Chapter 2 Flashcards
(8 cards)
1
Q
electromagnetic radiation
A
the radiation from planets, stars, or galaxy
2
Q
visible light
A
the particular type of electromagnetic radiation to which the human eye happens to be sensitive
3
Q
waves
A
the way that electromagnetic radiation travels through space
4
Q
wave period
A
the number of seconds needed for the wave to repeat itself at some point in space
5
Q
wavelength
A
the number of meters needed for wave to repeat itself at a given moment in time
6
Q
amplitude
A
the maximum departure of the wave from the undisturbed state–still air, say, or flat pond surface
7
Q
frequency
A
the number of wave crests passing any given point per unit time
8
Q
diffraction
A
light waves “bending around corners”
