Yes, the potentials look different when your eyes are open or closed. They look different because of the neural noise produced by the neural activity occurring in the visual system that is present when our eyes are open.
When our eyes are closed, there is less neural noise present, which leads to cleaner and more easily discernible signals.
2. The amplitude of the potential is affected by how far you move your eyes and how quickly. When you move your eyes, the potential changes in amplitude due to changes in the orientation of the neural sources generating the signal. The amplitude will also change depending on the speed of the eye movement, with faster eye movements producing larger potentials.
Other variables that can affect the amplitude of the potential include the size and distance of the object being viewed and the intensity of the light.
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Show that the free-particle one-dimensional Schro¨dinger
equation for the wavefunc-
tion Ψ(x, t):
∂Ψ
i~
∂t = −
~
2
2m
∂
2Ψ
,
∂x2
is invariant under Galilean transformations
x
′ = x −
3. Galilean invariance of the free Schrodinger equation. (15 points) Show that the free-particle one-dimensional Schrödinger equation for the wavefunc- tion V (x, t): at h2 32 V ih- at is invariant u
The Galilean transformations are a set of equations that describe the relationship between the space-time coordinates of two reference systems that move uniformly relative to one another with a constant velocity. The aim of this question is to demonstrate that the free-particle one-dimensional Schrodinger equation for the wave function ψ(x, t) is invariant under Galilean transformations.
The free-particle one-dimensional Schrodinger equation for the wave function ψ(x, t) is represented as:$$\frac{\partial \psi}{\partial t} = \frac{-\hbar}{2m} \frac{\partial^2 \psi}{\partial x^2}$$Galilean transformation can be represented as:$$x' = x-vt$$where x is the position, t is the time, x' is the new position after the transformation, and v is the velocity of the reference system.
Applying the Galilean transformation in the Schrodinger equation we have:
[tex]$$\frac{\partial \psi}{\partial t}[/tex]
=[tex]\frac{\partial x}{\partial t} \frac{\partial \psi}{\partial x} + \frac{\partial \psi}{\partial t}$$$$[/tex]
=[tex]\frac{-\hbar}{2m} \frac{\partial^2 \psi}{\partial x^2}$$[/tex]
Substituting $x'
= [tex]x-vt$ in the equation we get:$$\frac{\partial \psi}{\partial t}[/tex]
= [tex]\frac{\partial}{\partial t} \psi(x-vt, t)$$$$\frac{\partial \psi}{\partial x} = \frac{\partial}{\partial x} \psi(x-vt, t)$$$$\frac{\partial^2 \psi}{\partial x^2} = \frac{\partial^2}{\partial x^2} \psi(x-vt, t)$$[/tex]
Substituting the above equations in the Schrodinger equation, we have:
[tex]$$\frac{\partial}{\partial t} \psi(x-vt, t) = \frac{-\hbar}{2m} \frac{\partial^2}{\partial x^2} \psi(x-vt, t)$$[/tex]
This shows that the free-particle one-dimensional Schrodinger equation is invariant under Galilean transformations. Therefore, we can conclude that the Schrodinger equation obeys the laws of Galilean invariance.
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