GSCE - Physics

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  • Created by: pattey_
  • Created on: 29-04-15 12:07
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  • Refracting
    • Telescopes
      • Reflecting
        • Curved mirror gathers light
          • The smaller mirror infront of the bigger one reflects light making an image
            • Image is magnified by eyepiece lens
      • Physics
        • Waves types
          • Longitudinal
            • Vibrate along the same way as the wave
            • P - waves
            • E.G. Sound, Ultrasound
          • Transverse
            • S - waves
            • E.G. Light, EM spectrum
            • Vibrate at 90' to the direction of the wave
              • Vibrate from side to side
        • Reflection and Refraction
          • Reflection
            • Light reflected because of change in density
          • Refraction
            • Light passing at an angle, changes direction and speed in a different material
              • Less dense = faster
              • More dense = slower
    • Objective lens brings rays of light from a distant object to a point
      • Image is magnified by eyepiece lens
  • Reflection and Refraction
    • Reflection
      • Light reflected because of change in density
    • Refraction
      • Light passing at an angle, changes direction and speed in a different material
        • Less dense = faster
        • More dense = slower
  • Microwaves
    • Dangers of the EM
      • Infra-red
        • Too much exposure causes skin burns
      • UV
        • Damage skin cells causing burns
          • Skin cancer
          • Damage eyesight
      • X-rays/ Gamma rays
        • Cell mutations / destruction
          • Can lead to cancer
      • Physics
        • Waves types
          • Longitudinal
            • Vibrate along the same way as the wave
            • P - waves
            • E.G. Sound, Ultrasound
          • Transverse
            • S - waves
            • E.G. Light, EM spectrum
            • Vibrate at 90' to the direction of the wave
              • Vibrate from side to side
    • Heat human body cells

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