By all means have a whinge about's Zoë's mispronunciation of aphelion but don't then mispronounce Lagrange.
#GavinRymill #JustSaying #DoctorWho #Cybermen #TheWheelInSpace #maths #physics
https://www.youtube.com/watch?v=KQfrfOdpOEU

These beautifully nerdy documentaries by #GavinRymill , #JonGreen and #ClaytonHickman are probably the best thing on YouTube, if not the entire Internet.
https://www.youtube.com/watch?v=PnQ7jYMSJsM
#DoctorWho #TARDIS