2006-08-30 06:43:10 · 5 answers · asked by confused 3 in Science & Mathematics ➔ Physics
I think what you are looking for is Heisenburg Uncertainty Principle.
In short it says that you can't. That the very act of making a measurement on a subatomic level changes the thing you are measuring.
2006-08-30 06:56:48 · answer #1 · answered by sparc77 7 · 0⤊ 0⤋
Theory of measurement ;when you are measuring a changing quantity with time it is impossible to obtain a intantaneous value.
We can only measure average value. Because as soon as you measure a distance at one point the time has already changed. So velocity measurement involoves knowing distance travelled divided by period .This is an average. So the instantaneous value can only be calculated ether by formula or estimation. Since Estimates are never exact the most probable scenario can only be used.
2006-08-31 03:07:39 · answer #2 · answered by goring 6 · 0⤊ 1⤋
Perhaps if you had a totally passive way to measure the energy coming off, but your detectors would have to be quite far away to not affect with gravity or magnetism or anything else. So you can get down to very minimal interference and account for this interference, but it's basically impossible to not affect the result.
As far as we know so far.
2006-08-30 07:22:04 · answer #3 · answered by Anonymous · 0⤊ 0⤋
By calculating how much affect you have on the result and subtracting that from the measurement
2006-09-03 06:02:35 · answer #4 · answered by Anonymous · 0⤊ 0⤋
You can't. That was the beginning of Heisenberg's uncertainty principle.
2006-08-30 06:50:08 · answer #5 · answered by Anonymous · 0⤊ 0⤋