meta user
network profile
| bio | website | |
|---|---|---|
| location | Greece | |
| age | 73 | |
| visits | member for | 2 years, 4 months |
| seen | 7 mins ago | |
| stats | profile views | 3,319 |
Retired experimental particle physicist
|
May 10 |
answered | Sterile Neutrinos as Dark Matter |
|
May 10 |
comment |
What do ants see? I see you were demoted once again :) . |
|
May 10 |
comment |
What do ants see? @Sam I am sorry you had to go through this, which could have been avoided if you had read the link you provided more carefully, because it has all the numbers. Do not be discouraged, many of us have been through this with Lubos, if not here, on his blog, when we manage to blow his short fuse. He is a great teacher though. |
|
May 9 |
comment |
7 GeV dark matter particle: how particle accelerators missed it? Well, unless one has a TOE how can one assume how much existed at the beginning of the big bang with respect to normal mass? Maybe this is just the right density for the dilution due to the expansion after only gravitational interactions? |
|
May 9 |
revised |
7 GeV dark matter particle: how particle accelerators missed it? added 201 characters in body |
|
May 9 |
answered | 7 GeV dark matter particle: how particle accelerators missed it? |
|
May 9 |
answered | Why do power lines sag when they are heated up? |
|
May 9 |
comment |
Tsunami evacuation baloon This is not a physics question, rather a logistics one. If you can afford tethering a balloon to your back yard and the maintenance of keeping it inflated, of course it would be an ideal solution in your situation. I do not know how expensive this would be. Maybe a helicopter would compete in expense and be more useful. |
|
May 9 |
comment |
Is this a weather phenomenon or an instrumental artifact? Interesting. I think it is "well known" that cities get more rain. It would need a number of such photos to prove statistically that rain is circular around population centers. Is there no archive? |
|
May 8 |
comment |
Merge different wavelength rays @iuliux Maybe one should stress that frequencies of light and perception of colour do not have a one to one correspondence. For paintings one can use three colours of paint and get all the palette, but it is a perception by the way the receptors in our eyes and the programming in our brains work. I think the inventor of polaroid, E.Land, found he could produce fully coloured pictures with just two frequencies: en.wikipedia.org/wiki/Two-color_system |
|
May 8 |
comment |
stability of hypothetical lunar atmosphere As the models of the moon's creation give a common origin with earth, and as the universe is 14 billion years old, one would expect to have an N2 O2 H2O atmosphere on the moon, with these numbers. Maybe the solar wind and the solar magnetic field play a big role then? |
|
May 8 |
answered | Effect of spacetime curvature on the sea of virtual particles |
|
May 8 |
revised |
Is it possible to work on physics independently outside academia? Hawking instead of Hawkins |
|
May 8 |
comment |
Is it possible to work on physics independently outside academia? @Gordon oh dear dear me. And who is John Baez? A grammar teacher? |
|
May 7 |
comment |
On black holes, Hawking radiation and gravitational atoms @qftme Your questions require time consuming answers from experts. Most of us are not working in this field though may have some framework for answering some of the questions. For example I "know" that particles are vibrations on strings ( or equivalent more complicated constructs) and the energies of these vibrations go all the way up to the masses of black holes. My knowledge is encyclopaedic so I cannot undertake an answer. You might enjoy searching motls.blogspot.com where Lubos has many expositions on strings etc. |
|
May 7 |
comment |
A professional physics career without a degree? a related question physics.stackexchange.com/questions/7491/… |
|
May 6 |
comment |
Is it possible to work on physics independently outside academia? good for you , Carl, bravo. |
|
May 6 |
revised |
Why all rocks are not orbiting bigger rocks in space? added clarification ; added 1 characters in body |
|
May 6 |
answered | Why all rocks are not orbiting bigger rocks in space? |
|
May 5 |
comment |
What direction does the force vector point in regards to Earth's E and B fields? though you have only examined the effect of the magnetic field. There exists an electric field too en.wikipedia.org/wiki/Natural_electric_field_of_the_Earth |
