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T

period: seconds per one cycle

period: seconds per one cycle unit

s

T unit

s

f

frequency: cycles per one second

frequency: cycles per one second unit

Hz or s^-1

f unit

Hz or s^-1

A

amplitude: maximum vertical displacement from equilibrium

amplitude: maximum vertical displacement from equilibrium units

m

A unit

m

lambda

wavelength: distance from crest to crest

wavelength: distance from crest to crest unit

m

lambda unit

m

transverse wave

particles in the medium oscillate perpendicular to wave travel

longitudinal wave

particles in the medium oscillate parallel to wave travel

d (waves)

distance between two slits

distance between two slits unit

m

d (waves) units

m

D (waves)

path length: length between the boundaries of a wave medium

path length: length between the boundaries of a wave medium unit

m

D (waves) unit

m

y (waves)

distance between two spots in an interference pattern

distance between two spots in an interference pattern unit

m

y (waves) unit

m

a (waves)

width of a single slit

a (waves) unit

m

width of a single slit unit

m

L (waves)

distance from a single slit to the screen

distance from a single slit to the screen unit

m

n (waves)

harmonic number; the fundamental harmonic is written as n(v1) or f(v1)

L (waves) unit

m

node

place(s) on a standing wave where the medium is not displacing/constantly at rest

antinode

place(s) on a standing wave where the medium oscillates with maximum amplitude

standing wave boundaries

closed/fixed end are always nodes and open/free ends are always antinodes

standing wave rules

if the boundaries are the same, all harmonics can appear; n can be 1,2,3,4…

if the boundaries are different, only odd harmonics can appear; n can be 1, 3, 5, 7

distance between adjacent antinodes: ½ wavelength

doppler effect (towards)

when the source/observer are moving towards each other, the:

1.) observed wavelength gets smaller

2.) observed frequency gets bigger

3.) observed period gets smaller

doppler effect (away)

when the source/observer are moving away from each other, the:

1.) observed wavelength gets bigger

2.) observed frequency gets smaller

3.) observed period gets bigger

f (vbeat)

beat frequency: happens when two different, but similar, frequencies interfere: f (vbeat) = f (v2) - f( v1)

f (vbeat) unit

Hz or s^-1

beat frequency: happens when two different, but similar, frequencies interfere: f (vbeat) = f (v2) - f( v1) unit

Hz or s^-1