Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
phy131studiof15:lectures:chapter17 [2015/11/02 20:46]
mdawber [Doppler Effect with moving observer and source]
phy131studiof15:lectures:chapter17 [2015/11/03 23:21]
mdawber [Sonic Boom]
Line 200: Line 200:
 ===== Refraction and Diffraction ===== ===== Refraction and Diffraction =====
  
-Here we will only look at refraction and diffraction briefly (we will take a look at them in the ripple tank!), they will be covered in more detail in PHY142 ([[phy142:​lectures:​30|refraction]],​[[phy142:​lectures:​35|diffraction]] )when we look at optics.+Here we will only look at refraction and diffraction briefly (we will take a look at them in the ripple tank!), they will be covered in more detail in PHY132 ​when we look at optics.
    
 Refraction occurs when 2 or 3 dimensional waves pass into a medium where they have a different velocity, when they do this they change their direction. Refraction occurs when 2 or 3 dimensional waves pass into a medium where they have a different velocity, when they do this they change their direction.
Line 290: Line 290:
 When a moving object moves faster than the speed of sound [[http://​upload.wikimedia.org/​wikipedia/​commons/​d/​d1/​Dopplereffectsourcemovingrightatmach1.0.gif|the wavefronts pile up]], creating a shock wave, which is heard as a sonic boom. When a moving object moves faster than the speed of sound [[http://​upload.wikimedia.org/​wikipedia/​commons/​d/​d1/​Dopplereffectsourcemovingrightatmach1.0.gif|the wavefronts pile up]], creating a shock wave, which is heard as a sonic boom.
  
-A video of a [[http://​www.aussiewhipmaker.com/​FaveCracksMovie.htm|sonic boom]], and [[http://​www.youtube.com/​watch?​v=SsDEfu8s1Lw|another one]].+A video of a [[https://​www.aussiewhipmaker.com/​videos-guides/​|sonic boom]], and [[http://​www.youtube.com/​watch?​v=SsDEfu8s1Lw|another one]].
  
 More on sonic booms on [[http://​en.wikipedia.org/​wiki/​Sonic_boom|wikipedia]]. More on sonic booms on [[http://​en.wikipedia.org/​wiki/​Sonic_boom|wikipedia]].
phy131studiof15/lectures/chapter17.txt ยท Last modified: 2015/11/03 23:21 by mdawber
CC Attribution-Noncommercial-Share Alike 3.0 Unported
Driven by DokuWiki