Light 3 Flashcards
Waves come in varying sizes, and the sizes are measured in
wavelengths
Light can move as waves or as particles, but the light you can see is best explained in terms of.
waves
A wavelength is
the distance from one point to a corresponding point on a subsequent wave, like from the peak of one wave to the peak of the next, or from a trough to a trough.
The only wavelengths that you can see fall between ______ and _______ billionths of a meter.
400
700
All of the colors that you can perceive fall within that range.
Despite the size of the waves in the visible light spectrum, waves can be much larger, such as
radio waves, and much smaller, like gamma rays. The visible light spectrum is just a small part of the overall spectrum of waves.
Light waves are also measured according to
their frequency, which is how many waves can pass a given point in a given amount of time.
Frequency is measured in ______, or _____ for short.
Hertz (Hz)
When it comes to visible light, your eyes can pick up anything from _________– which you understand as______ – to ___________– which you see as_________.
430 trillion Hz red
750 trillion Hz violet
There are other, higher frequencies that you can’t see (_______), and there are lower ones that you can’t see either(________).
Gamma
Radio
Visible light can also be measured by its___________.
energy
All waves are made of traveling energy, and the amount of energy contained in each wave is related in proportion to its__________.
frequency
The more energy a wave has, the higher its_________, and vice versa.
frequency
Which color has the most energy?
When it comes to visible light, the highest frequency color, which is violet, also has the most energy.
Which color has the least energy?
The lowest frequency of visible light, which is red, has the least energy.
