Big Idea: Waves carry information without causing a permanent change on the intervening medium. More info...
Browse worksheets, ideas, lesson plans and more for students aged 5-19 and narrow your search using the filters below.
The power in the heating by radiation pathway is measured in watts. That's simple and is often called the radiant power. More...
This episode considers the ways in which the intensity of radiation decreases with distance from the source.
Recognising and celebrating outstanding contributions to the field of physics education.