949 reputation
721
bio website migdal.wikidot.com/en
location Castelldefels, Spain
age 28
visits member for 3 years
seen Dec 16 at 11:03

A PhD student in Theoretical Quantum Optics at ICFO. Alumnus of Physics and Mathematics at the University of Warsaw. Interested in quantum optics & quantum information, applied optics and mathematical modeling in psychology. Dedicated to education of gifted schoolchildren (as both tutor and organizer). In free time enjoys photography, hiking and psychology (esp. cognitive science).


Aug
17
comment Why did life not evolve to use radio?
A good point with amplification. For radio you want sine-wave amplifiers, not cascade amplifiers, so here there may be a problem as well. However, the first step is to have good wires...
Aug
16
comment Why did life not evolve to use radio?
Thermal noise is devastating for molecular devices, as detectors/emitters (two-level systems) are all the time saturated (so e.g. a photon has the same probability of being absorber and to steal excitation). For macroscopic currents there is no such mechanism and one can easily go beyond the thermal noise (so for animals its only a technical problem of getting good enough conductors and generators of high frequencies). Moreover, AFAIK water absorbs most of radio waves (it's why submarines use sonars, not - radars), so radio communication would work only for land animals.
Aug
15
awarded  Nice Answer
Aug
15
awarded  Announcer
Aug
15
revised Why did life not evolve to use radio?
added 6 characters in body
Aug
15
comment Why did life not evolve to use radio?
You don't need a lot of energy to communicate anything. Anyway, radio and wifi works, so it's not a good argument.
Aug
15
awarded  Organizer
Aug
15
revised Why did life not evolve to use radio?
added 6 characters in body
Aug
15
revised Why did life not evolve to use radio?
edited tags
Aug
15
answered Why did life not evolve to use radio?
Jul
20
comment How does the brain's energy consumption depend on mental activity?
I found Does Thinking Really Hard Burn More Calories? - Scientific American going in the same way - "Unlike physical exercise, mental workouts probably do not demand significantly more energy than usual. Believing we have drained our brains, however, may be enough to induce weariness".
Jul
13
awarded  Enlightened
Jul
13
awarded  Nice Answer
Jun
28
comment Epilepsy explained by computational neuroscience
@ArtemKaznatcheev Yes, as long as one does not need to read one's life story before the actual question. Personally I am irritated by 'questions' in which I need to search for the actual question.
May
28
comment What is the similarity between how cells organize themselves to form a human and how humans organize themselves to form a society?
There are lot of similarities at different scales (say, from molecules to the whole ecosystem). However, making a "dictionary" based on one's common sense may be very misleading, unless one can support it with numerical or experimental data. Moreover, people like "telling stories" and while some analogies (or metaphors) can be good for the purpose of didactics, not necessary they go further. Compare with: trees are humans, forests are cities, ... - while it can make a good talk (e.g. comparing complex ecosystems), most of the corollaries don't work.
May
26
comment Below which temperature human muscles don't work?
I am not talking about anything damaging, rather about a common experience for anyone doing winter sports, or even hiking in the rain.
May
26
comment Below which temperature human muscles don't work?
Nice, but a quick skim says that they showed only small deviations. I am the most interested when muscles strength is only fraction (say, <25%) of the maximal one, or they are not working at all.
May
23
comment Does becoming martyr have an evolutionary advantage?
If it does not pay on genetic level (as they die, perhaps without offsprings), it may be beneficial on memetic level - i.e. spread (or defend) the idea of country, religion, ideology etc. I does not even need to give any (genetical) advantage to others.
May
22
comment Epilepsy explained by computational neuroscience
To meet the standards of SE please consider concentrating on asking a well-pointed question (not on personal story, urgency, ...).
May
22
awarded  Critic