Καινοτομία

Scientists report radiation reaction when an electron beam travelling close to the speed of light collides with a high-intensity laser

Electromagnetic radiation is all around us. It’s in the radio waves that make mobile phones work, in the rainbow we see when it rains on a sunny day, and in the invisible infrared waves we use in our remote controls to change TV channels. We know it comes in many forms, from radio waves and microwaves all the way up to the high-energy X-rays and gamma rays. But what, precisely, is it?