In every bit of nothing, there is something. If you zoom in on empty space and take out all the planets and stars and galaxies, you might expect a pure vacuum, but you’d be wrong. In­stead you would ...

网名为 “加枫糖加奶油吧” 的听众想知道形容词 “consistent、constant” 和 “persistent” 之间有哪些不同。虽然这三个词都可以用来描述人或事物的状态 “始终如一，持续不变”，但在具体形容人的表现、事物的状态时，它们还是有区别的。本期节目讲解这三个 ...

In physics, we have a bunch of constants that are used in models to explain how the world works. These are fixed numbers that we plug into equations along with our variables. For example, the ...

Planck's constant reveals the quantum world's fundamental energy levels. It shows how light and matter exist in discrete units (quanta). This constant defines limits to our knowledge of particle ...