Video Instruction

showmethephysics.com

This movie is part of the collection: Prelinger Archives

Producer: Coronet Instructional Films
Keywords:

E.  Wave Front – locus of adjacent points on a wave which are in phase

Top View

Ex) Distance between arrows = .90 cm

Wavelength of  wave?

λ = .30 cm

III. Periodic Wave Phenomena

Wave Interference
St. Mary's Physics 2011

Beats - When Sounds Overlap
(Video)

- Bob Barrett

Interference – effect produced by two waves passing simultaneously through a region

1. Superposition – when waves overlap, the resultant displacement is the algebraic sum of the individual displacements of each wave

Monterey Institute

a) Constructive Interference

Wave Interference
- Show Me The Physics

2011

Spring Wave -
"Show me the Physics"
Show Me The Physics Students

1)

2)

Amplitude?

2A

3)

Waves reemerge as separate waves

b) Destructive Interference

[ Flash ]

1.

2.

At moment of overlap, amplitudes cancel (for a moment)

3.

Waves reemerge as separate waves

[ Flash ]

 "As the two waves below pass through each other, the medium at point P will ..."

(1) vibrate up and down

(2) vibrate left and right

(3) vibrate into and out of the page

(4) remain stationary

(4) remain stationary

 What will the amplitude of the resultant wave be when wave A and B meet at point X?

Jan. 2004

+1

 What is the amplitude of the wave produced when these waves overlap?

15 cm

 Ranking Task The diagram below shows two waves traveling in the same medium. Points A, B, C, and D are located along the rest position of the medium. The waves interfere to produce a resultant wave. Rank the magnitude of the displacement from the equilibrium position from greatest to least. Ties Are Possible.

Interference -  1 | 2 | 3 |

(Right Click, Save As, Open)

- Paul Hewitt

(Jason P. - 2005)

(R. Meija - 2005)

Destructive Interference

[ HTML5 ]

(Jason P. - 2005)