Saturday, January 31, 2009

On Precision

Do YOU know your car’s height down to the millimetre?  You’d better…

Saw this in Southbank:

maxheight

3 comments:

Vasilisa said...

well technically it ends with a zero, which means it's 208cm... so one needs to know their car down to a centimetre... would've been worse if it was smth more like 2083mm. :)

Ilya said...

I would argue that the presence of the trailing zero implies that the measurement is supposed to be precise down to the millimeter, regardless of whether it fell on a zero or not. "Significant figures" and all that. :)
Still, even if it's a centimetere...

Rob said...

This is first-year physics material! Indeed, the trailing zero indicates an accuracy of four digits, ie 2080mm +/- 0.5mm. The carpark must have built to exceedingly precise specifications -- let's the hope the work was carried out accurately. Remember, accuracy is not the same as precision...