In the solar spectrum distribution, ultraviolet light accounts for 5% of the total solar energy. Among them, titanium dioxide is the most typical ultraviolet photocatalyst, but its light absorption is limited to the ultraviolet region. Visible light energy accounts for 48% of the solar spectrum. Bismuth tungstate, bismuth molybdate and other visible photocatalysts have also been widely studied.

It is well known that tungsten (W) is the purest metal with the highest melting point in the world (meaning it is the most difficult to melt), and its melting point is 3156.85 Kelvin (3430 ° C). At present, the most refractory material in the world is a powder mixture of bismuth-containing carbides and nitrides, which has a melting point of 4400 Kelvin (4126.85 ° C). This was synthesized a few days ago by Russian Far Eastern Federal University and the Far Eastern Branch of the Russian Academy of Sciences under extreme conditions. This high-temperature functional material will be mainly used in cutting-edge fields such as national defense, aerospace, electronic information, energy, chemical, metallurgical and nuclear industries, and has a good application prospect. According to the news released by the Russian Far Eastern Federal University, the next step in the research is to optimize the synthesis of the material and to study the solid phase transition process. Prior to this, the world's most refractory material was the five-carbon tetrakis (Ta4HfC5), which had a melting point of 4,200 Kelvin (3926.85 ° C).

When it comes to golf, the familiar people can say that the meanings and professional skills of "Birdie", "Eagle" and "Double Eagle" are handy; for the master, they will play a straight one shot. Applying an old saying, that is, for the general, when the "green" battlefield is galloped, the four major slams will be collected. For the above, when the pride is not reduced, after a few years, you can still "laugh". However, what is the relationship between this and the tungsten alloy counterweight? What is the connection between golf clubs and tungsten alloy weights? Do not worry, and listen to the author.

Technology products such as smartphones, electric cars, big-screen TVs, and green energy power generation rely on a range of chemical elements that most people have never heard of. Until the end of the 20th century, people were only curious about these high-tech products. But nowadays, I feel that it is uncomfortable to find out which one is missing. This also reflects from the side that these chemical elements are indispensable. Because, in fact, a single mobile phone contains more than one-third of the elements in the periodic table.