Electromagnetic Waves

Electromagnetic Waves

1. Constructive Interference

   • the amplitude increases

2. Destructive Interference

   • the amplitude decreases
   • Completely destructive interference occurs the waves completely cancel each other out.

3. Nodes & Antinodes

4. Doppler Effect

   • While the ambulance is moving away from the man, he is being hit less frequently with sound waves so the sound seems to decrease in volume. As it moves toward the other person, they're being hit more frequently with sound waves so it seems louder

5. Transverse Wave

   • vibrates perpendicular to the medium
     • example: light waves
   • an EM wave is transverse
     • EM waves consist of both electrical and magnetic fields

6. Longitudinal Wave

   • moves the same direction as the medium
     • example: sound waves

7. reflection- wave bounces off an object in its path, change in direction

8. refraction- wave bent and changes speed due to the mediums

9. Diffuse Reflection: rough surface Specular Reflection- smooth surface

   • diffuse example: wall
   • specular example: mirror

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