What is an atom, and why does it matter?
How do protons, neutrons, and electrons differ? Use hydrogen to distinguish elements, isotopes, and ions, and understand what changes in stellar matter.
Tag archive
#plasma
Articles: 2
What is a star, and what is it made of?
Why does the Sun’s gas neither disperse nor shrink without limit? Separate hydrogen from plasma and understand pressure, gravity and light without an ordinary flame.