Electricity and magnetism
Charges and fields, electric current, magnetism and induction, gas discharges and plasma physics.
Material on this topic
Charge conservation law , one of the fundamental exact laws of nature, which states that the algebraic sum of the electric charges of any closed (electrically isolated) system remains unchanged, whatever processes take p…
Sound , in the broad sense, is the oscillatory motion of the particles of an elastic medium propagating as waves in gaseous, liquid or solid media— the same as elastic waves; in the narrow sense it is a phenomenon percei…
As is well known, the dynamic and acoustic characteristics of vehicles change under the influence of oncoming flows of air.
Electrons are elementary particles whose motion along conductors is the basis of electronics.
Russian physicists have presented their new development to the public.
The heat given off by molten rock can be used as a highly efficient source of electricity.
Thanks to recent advances, our refrigerators may work quite differently within a few years.