Progressive waves
<ul><li>“ Looking out into the immensity of the universe, we stand at the shores of the cosmic ocean. Yet our earthly seas...
Waves   <ul><li>A basic concept of physics </li></ul><ul><li>Progressive waves </li></ul><ul><li>Describing waves </li></u...
Graphical representation <ul><li>Displacement - time graph  </li></ul><ul><ul><ul><li>Transverse mechanical wave </li></ul...
 
Wavelength, frequency and wave speed <ul><li>A wave source vibrates at  f  vibrations per second  particles of transmitti...
Phase
<ul><li>A and B: in phase </li></ul><ul><li>B and C: in antiphase </li></ul><ul><li>Phase difference   </li></ul><ul><li>...
Path difference
<ul><li>Waves emitted  from a and B in phase </li></ul><ul><li>At P: relative phase depends on distance travelled </li></u...
Upcoming SlideShare
Loading in …5
×

Progressive Waves

5,799 views

Published on

Published in: Education, Technology
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
5,799
On SlideShare
0
From Embeds
0
Number of Embeds
9
Actions
Shares
0
Downloads
46
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Progressive Waves

  1. 1. Progressive waves
  2. 2. <ul><li>“ Looking out into the immensity of the universe, we stand at the shores of the cosmic ocean. Yet our earthly seas are no less beautiful, and the crashing surf reminds us that most of what we know about our world comes from information carried by waves.” </li></ul><ul><li>Carl Sagan </li></ul>
  3. 3. Waves <ul><li>A basic concept of physics </li></ul><ul><li>Progressive waves </li></ul><ul><li>Describing waves </li></ul><ul><ul><ul><li>Longitudinal </li></ul></ul></ul><ul><ul><ul><li>Transverse </li></ul></ul></ul>
  4. 4. Graphical representation <ul><li>Displacement - time graph </li></ul><ul><ul><ul><li>Transverse mechanical wave </li></ul></ul></ul><ul><ul><ul><li>Longitudinal wave </li></ul></ul></ul><ul><li>Amplitude </li></ul><ul><li>Wavelength </li></ul><ul><li>Frequency </li></ul>
  5. 6. Wavelength, frequency and wave speed <ul><li>A wave source vibrates at f vibrations per second  particles of transmitting medium vibrate at same frequency </li></ul><ul><li>1 complete vibration = 1 wave generated </li></ul><ul><li> disturbance =  m from source </li></ul><ul><li>  = f  or c = f  </li></ul><ul><li>Note: this is not on data sheet </li></ul>
  6. 7. Phase
  7. 8. <ul><li>A and B: in phase </li></ul><ul><li>B and C: in antiphase </li></ul><ul><li>Phase difference  </li></ul><ul><li>Calculating  for x 1 and x 2 </li></ul><ul><li> = 2  ( x 1 - x 2 ) </li></ul><ul><li>  </li></ul><ul><li>If x 1 - x 2 integer number  s,  = 2  , 4  , 6  etc </li></ul>
  8. 9. Path difference
  9. 10. <ul><li>Waves emitted from a and B in phase </li></ul><ul><li>At P: relative phase depends on distance travelled </li></ul><ul><li>Path difference = BP – AP </li></ul><ul><li>Path difference = n   constructive </li></ul><ul><li>Path difference = (n + ½ )   destructive </li></ul>

×