97,369 reputation
7128265
bio website motls.blogspot.com
location Czech Republic
age 40
visits member for 3 years, 6 months
seen 16 hours ago

Hi, I am a string theorist and a publicist.


Aug
4
comment Particle physics plots
ViXra blog may have nicer labels on y-axis but Phil Gibbs of viXra blog himself is, let's say, a little bit sloppy exactly about the meaning of the y-axis, thinking that the value on the y-axis is some kind of confidence level.
Aug
4
reviewed Approve suggested edit on Particle physics plots
Aug
4
comment Why must gluinos be spin 1/2 instead of 3/2?
Dear Alejandro, I am afraid that you have totally misunderstood or ignored my answer. The spin 3/2 fields are gravitino fields, so their number is the $N$ measuring the extended supersymmetry. Spontaneous breaking of SUSY has no impact on $N$; instead, SUSY breaking may make the gravitinos massive (much like electroweak SUSY breaking makes W+Z gauge bosons massive) but they're still spin 3/2 fields and they're still gravitinos. It's wrong to say that SUSY or other symmetry generators "don't survive" spont. SUSY breaking. They do: they just don't annihilate the vacuum.
Aug
2
answered Why must gluinos be spin 1/2 instead of 3/2?
Aug
1
reviewed Approve suggested edit on Without a reactor vessel breach, how does radiation build-up in containment buildings of troubled nuclear reactors?
Jul
28
reviewed Approve suggested edit on How is angular momentum conserved when a spinning top finally stops spinning?
Jul
27
awarded  Nice Answer
Jul
26
awarded  Enlightened
Jul
26
awarded  Nice Answer
Jul
17
answered Commutation of operators in quantum theory
Jul
15
awarded  Nice Answer
Jul
15
awarded  special-relativity
Jul
12
comment Why is electricity not transmitted wirelessly?
See similar gadgets - transmiting at longer separation - at youtube.com/watch?v=-2zHlQqJ3GM and web.mit.edu/newsoffice/2007/wireless-0607.html (MIT projects) - I personally bet that those gadgets will ultimately become frequent in the households. For longer-distance power transmission, it's inefficient - unless you transfer the energy via lasers whose beams go to a clear destination.
Jul
12
comment Why is electricity not transmitted wirelessly?
These toothbrushes google.com/… are recharged through plastic. I once showed it to my ex-colleague, physics Prof Shiraz Minwalla, and he was as puzzled as I was: how do the charges get to the toothbrush when only (insulating) plastic matter is in contact (which is the case to avoid short circuit in the bathroom)? Haha, energy doesn't need charge transfer on long distances - electromagnetic waves are enough.
Jul
12
reviewed Approve suggested edit on Why is electricity not transmitted wirelessly?
Jul
11
reviewed Approve suggested edit on What is so good about diffractive optics?
Jul
11
reviewed Approve suggested edit on Why is gravitation force always attractive?
Jul
10
reviewed Approve suggested edit on Calculating time for a fully charged UPS
Jul
8
reviewed Approve suggested edit on Why glass is transparent?
Jul
8
reviewed Approve suggested edit on Madelung transformation