I have heard that you need an infinite amount of energy to achieve the speed of light. But if you have a particle accelerator and if it exerts a constant force (by applying an electric field) why won't the electrons we have reach c. i have also heard that electrons will travel upto something...
i have had this problem for some time. why exactly does water show a maximum density at about 277 K. and is it the only substance to show such a behaviour.