John Henry Poynting blue plaque

This blue commemorative plaque records: John Henry Poynting, first Professor of Physics, determined the mass of Earth in Birmingham in 1890 Recorded plaque organisation: University of Birmingham.

John Henry Poynting was a British physicist who made significant contributions to electromagnetism and thermodynamics; he is remembered for formulating Poynting's theorem and for his work on determining the mass of the Earth.