PHY202H1 Lecture Notes - Lecture 7: Electromagnetic Spectrum, Quantum Mechanics, Refraction
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Phy202 week 7 (ray guns and light sabers)2017-10-30 8:10:00 pm. As long as the object is moving, the direction is changing. According to maxwell"s theory, accelerating objects will emit electromagnetic waves. The visible part of the electromagnetic spectrum consists of the colours; red, orange, yellow, green, blue, violet (roygbv). Smaller wavelength is associated with blue and violet, larger wavelength is associated with red and orange. They are the components of white light that we see. A spectrum is a list of the wavelengths of frequencies in a sample of radiation. The spectrum for the light from a gas of atoms consists of specific wavelengths. Quantum mechanics: atoms are described by quantum states. The states are labelled by an integer n (n=1,2,3,,) and a corresponding energy en (e1, e2, e3, . ) Transitions between the quantum states of an atom can result in the production of a photon, which is a discrete unit of electromagnetic radiation. 1.
