Electro Magnetic Spectrum

Electro Magnetic Spectrum

1. Electromagnetic Radiation

   • travelling through space/matter
   • Radio, Uv, Microwaves, Gamma waves

2. Electromagnetic Waves

   • Transmit from one place to another
   • Move as transverse waves
   • Produced artifically or naturally

3. Types of Waves

   • Radio
     • Low energy wave
     • Communicate long distances
     • bend around Earth's surface
   • Microwave
     • Used in radar and communication systems
     • Shorter microwaves used for cooking
   • Infrared Waves
     • Just below visible red light
     • Remote controls, Video recorders

4. Visible Spectrum

   • Consists of different colours
   • Essential for most life on Earth
   • Photosynthesis
   • Types of Light
     • UV Light
       • Radiation with higher frequency than violet
       • Produced by Sun
       • Helps human body produce Vitamin D
     • X Rays
       • Carry a lot of energy
       • High Frequency Waves
       • Fast moving electrons give up their energy quickly
     • Gamma Rays
       • More energy than X rays
       • Used to kill cancer cells
       • One Hundreth Billion of a metre

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