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Quantum Mechanics
why electron doesnot fall on the nucleus?
Quantum Mechanics
find zero point energy.mass fixed tospring,streched length and force r given
Quantum Mechanics
It's a problem about Heisenberg principle.
We know that an electron is moving along x-axis with a given velocity and a given uncertainty.
What can we say about its motion along y-axis?
We know that an electron is moving along x-axis with a given velocity and a given uncertainty.
What can we say about its motion along y-axis?
Quantum Mechanics
The gap between valence and conduction bands in diamond is 5.47 eV.
(a) What is the maximum wavelength of a photon that can excite an electron from the top of the valence band into the conduction band? In what region of the electromagnetic spectrum
does this photon lie?
(b) Use your calculations to explain why pure diamond is transparent
and colourless.
(c) Most gem diamonds have a yellow colour. Explain with the help of an
energy diagram how impurities in the diamond can cause this colour.
Explanation will be preferred too. Thank you.
(a) What is the maximum wavelength of a photon that can excite an electron from the top of the valence band into the conduction band? In what region of the electromagnetic spectrum
does this photon lie?
(b) Use your calculations to explain why pure diamond is transparent
and colourless.
(c) Most gem diamonds have a yellow colour. Explain with the help of an
energy diagram how impurities in the diamond can cause this colour.
Explanation will be preferred too. Thank you.
Quantum Mechanics
prove that the unitary transformation Rz(phi) commutes with Sz ?
Quantum Mechanics
A basketball player makes a jump shot. The .6-kg ball is released at a height of 2 m above the floor with a speed of 7.2 m/s. the ball goes through the net 3.2 m above the floor at a speed of 4.2 m/s. what is the work done on the ball by air resistance, a non conservative force?
Quantum Mechanics
Does the fact that we observe the end of the universe cause it to manifest and effectively expand as a result?
Quantum Mechanics
Show that the unitary transformation Rz(phi) that represents in spin space a rotation about the z-axis bt an angle phi can be written as :
Rz(phi)=exp (-iSz phi / h)
Rz(phi)=exp (-iSz phi / h)
Quantum Mechanics
How can I multiply the initial density matrix by the time evolution (U) to get the density matrix at any time ?
Quantum Mechanics
Diamagnetism: What is the most effective way of levitating water in a symmetrical sphere, doing research i have noticed that diamagnetism would be perfect due to the way it naturally repels and the simple fact that water itself is diamagnetic, i can't increase the magnet strength by the way, maybe i could make the water super conductive some how? theoretical answers are fine as well!
