EM waves are
transverse traveling waves produced by the oscillations of an electric field and
a magnetic field. Because they are not transmitted by any material medium, as
sound waves are through air molecules, EM waves can travel through the vacuum of
space and give us valuable information about the universe beyond the Earth’s
atmosphere.
Electromagnetic waves play a great many roles in our lives: we use
EM waves of different wavelengths to microwave our dinner, to transmit radio
signals, and to x-ray for broken bones. Most important, we are only able to see
because our eyes can detect the EM waves that make up the spectrum of visible
light.
Video Lessons and 10 Fully Explained Grand Tests
Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.