Screenshots with subtitles from Episode 4 of Series W of QI, first broadcast on 11 November 2025.
They show a complete jumble of measurements units being used, with a wavelength in the millimetre-to-metre range being described using using inches.
For a TV show @qi.com in 2025 to be using #inches to measure a wavelength in the millimetre-to-metre range is #QuiteInteresting.
FUN FACT: Since the first UK radio stations began broadcasting in the 1920s, wavelengths have been given in #metres.
#metricsystem #SI #QI
www.bbc.co.uk/iplayer/epis...