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Always under extensive constructionUnder, where have you heard that before ?

The following notes are intended for our students following A-Level Modular Physics, Cosmology, UCLES. They are intended as notes to clarify certain aspects of the course. They are not intended to be a replacement for their own notes,or to take the place of standard textbooks.

HTML is not a nice medium for using Greek symbols, so I have substituted some of the standard symbols with appropriate English letters.

3. The Standard Model of the Universe

3.1 Line spectrum

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