![]() ![]() Remember that the goal of physics is to make models which explain observations. If it did possess that, it would be a so-called hidden variable, most versions of which have been excluded by experiment.Īlthough I agree with Allure's answer (obviously, otherwise I would have to reject Bell's theorem!), at the risk of going off topic (in which case downvotes will let me know), I just wanted to make a comment on physics, models, observations and the operational approach, particularly about this statement in your question:īut measurements apart, does it explain anything about how nature works, in general? Therefore you cannot say "it does possess some momentum, I just don't know what it is". Thus, the uncertainty principle actually states a fundamental property of quantum systems and is not a statement about the observational success of current technology. It has since become clearer, however, that the uncertainty principle is inherent in the properties of all wave-like systems, and that it arises in quantum mechanics simply due to the matter wave nature of all quantum objects. ![]() Heisenberg utilized such an observer effect at the quantum level (see below) as a physical "explanation" of quantum uncertainty. ![]() Historically, the uncertainty principle has been confused with a related effect in physics, called the observer effect, which notes that measurements of certain systems cannot be made without affecting the system, that is, without changing something in a system. It is a specific manifestation of a VERY common phenomenon.Heisenberg uncertainty is not a measurement effect - it's a fundamental property of objects in the physical universe. ![]() My message is this.ĭo not put the Uncertainty Principle on the pedestal. Note that this is classical - no photons needed If you use a specific wavelength (frequency, momentum) for your imaging, then there is a practical limit on how well you can resolve small objects (position) due to tendency of light to diffract. the reason being is that clap is short in time, thus broad in frequency, whilst echo usually occurs at very precise frequency, so if you do not know which frequency the echo is at, a short (broadband) clap will ensure that you will hit that frequency (and others) (2) how easy it is to get echo with a sound from a clap. If you transmit at a specific carrier frequency (momentum) you can only modulate this freqency so fast in time (position) before the bandwidth needed for your signal starts spilling over into nearby channels. At the macroscopic levels of every day life the behavior of a ordinary object is overwhelmingly particulate in nature.Ĭonsider a baseball of mass $0.145\ \mathrm\left(\nu\right)$ being zero everywhere except a small region of $\nu$-axis (precise frequency or momentum). If you know the exact position, there will be some error in determining the momentum, and vice versa. The principle essentially states that you can never simultaneously know the exact position and speed (momentum) of an object because all objects behave like both a particle and a wave at the same time. If by "daily life" you mean things we experience on a day to day basis at the macroscopic level (as opposed to the microscopic level), while the principle applies it does so insignificantly. ![]()
0 Comments
Leave a Reply. |