The rarest substance in the universe is likely quark-gluon plasma or something like it. Other extremely rare substances include...
smium comes in seven stable isotopes, and among them osmium-184 is the rarest at 0.02%. That times the element’s 1.8 parts per billion equals about a half part per trillion. But as mentioned above, osmium’s not the nicest stuff to deal with. For a far more serviceable candidate we ...
a世界上用的最普通的名词是朋友,但是最难得的也是朋友。 In the world uses the ordinariest noun is a friend, but rarest also is the friend.[translate] a井底几乎没有水了 The bottom of the well did not have the water nearly[translate] ...
Atoms consist of three types of subatomic particle: protons, neutrons and electrons. The identity of an atom is determined by its proton number or atomic number. For example, any atom having 6 protons is classed as carbon. Atoms are neutral entities, so they always have equal numbers of posi...
semiprecious stonesand minerals. In fact, there are more than 5,000 different types of minerals, which researchers think is 10 times as many as anywhere else in the solar system. And, therarest mineral on the listis kyawthuite because only one natural sample has ever been found, so far....
An atom smasher is a particle accelerator, a device that accelerates elementary particles into each other to probe their inner...
Generally, the rarer a card is, the more valuable it is likely to be. There are four levels of rarity in Magic: The Gathering: common, uncommon, rare, and mythic rare. Mythic rare cards are the rarest and most valuable. Then go rare cards, uncommon cards, and finally, common cards. ...
Human Body What Is the Rarest Blood Type in the World? Medicine How Plasma Donation Works Human Body How Your Immune System Works Diseases & Conditions Is it possible to be allergic to your own blood? Diseases & Conditions How Allergies Work Diseases & Conditions Allergies and Immune System...
Part of the reason is that rare earth elements can bechemically difficult to separate from each otherto get a pure substance. The rarest rare earth element, thulium. Credit:Jurii,CC BY 4. What are rare earth elements useful for? In the last half of the 20th century, europium, with atom...
Pressing on to the top of the island we called at the Hebridean Jewellery where we had soup, bought a Celtic silver pendant, and had a close encounter with a corncrake in the car park, one of the rarest of British birds, now almost confined to the Hebridean islands. Crossing the causewa...