Recent content by Sab95

If two polarizers are placed 90 degree rotated to each other, we won't be able to see anything. But when I tried looking directly at sun, which I did only for a second, with that perpendicular pair of polarizers, I was still able to see the sun. Shouldn't the sun disappear too ? Or why is it...

Lol! Then. If I sit in a room with white walls. And I turn on a monochromatic source ? Since they are all coherent now. Will I see interference after they reflect from the walls ?

I have been reading optics for the past few months. If light has the property of interference, when I look around, why don't I see any interference patterns. does it mean all the waves around me are in phase ? Another question is, why don't Cellphone signals interfere with each other ? they are...

I know that our solar system and sun evolved from a nebula of a giant star.. but what happened to the remaining of the star.. entire star cannot go boom.! at least some remaining portion of the primordial star should have existed in the form of a neutron star or a white dwarf. If it existed what...

yup.. now i got it.. pls stay tuned for further questions..

@Bandersnatch : But how that could account into the revolution of planets.. its something related with the rotation of the planet.. how is it related with the revolution..?? that's the part i can't understand..

I read in a article that Earth revolves around the sun at speed of 30km/s but from where did it get its velocity at the beginning..?