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Electromagnetic Spectrum

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by

Christopher White

on 2 December 2013

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Transcript of Electromagnetic Spectrum

Electromagnetic spectrum
All the types of radiation arranged by wavelength
Longest waves, used for TV signals
Wavelength is about the size of you! Works in your microwave (hence the name)
About the size of a honey bee. Shows heat patterns
Smaller than a pinpoint. IN order from longest to shortest
Red
,
Orange
,
Yellow
,
Green
,
Blue
,
Indigo,

Violet

(
R
O
Y
G.
B
I
V
)
Smaller than light, can lead to sunburn!
Even smaller. Had a broken bone? These found it.
The smallest radiation of all! Not actually used to make Hulks, but is used for medical purposes like treating cancer
Electromagnetic energy
Radiation energy! Travels in waves
White light is all colors mixed together!
Objects either absorb light, reflect light or let light pass through!
Color
Opaque Objects
Opaque objects reflect or absorb all light! They are the color they reflect! A blue chair is blue because it reflects blue light and absorbs all other colors!
Translucent
Lets some light pass through, absorbs some light
It appears as the color it lets through
Transparent
Lets all light pass through. Appears clear
A light wave will bounce off a reflective surface at an angle equal and opposite to the angle that it hits the surface at.
Reflection
Plane Mirror
A flat mirror
Will reflect the image exactly the same size, but backwards.
Concave Mirror
Bends in like a cave
Reflects an image that is smaller and upside down.
Convex Mirror
Bends out at the ends
Reflects an image that is smaller and right side up
Light appears to bend as it passes through different mediums.
Refraction
Concave lens
A lens that bends in like a cave
Makes an image smaller, but allows you to see a wider area

Convex Lens
Bends out in the center.
Magnifies and flips an image
Full transcript