Fusion (2)

“Strong nuclear force” – only acts when protons/neutrons are VERY close together
“Electrostatic repulsion” – positive charges repel
IF you can overcome the repulsion and get 2 protons close enough, then they will STAY together (details deferred)
H ion = 1 proton, 4H = 4p
He ion = 2 p + 2 n
FUSION: 4H  He + ENERGY!
Why is energy released?

“Strong nuclear force” – only acts when protons/neutrons are VERY close together