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P1c: A Spectrum of Waves
- Wave Properties
- The trough of a wave is the lowest point
on a wave below its rest position.
- The crest of a wave is the
highest point on a wave above
its rest position.
- The wavelength of a wave is
the distance between two
successive points on a wave
having the same displacement
and moving in the same
direction
- The trough of a wave is the lowest point
on a wave below its rest position.
- The frequency of a wave is the number of complete
waves passing a point in one second.
- The equation for the speed of a wave is: wave speed =
frequency × wavelength
- The equation for the speed of a wave is: wave speed =
frequency × wavelength
- Electromagnetic Spectrum
- Radio
- Microwave
- Infared
- Visable
- Ultra Violet
- X- ray
- Gamma
- Gamma
- X- ray
- Ultra Violet
- Visable
- Infared
- Microwave
- Radio
- Getting the message across
- Some optical instruments, such as the
periscope, uses two or more plane mirrors.
- Refraction occurs because the speed of waves
decreases as the wave enters a more dense
medium and increases as the wave enters a less
dense medium. The frequency stays the same
but the wavelength changes.
- Diffraction is the spreading
out of a wave as it passes
through a gap.
- The size of a communications
receiver depends on the
wavelength of the radiation.
- Some optical instruments, such as the
periscope, uses two or more plane mirrors.
- Diffraction Effects
- The amount of diffraction depends on the
size of the gap; the most diffraction occurs
when the gap is a similar size to the
wavelength. Larger gaps show less
diffraction.
- Diffraction effects are noticeable in
telescopes and microscopes
- The amount of diffraction depends on the
size of the gap; the most diffraction occurs
when the gap is a similar size to the
wavelength. Larger gaps show less
diffraction.
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