1. |
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en.wikipedia.org
https://en.wikipedia.org/wiki/Cherenkov_radiation
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Organic Keywords: 26,359,258
Organic Competitors: 968
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PPC Keywords: 20
PPC Competitors: 165
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2. |
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webexhibits.org
http://www.webexhibits.org/causesofcolor/4BA.html
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Organic Keywords: 12,320
Organic Competitors: 873
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PPC Keywords: 0
PPC Competitors: 3,090
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3. |
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icecube.wisc.edu
http://icecube.wisc.edu/~tmontaruli/801/lect10.pdf
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Organic Keywords: 804
Organic Competitors: 957
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PPC Keywords: 0
PPC Competitors: 0
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4. |
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britannica.com
https://www.britannica.com/science/Cherenkov-radiation
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Organic Keywords: 900,351
Organic Competitors: 1,015
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PPC Keywords: 0
PPC Competitors: 63
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5. |
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math.ucr.edu
http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/cherenkov.html
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Organic Keywords: 4,488
Organic Competitors: 1,016
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PPC Keywords: 0
PPC Competitors: 0
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6. |
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large.stanford.edu
http://large.stanford.edu/courses/2014/ph241/alaeian2/
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Organic Keywords: 3,381
Organic Competitors: 156
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PPC Keywords: 0
PPC Competitors: 0
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7. |
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youtube.com
https://www.youtube.com/watch?v=x4Ir6E4IG64
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Organic Keywords: 35,072,888
Organic Competitors: 737
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PPC Keywords: 5,046
PPC Competitors: 41,177
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8. |
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youtube.com
https://www.youtube.com/watch?v=FCOqZfDElIQ
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Organic Keywords: 35,072,888
Organic Competitors: 737
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PPC Keywords: 5,046
PPC Competitors: 41,177
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9. |
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youtube.com
https://www.youtube.com/watch?v=_Kf2f_9MfPc
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Organic Keywords: 35,072,888
Organic Competitors: 737
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PPC Keywords: 5,046
PPC Competitors: 41,177
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10. |
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gae.ucm.es
http://www.gae.ucm.es/~emma/docs/tesina/node4.html
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Organic Keywords: 137
Organic Competitors: 1,062
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PPC Keywords: 0
PPC Competitors: 0
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