Interference (P5)

HideShow resource information
  • Created by: caits
  • Created on: 13-04-14 17:02

Interference happens when two waves overlap. 

Constructive Interference:

Reinforcement of waves - when they arrive in phase they reinforce each other to give a wave of greater amplitude. 

(http://www.bbc.co.uk/schools/gcsebitesize/science/images/add_ocr_con_interference.gif)

Destructive Interference:

Cancelation of waves - when they arrive out of phase they cancel out

(http://www.bbc.co.uk/schools/gcsebitesize/science/images/add_ocr_des_interference.gif)

Sources of light need to be coherent. This means they emit light of the same frequency/colour (monochromatic) same amlitude, in phase. 

Path Difference:

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Waves resources »