If you're focusing on trying to watch the speed, then you may be off a bit when measuring the exact time across the finish line, and vice versa. Uncertainty relations are mathematical theorems as well as physical statements so if we begin with a proof we should end up with an exact definition of what we are trying to understand. The physical nature of the system imposes a definite limit upon how precise this can all be. We'll see the car touch the finish line, push the stopwatch button, and look at the digital display. ![]() Heisenberg also made contributions to the theories of the hydrodynamics of turbulent flows, the atomic nucleus, ferromagnetism, cosmic rays, and subatomic particles. In equation form, (29.7.12) E t h 4, where E is the uncertainty in energy and t, is the uncertainty in time. Heisenberg was awarded the 1932 Nobel Prize in Physics 'for the creation of quantum mechanics'. Heisenberg Uncertainty for Energy and Time There is another form of Heisenberg’s uncertainty principle for simultaneous measurements of energy and time. In this classical case, there is clearly some degree of uncertainty about this, because these actions take some physical time. He is known for the uncertainty principle, which he published in 1927. We measure the speed by pushing a button on a stopwatch at the moment we see it cross the finish line and we measure the speed by looking at a digital read-out (which is not in line with watching the car, so you have to turn your head once it crosses the finish line). ![]() We are supposed to measure not only the time that it crosses the finish line but also the exact speed at which it does so. ![]() Let's say that we were watching a race car on a track and we were supposed to record when it crossed a finish line. Though the above may seem very strange, there's actually a decent correspondence to the way we can function in the real (that is, classical) world.
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