Allowing seawater to evaporate and weighing the the remaining salts.
-Due to the principle of constant proportions -It can be accurately measured with a simple chemical analysis
Its salinity.
they are measured with parometers
salinity is usually measured as grams of dissolved solids per kilogram of water
Yes, the size of the universe is absolutely falsifiable because the universe has not been accurately measured. Once the universe is accurately measured, it will be much more difficult to falsify its size.
The volume of gases is measured with gas-meters.
It is expressed as 'permille' or parts per thousand
The volume of gases is measured with gas-meters.
atomic clocks
Heisenberg uncertainty principle states that , the momentum and the position of a particle cannot be measured accurately and simultaneously. If you get the position absolutely correct then the momentum can not be exact and vice versa.
Its speed has been measured accurately, using lasers.
Its speed has been measured accurately, using lasers.