Tag Archives: Physics

Why exactly atomic bombs explode?

In an atomic bombs nuclear reactions provide the energy of the explosion. In every reaction, where a thermal neutron reaches a $Pu$ or a $U$ nucleus a fission reaction takes place and two or three neutrons and $gamma$ radiaton are produced. I know that it happens in a very short time, and an extreme amount… Read More »

Observer independent quantities in special relativity

I have been thinking about what things about a point particle do all observers agree about? And I thought trajectories of particles must be the same for all observers, right? But, clearly it is not. Because forces and accelerations are not same for all observers. As far as I could think, Only the overall shape… Read More »

Observer independent quantities in special relativity

I have been thinking about what things about a point particle do all observers agree about? And I thought trajectories of particles must be the same for all observers, right? But, clearly it is not. Because forces and accelerations are not same for all observers. As far as I could think, Only the overall shape… Read More »