If we drop a charged particle and a neutral particle at the same time(same hight) in a uniform gravitaional field, they will hit the ground simultaneously?
on one hand：a freely falling charged particle will radiate according to a supported observer, so the radiation recoil (radiation...
Changes spotted in fundamental constant
Sep 2, 2010
Billions of years ago the strength of the electromagnetic interaction was different at opposite ends of universe. That's the surprising conclusion of a group of physicists in Australia, who have studied light from ancient quasars. The...
Black hole can regard as most efficency mass-energy converter?
With blackhole and hawking radiation's help, i come up with an idea to convert my apple completely into pure energy without another antimatter apple:biggrin:
I throw my apple into a blackhole , eventually my apple will convert...
If a neutron star accumulate materials from its companion star ,then it's mass exceeded Tolman–Oppenheimer–Volkoff limit, it will collapse into a blackhole! My question is ,in this case ,it will produce "gamma-ray burst"?
In principle, light-water reactor can also produce plutonium from uranium-238 as heavy-water reactor .Plutonium can be used to make nuclear-weapon!
But,Why do we like to offer this kind of power plant to other nations?
My friends and I are talking about this question.From the point of my view,I do not think that man-made nuclear weapons can destory the moon! But one of my friends insist that man-made nuclear weapons can do that job!what is your opinion...
Why black holes can have static electric fields???
The gravitation of black hole is so strong that nothing can escape from it !
Why black holes can have static electric fields around with it???
Thank you in advance！
The Large Hadron Collider will not be ready in time to perform a low-energy "engineering run", which was originally scheduled to take place this November, according to an official at CERN. This will leave the operators no chance to gain experience with the particle accelerator's steering and...