CHM 111 Lecture Notes - Lecture 4: Organofluorine Chemistry, Photon, Ozone Layer
21 Apr 2016
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Document Summary
Light is like the steps of a staircase, there are no partial steps and it"s not continuous. Frequency and wavelength are inversely proportional of one another. Definitions: wavelength, frequency, speed of light, photons. All waves travel at the same speed but differ in wavelength and frequency. Continuum that ranges from the short (high freq. ) X-rays and gamma rays to long (low freq. ) radio waves. It has the highest energy, energy can be used for destructive purposes. Uv-b most harmful because it has the highest energy that can affect us. Sunscreen bottle should say; protects us against uv-a and uv-b. Sun bombards earth with photons living things absorb these photons. Ir rays: make molecules move, rotate, and vibrate. Uv rays: have enough energy to break bonds: in living things, such changes disrupt cells and create potential for genetic defects and cancer.
