elektra
Platinum Member
Hahaha.If I give you a metal bar and a ruler or a tape measure, can you measure it's length? I'm going to make a huge presumption and assume you will answer yes, because the bar is not changing (though it is but by too little to matter here). But do you think that ruler is perfect? Do you think that tape measure is perfect? Do you think your eyes are perfect or the hands you hold it all with? So neither that ruler nor that tape measure nor the best human eyes and the steadiest human hands on the whole planet are going to allow us to determine the ACTUAL length of that bar.
A metal bar, a ruler. In my career which is science we call that metal bar, a SCALE.
Our 6 inch scales are calibrated under specific conditions and temperatures against a standard.
We do determine the actual length of metal, period.
We know the exact length of bars.
Crick, what we can not measure, from space is the ocean. An impossibility.