Diffraction and Interference
Diffraction effects
• at an obstacle
• at a slit
Diffraction and all you need to know about it
http://www.acoustics.salford.ac.uk/feschools/waves/diffract.htm
http://www.acoustics.salford.ac.uk/feschools/waves/diffract3.php
Interference of 2 sources, go slowly through the page, go from left ot right ...... read as you go
http://vnatsci.ltu.edu/s_schneider/physlets/main/rippletank.shtml
Constructive and Destructive interference ish kinda ... mayve
Basic but very good idea of constructive and destructive interference
http://physics.info/interference/
if you set the speeds to be equal then you will see Standing interference between two waves
http://www.falstad.com/dispersion/
Look at this wonderful explanation of Interference
http://www.acoustics.salford.ac.uk/feschools/waves/super.htm
diffraction at a single slit
http://www.walter-fendt.de/ph14e/singleslit.htm
with reference to significance of
the wavelength.
Nodes on a plate
Suitable method of demonstrating the wave nature of light.
http://vnatsci.ltu.edu/s_schneider/physlets/main/diff_grating.shtml
Appropriate calculations.
Interference colours
• petrol film,
http://vnatsci.ltu.edu/s_schneider/physlets/main/thinfilm.shtml
Lasers are powerful due to constant constructive interference
Interference of 2 sources
http://www.walter-fendt.de/ph14e/interference.htm
Double slit interference http://www.walter-fendt.de/ph14e/doubleslit.htm
BEaTs from wally
Brilliant Beats set up here
http://vnatsci.ltu.edu/s_schneider/physlets/main/beats.shtml
GO To Audacity and set them up