On this particular point, the conspiracists are right. The BBC did use ESA's ground temperature predictions without explanation, as I pointed out at the time. There was, however, a heatwave. (View Post)

The problem with heat pumps is that the efficiency is dependent on the output temperature being as low as possible. [Theoretical maximum efficiency is Thot / (Thot - Tcold) although you won't ge… (View Post)

Cars eventually became much cheaper than running horses and a carriage. Compared to the price of running a car in the 1970s, cars today are ridiculously cheap. When we are all running electric cars o… (View Post)

... See my other post. You need a colour chart to go with the camera (and raw output) otherwise you are dependent on the camera's guess at white balance. (View Post)

A PB Pedant Strikes... I recently had to take a load of photographs of leaves with a DSLR to determine their colour (spectrometry on the cheap). Don't ask... Without a reference colour chart [eg… (View Post)