light

• Electromagnetic radiation is displayed as a Transverse wave.

  the Shorter the wavelength, the more energy it carries
• 7 types of waves to know:

  Gamma rays

  x-rays

  UV rays

  Visible light

  Infrared rays

  Radar

  Radiowaves
• what is the spectrum of light we can see?

  visible light
• gamma rays have the highest frequency and radiowaves have a lower frequency
• vis light: violent= high energy= short wavelength

  red= low energy= long wavelength
• infrared>micro>radio

  gamma>xray>UV
• beyond red

  wavelength increases and the energy/frequency decreases
• beyond violet

  wavelength decreases and the energy/frequency increases
• infrared

  in electronic devices
• microwaves

  12 cm wavelength

  radiates water molecules in door and rotates. this causes friction and heats up the fiod
• radiowaves

  long term exposure can damage cells
• x rays

  between 0.01 nm and 10 nm

  electrons stop when they hit a metal target
• gamma rays

  very high energy

  emitted from sun explosion

  destroys cells (cancer, bacteria etc)
• low energy= cell growth

  high energy= cell destruction