GSCE - Physics - Mindmap in GCSE Physics

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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GSCE - Physics

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