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# What if we send a bunch of pulses down the spring and let them reflect back? - PowerPoint PPT Presentation

What if we send a bunch of pulses down the spring and let them reflect back? How will they interfere with one another? Go see what actually happens. . Standing wave – a wave that remains in a constant position Formation: Incident pulses are reflected

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## PowerPoint Slideshow about ' What if we send a bunch of pulses down the spring and let them reflect back? ' - tawana

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Presentation Transcript

What if we send a bunch of pulses down the spring and let them reflect back?

How will they interfere with one another?

Go see what actually happens.

Standing wave them reflect back? – a wave that remains in a constant position

Formation:

• Incident pulses are reflected

• Reflections interfere with incident pulses

• If points of constructive and destructive interference don’t move, a standing wave forms.

Crest/antinode them reflect back?

node

Trough/antinode

Parts of a Wave

3

x(m)

2

4

6

-3

y(m)

Wave Parameters them reflect back?

Wavelength (λ)

amplitude

amplitude

3

x(m)

2

4

6

Wavelength (λ)

y(m)

-3

Period: the time it takes to complete one cycle. on the spring?

• If a student oscillates a wave with a frequency of 5 cycles per second…

• What is the frequency?

• How long does it take to complete one cycle?

• If one cycle is 4 seconds…

• What is the frequency?

• What is the period?

How are frequency and period connected? on the spring?

and

• They are inverses of each other.