Uploaded May 2021 | Updated September 2026, 48 minutes ago
Part of of our quick activities collection for schools.
Find out more at spark.iop.org/always-balanced-rule
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Part of of our quick activities collection for schools.
Find out more at spark.iop.org/always-balanced-rule
Reuse of this content is permitted under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (https://creativecommons.org/licenses/...).
When reusing this content under this licence, you must include the following (and ensure that any downstream users include the same):
• attribute us as the creator and copyright owner (©Institute of Physics)
• include a link to this YouTube page
• refer to the Creative Commons Licence under which it is made available (https://creativecommons.org/licenses/...)
• include a notice that the Institute of Physics disclaims all warranties, as set out in the Creative Commons licence
• not imply or state that we endorse, support or sponsor your use of this content
