lecture notes (for MT2)

lecture notes (for MT2) - 5­The cooling universe and the...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 5­The cooling universe and the formation of Nuclei 04:34 ­universe was once hot and dense ­at high densities and temp, collisions are so energetic that bonds that tie the electrons to nucleus are broken by typical collisions; elements are “ionized” with nuclei and e­ moving independently ­“weak interactions” allow conversions btw protons and neutrons • at high temp, equal # protons and neutrons • as temp dropped, weak interactions started favoring protons over neutrons and fraction of protons started to increase 04:34 04:34 ...
View Full Document

Page1 / 3

lecture notes (for MT2) - 5­The cooling universe and the...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online