What is quantum? What does it have to do with protons and atoms?

1 and quantum are important concepts in modern physics. It was first proposed by German physicist M Planck in 1900. He assumed that the radiation energy in blackbody radiation is discontinuous and can only be an integer multiple of the basic unit of energy, thus explaining the experimental phenomenon of blackbody radiation well.

2. Proton is a kind of band.

1.6

×

10- 19 coulombs (c) positively charged subatomic particles with a diameter of about.

1.6~ 1.7× 10? 15m

The mass is 938 million electron volts /c? (MeV/c？ ), namely1.672621637 (83) ×10-27kg, which is about 1836.5 times of the electronic mass (the electronic mass is 9.109382/kloc-). Protons belong to a heavy subclass and consist of two upper quarks and a lower quark under strong interaction through gluons. The number of protons in the nucleus determines its chemical properties and which chemical element it belongs to.

3. Atoms refer to the basic particles of inseparable chemical reactions, and atoms are inseparable in chemical reactions. But it can be divided in physical state. An atom consists of a nucleus and electrons moving around it. Atoms constitute the smallest unit of general matter and are called elements. There are 1 19 known elements.

So it has a nuclear structure.

Quantum is a relatively broad concept, which refers to all kinds of particles studied by quantum mechanics, including protons, neutrons and electrons.