Term
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Definition
| energy can be considered as either a wave or particle |
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Term
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Definition
| This is how it is diagramed |
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Term
| What is wavelength measured in? |
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Definition
λ= wavelength in micrometers
1micrometer=.000039 inches |
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Term
| What is frequence represented by? |
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Definition
V= frequency
(peaks per second) |
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Term
| What is the Speed of light represented by? |
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Definition
C= speed of light
186,000 miles per second |
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Term
| Formula for relationship between wavelength,frequency, and speed of light |
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Definition
λv=c
Wavelength and frequencey have inverse relationship |
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Term
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Definition
| This is thesmalles amount of energy that can be transported by an electromagnetic wave |
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Term
| Particle perspective formula |
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Definition
E=hv
h= planks constant 6.63 x 10-34 joules per second |
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Term
how many calories is 1 joule?
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Definition
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Term
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Definition
E (energy) increases when v (frequency) increases and frequency increses when when λ(wavelength) decreases
This means shorter wavelengths have more energy |
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Term
| Electro magentic spectrum |
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Definition
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Term
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Definition
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Term
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Definition
10% UV
50% visible
40% Infared |
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Term
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Definition
| amount of energy passing thorugh and area per unit time |
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Term
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Definition
| 1370 wats per meter squared |
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Term
| watts in relation to joule |
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Definition
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Term
| What does atmospheric scattering do |
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Definition
| reduces energy reaching earths surface |
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Term
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Definition
flux of incident energy decreases with distance from the source
Ex: further you get from a campfire colder it gets double th distance 1/4 flux |
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Term
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Definition
| Emits and absorbs energy 100% effeciency |
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Term
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Definition
shows emission of radiation at different wavelengths
more radiation emitted at shorter wave lengths |
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Term
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Definition
λmax= 2898/T
T= temperature in kelvin
wavelength with the highest radiation flux from object |
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Term
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Definition
F=σε T4
epsilon= emissivity
sigma=stefan constant 5.67 x108 w m-2 k-4
T= temperature in kelvin |
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Term
| how many watts does a human face emit? |
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Definition
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Term
| Earths temperature results from three factors |
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Definition
- solar flux
- albedo
- greenhouse effect
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