PHYSICS

PHYSICS

1. WAVES

   • infer red
   • radio waves
   • X-ray
   • visible light
   • microwaves
   • gamma rays
   • ultra violet

2. VOCAB

   • APMLITUDE
     • maximum height from middle
   • Wave-length
     • shortest distance between one point and the same point on the next wave
   • Frequency
     • number of waves per second

3. MICROWAVES

   • uses eletromanetic waves
   • the particals move to produce (KE)
     • to produce heat
   • the energy is absorbed by water/fat molecules
   • cooked by conduction
   • cooked with infer red

4. IR COOKING

   • energy is absorbed by all molecules
   • uses electromagnetic waves
   • slower, less efficient
   • uses conduction

5. LASERS AND COMMUNICATION

   • used in CD players
   • communication with optic cables
   • laser communication uses morce code
   • pulses of light are a digital signal
   • laser focuses on bumbs