Definitions
Alternating loud sounds with quiet in between
What are beats?
1/T
How do you calculate frequency?
neeeeeeeooooowwwwwwwww
What does a sound source sound like when it goes past an observer?
A wave that stores energy
What is a standing wave?
red, orange, yellow, green, blue, indigo, violet
What is white light made up of?
When one object vibrating at the same natural frequency of a second object forces that second object into vibrational motion.
What is resonance?
f'
What is the symbol for observed frequency?
The observed frequency is higher
What happens to observed frequency when a source is going towards an observer?
= 4.59 x 10-9 m
What is 4.59 nm in m?
A light source of a single wavelength/ frequency
Define the term 'monochromatic light'
approx 340 m/s
What is the speed of sound in air?
What happens when a sound source is moving away from an observer?
Is is the same as the 3rd harmonic
What is the 2nd overtone the same as?
A rainbow spectra is formed with a central white order
What happens when white light passes through a diffraction grating?
A large number of parallel, closely spaced slits
What is a diffraction grating?
fb = |f1-f2|
How do you calculate beat frequency?
The Doppler equation where vw and vs are added
Which Doppler equation is used when a source is moving away from an observer?
A node is always formed
What happens when a standing wave reflects at a fixed end string OR at a closed-end pipe?
nλ = dsinθ
What equation is used to make calculations with diffraction gratings?
When phase difference between 2 waves is constant
Define the term 'coherent'
L
What symbol represents the distance between the diffraction grating and the screen?
What would the observer hear if the source was stationary?
It would look like 4 'bubbles' or 'eyes'?
What does the 4th harmonic look like on a string with fixed ends?
The pattern produced is a series of bright and dark spots
What pattern is formed when monochromatic light is shone through a diffraction grating?