foil, rolled it on a metal cylinder with spiral grooves, and let one end of the needle gently rub the tin foil to rotate, and the other end was connected with the receiver. Then Edison shook the crank, sang to the receiver, put the needle back to its original place, and then shook the crank, and the machine played back Edison's voice
In December, Edison publicly displayed this "tin foil gramophone", which caused a sensation all over the world The first inventor of electric light was not Edison, but Edison improved electric light. As early as 1801, a British chemist named Humphrey David used platinum wire to electrify light in his laboratory In October 1879, Edison finally successfully made the carbon fiber filament incandescent lamp, which was called "carbon cotton filament incandescent lamp", and then put into mass proction, and set up a company to set up the power station and transmission network and other corresponding infrastructure, which soon made the electric lamp widely used in the United States During theperiod, he constantly improved his technology, and finally decided to use tungsten filament as the filament, which is called "tungsten filament lamp", and it has been finalized and used so far, so Edison has become a recognized inventor of electric lamp
Thirdly, in the aspect of film, there are1, motion picture camera
2, motion picture projector
3 and sound movie
8. If it's the water discharged from the mine, OPP's suggestion is not to drink it. The mine water contains a lot of sulfides. If the water quality is blue, it can't be drunk, Even if the mine drainage water is clear, it can not be drunk, because the discharged water only reaches the index of not polluting the environment, but the content of various chemical substances is not suitable for human drinking. Of course, irrigation and aquaculture are also not good.
9. Due to its special structure, graphite has the following special properties:
1) high temperature resistant type: the melting point of graphite is 3850 ± The weight loss and coefficient of thermal expansion are very small even after ultra-high temperature arc burning. The strength of graphite increases with the increase of temperature. At 2000 ℃, the strength of graphite is doubled
2) conctivity and thermal conctivity: the conctivity of graphite is 100 times higher than that of ordinary non-metallic minerals. The thermal conctivity exceeds that of steel, iron, lead and other metal materials. The thermal conctivity decreases with the increase of temperature. Even at very high temperature, graphite becomes an insulator
3) lubricity: the lubricity of graphite depends on the size of graphite flakes. The larger the flakes are, the smaller the friction coefficient is, and the better the lubricity is
4) chemical stability: graphite has good chemical stability at room temperature, and is resistant to acid, alkali and organic solvent corrosion
5) plasticity: graphite has good toughness and can be made into very thin sheets every year
6) thermal shock resistance: when graphite is used at room temperature, it can withstand the drastic change of temperature without damage. When the temperature changes suddenly, the volume of graphite does not change much and there will be no cracks. Physical and chemical properties of diamond
(1) chemical composition: C. It often contains Cr, Mn, Ti, Mg, Al, CA, Si, N, B, etc
(2) color: light yellow, light yellow brown, light yellow green, brown, colorless (light yellow white, white, excellent white) occupy a certain number, rose, pink, light blue, green, black, Tan are very rare
(3) transparency: both colorless and light colored diamonds are transparent, and the measured transmittance of white and excellent white diamonds in colorless medium is more than 95%. The transparency of dark colored diamonds and ground glass etched diamonds decreases and appears translucent. The increase of inclusion content in diamonds also affects the transparency
(4) hardness: Mohr 10, new Mohr 15, microhardness 10000kg / mm2, microhardness is 1000 times higher than that of quartz and 150 times higher than that of corunm. The hardness of diamond is directional. The hardness of octahedron is higher than that of rhombic dodecahedron, and the hardness of rhombic dodecahedron is higher than that of hexahedron
(5) density: the density of diamond is closely related to the inclusion in diamond crystal. The density of pure diamond with colorless and transparent substance is 3.52g/cm3, and the density with inclusion is 3.44 ~ 3.53g/cm3
