Uncertainty principle, Physics

Assignment Help:

Uncertainty principle (W. Heisenberg; 1927):

A principle, central to quantum mechanics, that states two complementary parameters (such as position & momentum, energy & time, or angular momentum & displacement) cannot both be known to infinite accuracy; the more you know regarding one, the less you know regarding the other.

It can be reveled in a quite clear way as it associate to position vs. momentum: To see something (let's say an electron), we ought to fire photons at it; they bounce off and come back to us, thus we can "see" it. If you select low-frequency photons, along a low energy, they do not pass on much momentum to the electron; however they give you a very fuzzy picture, thus you have a higher uncertainty in situation so that you can contain a higher certainty in momentum. Conversely, if you were to fire extremely high-energy photons (x-rays or gammas) at the electron, they would provide you a very apparent picture of where the electron is (higher certainty in position), however would impart great deal of momentum to the electron (higher uncertainty in momentum).

In a more general sense, the uncertainty principle tells us that the action of observing changes the observed in fundamental way.


Related Discussions:- Uncertainty principle

Characteristics of simple harmonic motion, a)  Amplitude : It is the main ...

a)  Amplitude : It is the main value of distance of the particle from its equilibrium position. b) Time period (T): Smallest time interval after which the oscillatory motion

Flashlight, why flashlight suddenly become dim or bright when shaked?

why flashlight suddenly become dim or bright when shaked?

What are the electric generators, What are the Electric Generators? An ...

What are the Electric Generators? An electric generator is a situation in which a loop of conducting wire rotates in an area with a magnetic field. During the first half of t

P2 work, what is the tension in the string when the block is lifted at a st...

what is the tension in the string when the block is lifted at a steady speed when the weight weighs 4.5N and the distance is 90cm

Quantum theory of light, Quantum Theory of Light: Wave theory failed to...

Quantum Theory of Light: Wave theory failed to describe some new effects in 19th century. A German Physicist Max Plank gave theory about the nature of light. 1. Light is emi

What does this notify you about the image, Presume you are asked to find th...

Presume you are asked to find the characteristics of the image of an actual physical object formed by a single lens and you obtain a negative value for the magnification. What does

What is modern view, What is Modern view Modern view : It objects tend...

What is Modern view Modern view : It objects tend to remain in their initial state; force is needed to change motion. Resistance to alters in motion is known as inertia.

Cyclotron, what does it do?function?

what does it do?function?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd