Electromagnetic radiation (EMR) in Bengali (Abhijit sir)..lecture 2..@Geo. study centre

Описание: Radiation that has both electric and magnetic fields and travels in waves. It comes from natural and man-made sources. Electromagnetic radiation can vary in strength from low energy to high energy. It includes radio waves, microwaves, infrared light, visible light, ultraviolet light, x-rays, and gamma rays.