Atoms are the basic units of matter. Everything in the universe apart from energy is made of matter therefore atoms make up everything in the universe, according toNorthwestern University. The term "atom" comes from the Greek word for indivisible, because it was once thought that atoms were ...
原文: It is harder to crack a prejudice than an atom. * 唯一比无知更危险的是傲慢。 原文: The only thing more dangerous than ignorance is arrogance. * 软弱的人寻求复仇,坚强的人选择原谅,聪明的人则会无视。 原文: Weak people revenge. Strong people forgive, Intelligent people ignore. * 真正...
Strings are so tiny, it's hard to comprehend. If an atom were enlarged to the size of the Earth, a string would only be the size of a tree. You'll need a pretty powerful microscope to get that far. In other words, a string is a millionth of a billionth of a billionth of a bi...
根据第四段Itisnaturalbutwrongtovisualizethesingularityas a kindofpackedspothangingin a dark,boundlessvoid (虚空).Thereisnospace,nodarkness.Thesingularityhasno "around" aroundit.Wecan'tevenaskhowlongithasbeenthere-whetherithasjustlatelyexplodedintobeing,like a goodidea,orwhetherithasbeenthereforever,...
Learn about atoms, the fundamental unit of matter in the universe. Discover the different parts of an atom, such as the nucleus, proton, neutron, and electrons. Also, explore atomic bonding, the way atoms join together to form molecules. ...
Quantum mechanics (量子力学) is a branch of science that studies the smallest particles (粒子) in the universe, like atoms (原子) and even smaller things. It might sound super complex, but let’s break it down in simple language. Imagine you have a small particle, like an atom. In the...
Did you know that everything in the universe is made of matter, and all atoms are pieces of matter? So, anything you can touch is made of atoms, even your body. You can learn all about atoms in chemistry. What Is an Atom in Chemistry?
During the seventies, however, he began to evolve a system of ideas about both the nature of matter and the nature of the universe which diverged increasingly from the general consensus. In his later years, therefore, he was to find himself increasingly isolated, although, being the man he ...
How did the mass of the universe come into being? What two basic groups of objects are thought to make up dark matter? Why is there far more matter than antimatter in the observable universe? What is a black hole? If the space inside an atom is not a vacuum, then what is it?
About 14 to 15 billion years ago, something about the size of an atom suddenly started expanding dramatically. Out near the edge of the universe, there is still Cosmic Microwave Background, which is the heat left over from the Big Bang. Today the universe is still expanding in a process ...