1,770 reputation
620
bio website eutactic.wordpress.com
location Australia
age 29
visits member for 3 years, 9 months
seen May 17 at 1:08

grad student, computational quantum chemistry

Interests include chemistry, high performance computing, graphics, art, typesetting, programming (python, Java, C#, XAML)


Jun
22
comment Does there exist a free good molecule / atom simulation software?
@user1247 - sorry, that's 'molecular mechanics'
Jun
19
comment Do the rings in Mass Effect's mass relays (2-axis gimbal) describe a stable rotation?
Interesting question. Are you assuming the inner and outer rings are coupled, as in a 2-axis gimbal?
May
15
comment This sentence makes no sense, electrostatics and electrons moving in a conductor - current
The OP is asking about electron motion in the absence of potential.
May
15
comment This sentence makes no sense, electrostatics and electrons moving in a conductor - current
There's obvious current in that illustration.
Apr
11
comment Creation of Nuclear Isomers
very lucid answer!
Apr
10
comment Understanding particle's space travel
I had a quick look: the review cites a field of 6 picotesla near the solar system (cf. earth's field of 25-65 microtesla). I imagine that over large distances this will probably lead to profound deflections of charged particles. The review also notes that charged particles moving through the field will give off synchrotron radiation.
Apr
10
comment Understanding particle's space travel
If we're talking about weak interactions, do you know to what extent the galactic magnetic field would deflect charged particles traversing interstellar space?
Apr
10
comment Understanding particle's space travel
Bear in mind that the angular diameter of the Earth from Betelgeuse is absolutely tiny (1.2*10^-10 degrees!). As such, unless an event is very tightly collimated, the inverse square law will attenuate the intensity of the radiation dramatically. Which perhaps isn't saying much as supernovae (which I assume you are interested in by reference to Betelgeuse) are very very very very bright.
Apr
3
comment Orbits for space missions
Possibly relevant reading: Hohmann transfer orbits are a conceptually very straightforward and efficient way of getting from one orbit to another. You just create an elliptical orbit with an apoapsis equal to the radius of a target orbit and circularise when you reach apoapsis.
Mar
23
awarded  Excavator
Mar
23
revised Scattering of phonons and electrons within solids
Fixed LaTeX markup (I believe my changes are equivalent), spelling, capitalisation.
Mar
23
suggested suggested edit on Scattering of phonons and electrons within solids
Mar
15
answered Can a light beam be used as a wire for telephony?
Feb
27
comment Quantum entanglement faster than speed of light?
@KonradRudolph - Both appear to be correct: the no-cloning theorem forbids superluminal communication through cloning of states. However this is 'sufficient but not necessary', as the article states, as the theorem does not say anything about other possible techniques that don't employ cloning of states. Perhaps I should have said 'any sneaky tricks (that employ cloning of states)' to be more clear.
Feb
12
awarded  Yearling
Feb
5
comment Sunspots formula
There's a fun quote attributed to John von Neumann on this topic: "With four parameters I can fit an elephant, and with five I can make him wiggle his trunk."
Jan
16
comment Do amorphous metals undergo conchoidal fracture?
For example, the alloys produced by liquidmetal technologies.
Jan
11
comment Software to simulate and visualize atoms?
Correcting my earlier statement: nuclear wavefunction and B.O. can happily coexist, according to a researcher in the field.
Jan
10
awarded  Promoter
Jan
3
comment Software to simulate and visualize atoms?
@RonMaimon - Glad CPMD was of interest to you. It's certainly not the only 'ab initio MD' method but it seems the state of the art is very experimental. I saw a few lectures recently on 'quantum dynamics' which take traditional ab initio calculations into the time evolution realm but it seems fairly bleeding edge, e.g. AFAIK the Born-Oppenheimer approximation needs to be replaced with a nuclear wavefunction. Incidentally, this is just mind-boggling: petachem.com/demo.html