It looks likely that the kilogram will be redefined in November. It is the last fundamental constant to be defined by a physical artefact - the kilogram prototype stored for many years in Paris. Its obviously about time, but its also a little sad to lose a link like this with the past.
the Ampere looks set to be redefined too. A prospect about which I feel no regret whatsoever.
I just uploaded a pair of PowerPoints laying out the basics of heat and temperature, including temperature scales, specific heat capacities and specific latent heats, if anybody is interested in using
Despite all the uncertainty created by Covid, and the specific difficulties associated with moving between schools, it's good to see the PDST School Support system is up and running again. This servi