6, 7, 8 Flashcards
Wavelength
distance between corresponding points on adjacent waves
Frequency
number of waves passing a given point per unit of time
The longer the wavelength,
the smaller the frequency
The shorter the wavelength,
the higher the frequency
Amplitude
one-half the heigh of the wave from peak to trough
Light
electromagnetic radiation (visible or non-visible)
Electromagnetic radiation
form of energy that has wave characteristics
Electromagnetic radiation propagates through a vacuum at this speed
2.998 x 10^8 s^-1
All electromagnetic radiation travels at the same velocity of
the speed of light
Constructive interference
peaks or troughs from one wave coincide with peaks or troughs of the other
Destructive interference
peaks (troughs) from one wave coincide with troughs (peaks) of the other
Waves can only form if they have a what? (quantization)
integer number of half-wavelengths
The maxima blackbody curves shift to shorter wavelengths as
temperature increases
Example of maxima blackbody curves shifting to shorter wavelengths as temperature increases
heated metals going from black to dark red, to brighter red, to white hot
Photoelectric effect
light striking a metal surface is viewed as particles (photons) not waves