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# Physics 7C SS1 Lecture 2: Wave Model - PowerPoint PPT Presentation

Physics 7C SS1 Lecture 2: Wave Model. 1D & 2D Wave Review Phase Constant vs. Total Phase Introduction to Interference. `. Longitudinal vs. Transverse Wave Polarization. Longitudinal Wave. Transverse Wave. Wavefront Representation. Wavefront Representation.

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### Physics 7C SS1Lecture 2: Wave Model

1D & 2D Wave Review

Phase Constant vs. Total Phase

Introduction to Interference

Longitudinal vs. Transverse Wave Polarization

Longitudinal Wave

Transverse Wave

How long is the marked distance?

/2

T/2

T

• Consider:

• Period

• Wavelength

• Frequency

• Wave speed

• Which can be changed if the source changes in some way?

• Which can be changed if the medium changes in some way?

When I change the speed at which the machine moves, which of the following will change?

• Frequency, period, wavelength, and wave speed all change

• Frequency, period and wavelength

• Frequency and wavelength

• Wavelength and wave speed

• Frequency and period

• Wave displacement depends on where AND when (x and t)!

• What are we graphing anyway?

Check out “longitudinal traveling wave” application; Link on web page!

Which of the following includes only points with a total phase of exactly/2?

• All

• ABC

• AEH

• ACF

Which of the following includes only points with a total phase equivalent to /2?

• All

• ABC

• AEH

• ACF

Which of the following lists only points with a fixed phase constant of exactly to/2?

• All

• ABC