Big Ideas: Atoms are not indivisible - they have their own structure. More info...
Demonstration: gamma radiation is part of the electromagnetic spectrum. It is not absorbed by the air, but its intensity...
As light spreads out from a source, its intensity decreases due to the processes of absorption and spreading.
The focus of this episode is the properties of ionizing radiation. It is a good idea to introduce these through a...
Recognising and celebrating outstanding contributions to the field of physics education.