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## physicslover77 2 years ago how do electric field lines look on a spherical wave front created by a point source of light?

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1. Iamgmg90

Can you phrase that a bit better please.

2. physicslover77

|dw:1361889363650:dw| this is for a ray

3. physicslover77

i.e. plane wave front can do the same for sperical wavefront

4. Iamgmg90

I'm thinking huygens principle

5. physicslover77

|dw:1361889464131:dw|

6. Iamgmg90

polarizing light?

7. Iamgmg90

I haven't learnt about electric field lines produced by photons

8. physicslover77

light is an electromagnetic wave, right?

9. physicslover77

so i want to know what do electric field vectors look like for a spherical wave front

10. Iamgmg90

ah okay, so the point source can be treated as the center of the sphere, and light is propagating in all directions away from this point? you want to know the electric field vectors it produces?

11. physicslover77

|dw:1361889809337:dw|

12. physicslover77

yes

13. Iamgmg90

max wells equations will sort you out

14. Iamgmg90
15. Iamgmg90

Maxwell's*

16. physicslover77

how do i use them to solve this problem? can you solve this problem please

17. Iamgmg90

|dw:1361890486162:dw|

18. Iamgmg90

intensity at surface of the sphere $I = \frac{ S }{ 4\pi r^2 }$ Each square follows the law so intensity will change at each one like, I ...I/4....I/9

19. Iamgmg90

Same applied for electric field E, as $E = \frac{ Q }{ 4 \pi \epsilon_0 r^2 }$

20. Iamgmg90

Where source strength would be $= \frac{ Q }{ \epsilon_0 }$

21. Iamgmg90

If you want vectors, and the nature of light, you want to be looking into maxwells equations, and to understand them, grasp the concepts of vector calculus, curl, divergence, grad, laplacian

22. physicslover77

ok, but how do the electric field vectors look like on a wavefront at particular time?|dw:1361890945224:dw|

23. UnkleRhaukus

|dw:1361892248346:dw|