1l of (4°C) water weighs 1kg. 1kg (of anything) is 1000g. 1g of water is 1cm³. Stack 1000 1cm³ blocks to get a 10m high column. This column exerts 100kPa of pressure on its base. To heat it by 1°C requires 1kcal. And 1N would accelerate it by 1m/s every second.
I had to google how many inches are in 7 feet. And I think that's stupid.
Edit: Dear Americans; I require 7 feet in fathoms. Edit: spelling/grammar
Properly jaw-dropping moment this evening: an e-mail from my US publisher saying that "since it's a science book", they'll publish Blue Machine WITH METRIC UNITS. So I don't have to convert everything to foot pounds per square elephant. In YEARS of writing for the US, this is the first time I have ever had a hint that there is a world outside feet and inches. Progress! #Books #Metric #Science
