Did you know? Mass of Double Bass (10 kg) is 25 x Mass of a violin (400 g)
Time since the first fixed wing scheduled air service (110 y)
/fact/time-since-the-first-fixed-wing-scheduled-air-service
Link
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.