(6) polarizability: most diamonds show inhomogeneity under polarized light. Diamond belongs to equiaxed crystal system, which should be homogeneous in theory. However, diamond is formed in the geological body with pressure change, and the internal structure of diamond crystal is locally dislocated e to stress effect, so it shows inhomogeneous inhomogeneity, which is manifested in the inconsistency of extinction, For the first grade gray with very low interference color, few uniaxial crystal interference images can be measured
(7) refractive index (n): 2.4493 λ four hundred and thirty-six μ m)、2.4354( λ four hundred and eighty-six μ m)、2.4237( λ five hundred and forty-six μ m)、2.4176( λ five hundred and eighty-nine μ m)、2.4103( λ six hundred and fifty-six μ m)
(8) reflectance (R): 5.308% in oil and 17.29% in air
(9) lipophilic and hydrophobic: diamond is a kind of lipophilic and hydrophobic mineral. After rubbing oil on the crystal surface, halo can be seen. Oil droplets on the crystal surface diffuse immediately, while water droplets do not diffuse. Therefore, diamond can be separated by oil separation in mineral processing
(10) electromagnetism: diamond is a non-magnetic heavy mineral (P & gt; 2.9) therefore, electromagnetic separation (medium magnetic and weak magnetic) cannot be used in mineral processing
(11) conctivity: most diamonds are dielectrics, resistivity: 5 × one hundred and four Ω. Cm, type I and type II (IIA) diamonds are insulators, and the specific resistance is & gt; one thousand and sixteen Ω. The I-type (H B) diamond is a p-type semiconctor with a specific resistance of 10 ~ 103 cm Ω. When the temperature rises to 600 ℃ or drops to - 150 ℃, the resistance increases
(12) stiffness and strength: diamond has a great elastic molus, which is the highest grinding material in nature, with an elastic molus of 90000kg / mm. Because of its low friction coefficient and high antiwear ability, ball mill and cone mill are used to separate diamond. But diamond is very brittle and can't bear the impact of positive external force
(13) melting point: the melting point of diamond is 4000 ℃, the combustion temperature in air is 850 ~ 1000 ℃, and the combustion temperature in pure oxygen is 720 ~ 800 ℃
(14) luminescence: Diamond proces sky blue and light green fluorescence under X-ray, light yellow and sky blue fluorescence under long wave and short wave ultraviolet, but a considerable part of it does not emit light. Some in the sun after exposure to light blue phosphorescence. Blue and green fluorescence were observed under cathode ray
(15) gloss: it belongs to the standard diamond luster. Due to the melting effect and ground glass image, it can appear grease luster or gloss weakening
(16) dispersion: the dispersion of diamond is 0.044. Under the irradiation of natural light, it has a certain incidence angle to proce the decomposed spectral color on the diamond surface, commonly known as fire color
(17) thermal conctivity: diamond has good thermal conctivity, and the thermal conctivity is as high as 669.89 ~ 2009.66w / (m)
1) high temperature resistant type: the melting point of graphite is 3850 ± The weight loss and coefficient of thermal expansion are very small even after ultra-high temperature arc burning. The strength of graphite increases with the increase of temperature. At 2000 ℃, the strength of graphite is doubled
2) conctivity and thermal conctivity: the conctivity of graphite is 100 times higher than that of ordinary non-metallic minerals. The thermal conctivity exceeds that of steel, iron, lead and other metal materials. The thermal conctivity decreases with the increase of temperature. Even at very high temperature, graphite becomes an insulator
3) lubricity: the lubricity of graphite depends on the size of graphite flakes. The larger the flakes are, the smaller the friction coefficient is, and the better the lubricity is
4) chemical stability: graphite has good chemical stability at room temperature, and is resistant to acid, alkali and organic solvent corrosion
5) plasticity: graphite has good toughness and can be made into very thin sheets every year
6) thermal shock resistance: when graphite is used at room temperature, it can withstand the drastic change of temperature without damage. When the temperature changes suddenly, the volume of graphite does not change much and there will be no cracks. Physical and chemical properties of diamond
