The Essex Physicist Behind Energy-Efficient Windows

12/05/2025

How a Local Discovery Powers Tudor Glass Today Who knew that John William Strutt 3rd Baron Rayleigh of Terling in Essex would be so closely connected with our manufacture of Sealed Units at Tudor Glass also in Essex. We have a lot to thank this local man for. John Strutt was an English physicist born in Maldon in Essex, who won the Nobel Prize in Physics in 1904 for his investigations into the densities and properties of important gases. His meticulous research led to a groundbreaking moment in 1892 when he noticed something odd while isolating nitrogen. No matter how he produced it, the nitrogen he obtained was always just a little lighter than the nitrogen found in ordinary air. That tiny discrepancy led him to discover a previously unknown, heavier inert gas—Argon.