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P1A Topic 1
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p1a topic 1
visible light and the solar system
Mind Map by
, updated more than 1 year ago
almost 9 years ago
P1A Topic 1
Everything orbited the earth in circles
Introduced Copernicus 1543
Condemned by the church
Galileos observation of Jupiter's moons
Amplitude (height of the wave)
Frequency (waves per second)
Wavelength (distance of one peak to the next)
Speed (How fast)
Transverse (the vibrations are 90 degrees to the direction of travel)
Longitudinal (the vibrations are along the same direction of travel)
Waves transfer energy and information without transferring matter.
Wave hits boundary between one medium and another.
The angle of reflection r is the same as the angle of incidence i
Occurs because of a change in density.
air to glass.
EM waves travel slower in more dense.
Hits face on, no refraction, same direction.
Hits at a angle wave changes direction.
Air to glass bends towards the normal
Glass to air bends away from the normal
Converging lens (convex)
Causes rays to converge to a focus
Diverging lens (concave)
Causes rays to diverge
Focal point one at the front, one at the back.
Distance from the lens to its focal point
A real image is there (projected on a screen) a virtual is not (can not be projected on a screen)
In a refracting telescope, the objective lens forms a image inside the tube. Eyepiece then magnify's it.
Objective lens = Convex lens
The rays are so far away they're pretty much parellel
Uses two mirrors and a eyepiece lens.
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