(1) chemical composition: C. It often contains Cr, Mn, Ti, Mg, Al, CA, Si, N, B, etc
(2) color: light yellow, light yellow brown, light yellow green, brown, colorless (light yellow white, white, excellent white) occupy a certain number, rose, pink, light blue, green, black, Tan are very rare
(3) transparency: both colorless and light colored diamonds are transparent, and the measured transmittance of white and excellent white diamonds in colorless medium is more than 95%. The transparency of dark colored diamonds and ground glass etched diamonds decreases and appears translucent. The increase of inclusion content in diamonds also affects the transparency
(4) hardness: Mohr 10, new Mohr 15, microhardness 10000kg / mm2, microhardness is 1000 times higher than that of quartz and 150 times higher than that of corunm. The hardness of diamond is directional. The hardness of octahedron is higher than that of rhombic dodecahedron, and the hardness of rhombic dodecahedron is higher than that of hexahedron
(5) density: the density of diamond is closely related to the inclusion in diamond crystal. The density of pure diamond with colorless and transparent substance is 3.52g/cm3, and the density with inclusion is 3.44 ~ 3.53g/cm3
(6) polarizability: most diamonds show inhomogeneity under polarized light. Diamond belongs to equiaxed crystal system, which should be homogeneous in theory. However, diamond is formed in the geological body with pressure change, and the internal structure of diamond crystal is locally dislocated e to stress effect, so it shows inhomogeneous inhomogeneity, which is manifested in the inconsistency of extinction, For the first grade gray with very low interference color, few uniaxial crystal interference images can be measured
(7) refractive index (n): 2.4493 λ four hundred and thirty-six μ m)、2.4354( λ four hundred and eighty-six μ m)、2.4237( λ five hundred and forty-six μ m)、2.4176( λ five hundred and eighty-nine μ m)、2.4103( λ six hundred and fifty-six μ m)
(8) reflectance (R): 5.308% in oil and 17.29% in air
(9) lipophilic and hydrophobic: diamond is a kind of lipophilic and hydrophobic mineral. After rubbing oil on the crystal surface, halo can be seen. Oil droplets on the crystal surface diffuse immediately, while water droplets do not diffuse. Therefore, diamond can be separated by oil separation in mineral processing
(10) electromagnetism: diamond is a non-magnetic heavy mineral (P & gt; 2.9) therefore, electromagnetic separation (medium magnetic and weak magnetic) cannot be used in mineral processing
(11) conctivity: most diamonds are dielectrics, resistivity: 5 × one hundred and four Ω. Cm, type I and type II (IIA) diamonds are insulators, and the specific resistance is & gt; one thousand and sixteen Ω. The I-type (H B) diamond is a p-type semiconctor with a specific resistance of 10 ~ 103 cm Ω. When the temperature rises to 600 ℃ or drops to - 150 ℃, the resistance increases
(12) stiffness and strength: diamond has a great elastic molus, which is the highest grinding material in nature, with an elastic molus of 90000kg / mm. Because of its low friction coefficient and high antiwear ability, ball mill and cone mill are used to separate diamond. But diamond is very brittle and can't bear the impact of positive external force
(13) melting point: the melting point of diamond is 4000 ℃, the combustion temperature in air is 850 ~ 1000 ℃, and the combustion temperature in pure oxygen is 720 ~ 800 ℃
(14) luminescence: Diamond proces sky blue and light green fluorescence under X-ray, light yellow and sky blue fluorescence under long wave and short wave ultraviolet, but a considerable part of it does not emit light. Some in the sun after exposure to light blue phosphorescence. Blue and green fluorescence were observed under cathode ray
(15) gloss: it belongs to the standard diamond luster. Due to the melting effect and ground glass image, it can appear grease luster or gloss weakening
(16) dispersion: the dispersion of diamond is 0.044. Under the irradiation of natural light, it has a certain incidence angle to proce the decomposed spectral color on the diamond surface, commonly known as fire color
(17) thermal conctivity: diamond has good thermal conctivity, and the thermal conctivity is as high as 669.89 ~ 2009.66w / (m)
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