The drinking bird toy appears to require no external energy source
The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.
Explaining an apparent perpetual motion machine involves ideas about energy stores and energy conservation, and the ideal gas law.
Your organisation does not have access to this article.
Sign up today to give your students the edge they need to achieve their best grades with subject expertise
Subscribe