Matter wave and Wave function: Difference between pages

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{{Merge to|Wave-particle duality|discussion=Talk:Wave-particle duality|date=March 2013}}
In [[quantum mechanics]], the '''Wave function''', usually represented by ''Ψ'', or ''ψ'', describes the probability of finding an [[electron]] somewhere in its [[matter wave]]. To be more precise, the ''square'' of the wave function gives the probability of finding the location of the electron in the given area, since the normal answer for the wave function is usually a [[complex number]]. The wave function concept was first introduced in the legendary [[Schrödinger equation]]. 


In [[quantum mechanics]], a branch of [[physics]], a '''matter wave''' is when you think of [[matter]] as a [[wave]]. The concept of matter waves was first introduced by [[Louis de Broglie]]. Matter waves are hard to visualize, because we are used to thinking of matter as physical object. De Broglie revolutionized quantum mechanics by producing the equation for matter waves.
== Mathematical Interpretation ==
The formula for finding the wave function (i.e., the probability wave), is below:


== Wavelength of Matter ==
<math>i\hbar\frac{\partial}{\partial t} \Psi(\mathbf{x},\,t)=\hat H \Psi(\mathbf{x},\,t)</math>
Based on the fact that light has a wave-particle duality, De Broglie showed that matter might exhibit wave-particle duality as well (simply meaning that matter is made of both particles and waves). Basing his formula on earlier formulas, he arrived at the equation below.


<math>\lambda=\frac{h}{mv}</math>
where ''i'' is the [[imaginary number]], ''ψ (x,t)'' is the wave function, ''ħ'' is the reduced [[Planck constant]], ''t'' is time, ''x'' is position in space, ''Ĥ'' is a mathematical object known as the ''Hamilton operator''. The reader will note that the symbol <math>\frac{\partial}{\partial t}</math> denotes that the [[partial derivative]] of the wave function is being taken.  
 
Where [[λ]] is the [[wavelength]] of the object, ''h'' is [[Planck's constant]], ''m'' is the mass of the object, and ''v'' is the [[velocity]] of the object. An alternate but correct version of this formula is
 
<math>\lambda=\frac{h}{p}</math>
 
Where ''p'' is the [[momentum]]. (Momentum is equal to mass times velocity). These equations merely say that matter exhibits a particle-like nature in some circumstances, and a wave-like characteristic at other times. [[Erwin Schrödinger]] created an advanced equation based on this formula and the [[Bohr model]], known as the [[Schrödinger equation]].  


== Related pages ==
== Related pages ==
*[[Schrödinger equation]]
*[[Quantum mechanics]]
*[[Quantum mechanics]]
*[[Wave-particle duality]]
*[[Bohr model]]
 


[[Category:Wave physics]]
[[Category:Quantum mechanics]]
[[Category:Quantum mechanics]]

Latest revision as of 14:02, 12 November 2014

In quantum mechanics, the Wave function, usually represented by Ψ, or ψ, describes the probability of finding an electron somewhere in its matter wave. To be more precise, the square of the wave function gives the probability of finding the location of the electron in the given area, since the normal answer for the wave function is usually a complex number. The wave function concept was first introduced in the legendary Schrödinger equation.

Mathematical Interpretation

The formula for finding the wave function (i.e., the probability wave), is below:

[math]\displaystyle{ i\hbar\frac{\partial}{\partial t} \Psi(\mathbf{x},\,t)=\hat H \Psi(\mathbf{x},\,t) }[/math]

where i is the imaginary number, ψ (x,t) is the wave function, ħ is the reduced Planck constant, t is time, x is position in space, Ĥ is a mathematical object known as the Hamilton operator. The reader will note that the symbol [math]\displaystyle{ \frac{\partial}{\partial t} }[/math] denotes that the partial derivative of the wave function is being taken.

Related pages