Harry Kroto Harry Kroto 2004 P = E 3 P = E E = Eocos2πωt 4.

Παρουσίαση με θέμα: "Harry Kroto Harry Kroto 2004 P = E 3 P = E E = Eocos2πωt 4."— Μεταγράφημα παρουσίασης:

1

2 Harry Kroto 2004

3 P = E 3

4 P = E E = Eocos2πωt 4

5 P = E E = Eocos2πωt P = Eocos2πωt 5

6 Harry Kroto 2004

7 this shows a Hertz osci http://en. wikipedia. org/wiki/File:Dipole
this shows a Hertz osci -oli Harry Kroto 2004 7

8

9 P = α E Total polarisability

10 P = α E Total polarisability
α = αo + (∂α/∂q)q Molecular polarisability - function of coordinate

11 P = α E Total polarisability
α = αo + (∂α/∂q)q Molecular polarisability - function of coordinate E = Eo cos 2πωet Electric Field radiation frequency ωe

12 P = α E Total polarisability
α = αo + (∂α/∂q)q Molecular polarisability - function of coordinate E = Eo cos 2πωet Electric Field radiation frequency ωe q = qo cos 2πωqt coordinate of the molecular motion ωq

13 P = α E Total polarisability
α = αo + (∂α/∂q)q Molecular polarisability - function of coordinate E = Eo cos 2πωet Electric Field radiation frequency ωe q = qo cos 2πωqt coordinate of the molecular motion ωq P = [αo + (∂α/∂q) q] E

14 P = α E Total polarisability
α = αo + (∂α/∂q)q Molecular polarisability - function of coordinate E = Eo cos 2πωet Electric Field radiation frequency ωe q = qo cos 2πωqt coordinate of the molecular motion ωq P = [αo + (∂α/∂q) q] E P = [αo + (∂α/∂q) q] Eo cos 2πωet

15 P = α E Total polarisability
α = αo + (∂α/∂q)q Molecular polarisability - function of coordinate E = Eo cos 2πωet Electric Field radiation frequency ωe q = qo cos 2πωqt coordinate of the molecular motion ωq P = [αo + (∂α/∂q) q] E P = [αo + (∂α/∂q) q] Eo cos 2πωet P = [αo + (∂α/∂q) qo cos 2πωqt] Eo cos 2πωet

16 P = α E Total polarisability
α = αo + (∂α/∂q)q Molecular polarisability - function of coordinate E = Eo cos 2πωet Electric Field radiation frequency ωe q = qo cos 2πωqt coordinate of the molecular motion ωq P = [αo + (∂α/∂q) q] E P = [αo + (∂α/∂q) q] Eo cos 2πωet P = [αo + (∂α/∂q) qo cos 2πωqt] Eo cos 2πωet P = αo Eo cos 2πωet + (∂α/∂q) qo Eocos 2πωqt cos 2πωet

17 P = α E Total polarisability
α = αo + (∂α/∂q)q Molecular polarisability - function of coordinate E = Eo cos 2πωet Electric Field radiation frequency ωe q = qo cos 2πωqt coordinate of the molecular motion ωq P = [αo + (∂α/∂q) q] E P = [αo + (∂α/∂q) q] Eo cos 2πωet P = [αo + (∂α/∂q) qo cos 2πωqt] Eo cos 2πωet P = αo Eo cos 2πωet + (∂α/∂q) qo Eocos 2πωqt cos 2πωet P = αo Eo cos 2πωet + ½(∂α/∂q) qo Eo[cos 2π(ωe+ ωq)t + cos 2π(ωe- ωq)t]

18

19 P = E E = Eocos2πωt P = Eocos2πωt 19

20

21 P = E E = Eocos2πωt P = Eocos2πωt 21

22 P = E E = Eocosωt P = Eocosωt

23 Attenuation due to scattering by interstellar gas and dust clouds
Harry Kroto 2004

24 Harry Kroto 2004

25 Harry Kroto 2004

26 P =  E

27 P =  E

28 P =  E

29 P =  E

30 Bill Madden