![]() Moved section on "Indeterminacy in computation" here from Uncertainty principle.- CarlHewitt 2005 July 6 23:03 (UTC).The last two paragraphs can go, as they have nothing to do with this topic, and seem to just be some crazy guy's theory based on a misunderstanding of what the quantum indeterminacy means. The present article on the Uncertainty principle may not express this sufficiently. ![]() the uncertainty relations (as derived by Robertson and Schrödinger anyways) are concerned with relations between concurrent measurements, from given observational data not with predictions based on those measurements. concerned with the predictability of events Vice versa, observations at one particular moment (or at one particular duration t from any selected "reference moment") don't allow to evaluate its energy at all i.e. as proportional to ∂/∂x ().Ī particle with a definitely measured energy has a fundamental limit to how precisely one can specify how long it will have that energyĪ precise measurement of energy (of a particle, in reference to a suitable system) simply cannot be obtained at all from observations by the reference system within a finite duration of each other. Vice versa, observations at one particular location (or at one particular distance x from the "origin" of the reference system, in one particular direction) don't allow to evaluate its momentum at all i.e. a particle with a definitely measured momentum for which there must be a fundamental limit to how precisely its location can be specifiedĪ precise measurement of momentum (of a particle, in reference to a suitable system) simply cannot be obtained at all from observations on reference system locations within a finite distance of each other. ![]() Some comments on quotes from the present article: This article has been rated as Low-importance on the project's importance scale. Philosophy Wikipedia:WikiProject Philosophy Template:WikiProject Philosophy Philosophy articles If you would like to support the project, please visit the project page, where you can get more details on how you can help, and where you can join the general discussion about philosophy content on Wikipedia. This article is within the scope of WikiProject Philosophy, a collaborative effort to improve the coverage of content related to philosophy on Wikipedia. This article has been rated as High-importance on the project's importance scale. This article has been rated as Start-Class on Wikipedia's content assessment scale. Physics Wikipedia:WikiProject Physics Template:WikiProject Physics physics articles If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks. This article is within the scope of WikiProject Physics, a collaborative effort to improve the coverage of Physics on Wikipedia. This article has been rated as Start-Class by WikiProject Vital Articles. Quantum indeterminacy has been listed as a level-5 vital article in Science, Physics. See templates for discussion to help reach a consensus. › 1% or better accuracy and more expensive versions for lab benchtops that have 5 and 6 digits of accuracy.‹ The template below ( Vital article) is being considered for merging. Often they are called a digital Multimeter (DMM) and can come in handheld versions that are light and inexpensive and have. They are usually combined into one unit, a multimeter that may also make other measurements (resistance, temperature). Those early instruments have been replaced by meters with all-electronic amplifiers, digital to analog converters, and digital displays that have a voltmeter input impedance of 10’s of meg-ohms or more and ammeter series resistances that are very low. A 1-volt voltmeter was made with a galvanometer of say 1 milliamp sensitivity and a 1 K resistor (so that 1 mA flowed when 1 V was applied). It is polarized and indicates polarity as well as the magnitude of the voltage.Įarly meters were analog, based upon galvanometers with needles that were electromagnetically deflected linearly with a small amount of current. Ideally, the voltmeter has infinite resistance. An ideal voltmeter is a two terminals device and it senses the voltage between the terminals where they may be connected to a circuit.
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