Lec12 - Assignments For Monday, 03 Oct: Do online Exercise...

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Unformatted text preview: Assignments For Monday, 03 Oct: Do online Exercise 07 ("Light & Spectroscopy" tutorial) Atom nucleus electron e- proton neutron p + n Electron Orbits Electrons can gain or lose energy while they orbit the nucleus. When electrons have the lowest energy possible, we say the atom is in the ground state . When electrons have more energy than this, we say the atom is in an excited state . When electrons gain enough energy to escape the nucleus, we say the atom is ionized . Electron Energy Levels But, electrons can not have just any energy while orbiting the nucleus. Only certain energy values are allowed. Electrons may only gain or lose certain specific amounts of energy. Each element (atom and ion) has its own distinctive set or pattern of energy levels. This diagram depicts the energy levels of Hydrogen. Light: The Cosmic Messenger Power power : the rate at which energy is used/emitted It is measured in units called watts ....
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Lec12 - Assignments For Monday, 03 Oct: Do online Exercise...

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