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  • 0 posts edited
  • 13 helpful flags
  • 208 votes cast
Feb
23
reviewed Looks OK energy of Russian meteor, does it matter whether it explodes or not?
Feb
14
reviewed Approve How can a train locomotive generate enough traction to pull all the coaches?
Feb
14
reviewed No Action Needed Having difficulties finding objects with Celestron Telescope
Feb
14
reviewed No Action Needed Three Pendulum Rotary Harmonograph
Feb
14
reviewed Reviewed Would a laser with four possible energy levels be better than three?
Feb
14
comment Would a laser with four possible energy levels be better than three?
What you mentioned is correct for three-level scheme. What is the advantage of fourth level?
Feb
14
reviewed Reviewed Is aluminium magnetic?
Feb
13
reviewed No Action Needed Crystal visualization software for visualizing lattice with reciprocal vectors drawn in same image
Feb
13
answered What is $\Delta t$ in the time-energy uncertainty principle?
Feb
12
reviewed No Action Needed Three Pendulum Rotary Harmonograph
Feb
12
reviewed No Action Needed Car parking special-relavity puzzle
Feb
12
reviewed Reviewed What grounds the difference between space and time?
Feb
11
comment The difference between the Wannier function and atomic orbit in a tight binding model
My comment is not against DFT. And technically your answer is more or less correct. It just looks strange when something relatively simple is explained using something much more complicated.
Feb
11
comment The difference between the Wannier function and atomic orbit in a tight binding model
It is quite strange that you are trying to explain what Wannier functions are by using arguments from DFT. DFT itself is an approximation which fails in many cases.
Feb
9
reviewed Reviewed Can the lightning be captured and used as power source?
Feb
8
awarded  Custodian
Feb
8
reviewed Reject Thought experiment regarding an object approaching a mirror
Feb
6
reviewed No Action Needed Without gravity, is there still up and down?
Feb
6
reviewed No Action Needed What does “particle number conservation” mean in condensed matter physics?
Feb
6
reviewed No Action Needed Without gravity, is there still up and down?