Loading...

Lesson: Chapter - 18

Optics

Optics is the branch of physics that deals with light and vision, chiefly the generation, propagation, and detection of electromagnetic radiation having wavelengths greater than x-rays and shorter than microwaves.

Having studied wave phenomena generally, let’s take a look at the special case of electromagnetic waves.

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.

Optics is the study of visible light, and how light can be manipulated to produce visual images.

Back Next

Next to display next topic in the chapter.

Practice Questions

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.

More for You
All in this Category

You may be interested in

Colleges in cities of Punjab

Comprehensive lists of colleges in ...

Colleges in Peshawar

Find a comprehensive list of major ...

Social Articles

A list of Articles on Social Issues ...

LUMS: NOP Financial Aid Program

Find all about LUMS NOP Financial A ...

SAT-Subject Chemistry

Lessons and practice questions of S ...

PAF - Cadet Wing

Join Pakistan Air Force as a Cadet. ...

AMC Army Medical College

AMC Army Medical College is popular ...

AU - Air University

How to get admission in Air Univers ...