.comment-link {margin-left:.6em;}

2Physics Quote:
"Can photons in vacuum interact? The answer is not, since the vacuum is a linear medium where electromagnetic excitations and waves simply sum up, crossing themselves with no interaction. There exist a plenty of nonlinear media where the propagation features depend on the concentration of the waves or particles themselves. For example travelling photons in a nonlinear optical medium modify their structures during the propagation, attracting or repelling each other depending on the focusing or defocusing properties of the medium, and giving rise to self-sustained preserving profiles such as space and time solitons or rapidly rising fronts such as shock waves." -- Lorenzo Dominici, Mikhail Petrov, Michal Matuszewski, Dario Ballarini, Milena De Giorgi, David Colas, Emiliano Cancellieri, Blanca Silva Fernández, Alberto Bramati, Giuseppe Gigli, Alexei Kavokin, Fabrice Laussy, Daniele Sanvitto. (Read Full Article: "The Real-Space Collapse of a Two Dimensional Polariton Gas" )

Wednesday, February 09, 2005

1905: The most productive year of Einstein

In 1905 Einstein gave the world three exciting ideas in 3 separate papers:

(i) The application of the concept that light also behaves like a particle
even though many of its behaviour are more like waves.
Einstein later got Nobel Prize for this paper which explained the
photoelectric effect.
The photoelectric effect is something that converts light into electricity
and works in photocells.
You know what photocells are! Nowadays in most public toilets
it automatically switches on flushes as you leave!

(ii) The brownian motion - the kind of motion of you see among dust
particles if you throw some in a glass of water. The statistics of this
motion is very interesting to Physicists and its knowledge is applied
in understanding so many other things - FROM the transfer of heat
among bodies TO how stars got formed in the first place!

(iii) The Theory of Relativity: Who have not heard of it?
This is the paper which revolutionized mankind's concept of time
and space in which they lived.
Einstein showed us that time was no more an absolute concept.
Your time could be different from my time if we move to or from
each other at constant speed.
These concepts gave us the most well-known scientific equation:
E = mc^2 and taught us that mass can be converted into energy.

We will elaborate on these concepts more. ... one by one ...
We will discuss about what else Einstein did and Others also followed.
How were experiments done to prove Einstein's concepts?

This is just an introduction. So many more stories to tell ....

Wait and check us regularly ....




1 Comments:

At 7:28 PM, Blogger oceanskies79 said...

I look forward to your next post.

 

Post a Comment

Links to this post:

Create a Link