astronomy 3.3 notes

astronomy 3.3 notes - Lecture 3.3 Light and Matter Matter...

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Matter Basics The number is written as a left superscript and is basically equal to the number of protons and neutrons. The number is written as a left subscript and is equal to the number of protons. It is redundant with the symbol because the symbol also tells how many protons there are (by definition). are atoms that have the same number of protons but different number of neutrons. are atoms with a different number of electrons than protons. are a set of atoms which are tightly bound together. As a notation CI means Carbon. CII means singly ionized Carbon. CIII means doubly ionized Carbon. This notation is most common in astronomical circles. It is not a notation used by all fields (like Chemistry). Atoms are mostly space. Four Fundamental Forces 1. is the force that all masses exert on each other. Written as an equation it is 2. is the force that charges exert on each other. Written as an equation is is: 3. is the force that keeps the nucleus together. It is very short ranged.
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This note was uploaded on 04/18/2008 for the course ASTRO 103 taught by Professor Dacis during the Spring '08 term at UNL.

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astronomy 3.3 notes - Lecture 3.3 Light and Matter Matter...

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