Skip to content
TeachersGo to pupils ✏️
CasharOpen learning
SO — SoomaaliEN — English

Emitters of infrared & black body radiation

Lesson 4 / 27

View unitNext lesson →View as pupil →

Lesson video

The video is not available yet.

Lesson slides

not available yet

Lesson details

Lesson outcome

I can describe how to investigate the emission of infrared by different surfaces, state what is meant by a ‘black body’ radiator and explain how radiation affects an object’s temperature.

Show transcript
All bodies (objects) of all temperatures emit and absorb infrared radiation. Hotter bodies emit more IR in a set time. The range of wavelengths emitted, and their intensities, depend on an object’s temperature. Good absorbers (e.g. dark and dull surfaces) are also good emitters. Shiny metal surfaces are poor absorbers/emitters. A black body is a theoretical object that absorbs all of the radiation that falls on it. The temperature of a body depends on the rates at which radiation is absorbed and emitted.

Worksheet

not available yet

Quizzes

This quiz is not available yet.

What pupils see

The same lesson as a pupil sees it. You can set any section as work on its own.

  • IntroductionPrepare · Not available
  • Starter quizActivate · Not available
  • Lesson videoLearn · Not available
  • Exit quizCheck · Not available
This content is by Cashar and published under an open licence.