Natural Science Forum / Physics / General Physics / July 2008

He created our scientific journey.
"I want to know how God created this world. I am not interested in the
spectrum of this or that element. I want to know His thoughts. All the
rest are just details." Albert Einstein

(1) a_c=v^2/r
but
(2) a_c=4pi^2rf^2
Question: according to eq'n 1), centripetal accel is inversely related

US declares MIT science grad students are security threats
http://blogs.physicstoday.org/newspicks/2008/05/us_declares_mit_science_grad_s.h
tml?type=PTFAVE
The Tech: Eight MIT graduate students with student visas were denied a key credential by
the Department of Homeland Security. ...

Spacetime "point" is not a thing or else it may not be
consistent with some theoretical effect. Hence Spacetime
is not something that is physical or a thing hovering in
vacuum. However, Spacetime seems to exist apart

Hello, I'm writing a software and need some help. I'm trying to
decouple the electric field along a ray (using it to simulate
behaviour of a wave) into horizontal and vertical components  at the
plane of incidence. I'm using this article :

Dear Newsgroup:
Anyone is welcome to join in at Basti Newsgroups.
Nothing personal, whatever differences we have on public newsgroups
will be of no importance and members will be subject to codes of

Is it correct to say that according to Lennard-Jones potential simple
mathematical model the force between two noble gas atoms far apart
from each other is ~ 1/r^6 and ~ 1/r^12 for near distances? The full
equation is found at,

Hello Google:
My name is Mehran Basti and I have Google Basti Newsgroups.
Someone without becoming a member penetrated into my account and
posted articles.

Amsterdam is the city of brotherhood.  http://www.prontohotel.com
recommends the beautiful "Northern Venice", nickname that Amsterdam
earned thanks to its many channels, to those who desire to have an
opening mind experience. Great museums, buildings and gorgeous

Assume an asteroid is traveling at 25,000 mph on on collision course
with the Earth----and is one million miles away.  When that asteroid
gets close enough for the Earth's gravitational field to exert a
strong influence will the asteroid accellerate to an even higher

Weight=Mass*Acceleration or deceleration
Momentum is Mass*velocity
Weight is when momentum is changing.
It is the way new motion is detected.

Dear Lone Ranger:
Isn't it, in fact, true that there is no peer-reviewed evidence that
CO2 has any effect at all on atmospheric temperatures?
It's a simple question, Mr. Ranger.  Why not address the question

For over half a century now Theoretical Physics academia has been
desperately searching for the TRUE value of the Fine Structure
Constant. The best "guess" so far from those scientists in Quantum
Mechanics diligently working to find this correct value is:

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From Osher Doctorow
Pigod Nicolini of U. Trieste and INFN Trieste Italy, the paper
reviewed by J.C.A. Miller-Jones of NRAO (National Radio Astronomy
Observatory Headquarters Charlottesville Virginia USA - the latter