When building an atom, pay close attention to the particles' electrical charges. Protons have a charge of +1. Electrons have a charge of -1. Neutrons are neutral, as its name implies. A stable atom ...

Having good neighbors can be very valuable—even in the atomic world. A team of Amsterdam physicists was able to determine an ...

Atoms are very small. They have a radius of around 1 × 10-10 metres.

"This is maybe the first direct evidence that we've preserved the proto-Earth materials." Scientists have identified what may be the first direct evidence of material left over from the "proto-Earth," ...

An individual retirement account, commonly known as an IRA, is a simple, tax-advantaged way to save money for retirement. There is a range of different types of IRAs (and strategies that come with ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

There are a number of different nuclear fusion reactions happening in the Sun. The simplest is when four hydrogen nuclei become one helium nuclei.

你有没有想过，为什么我们身边的物质能保持稳定？石头不会突然消散，水也不会无缘无故变成其他物质——这背后，是微观世界的电子正遵循着一套严格的“秩序规则”。想象一下，如果原子世界没有规则，电子们可以随意挤在同一个位置、拥有完全相同的状态，我们的宇宙将会怎样？元素周期表将不复存在，化学反应会陷入混乱，构成我们世界的一切物质都将崩溃。20世纪初，一位年轻物理学家为原 ...