Bharat Rakshak

GuruPrabhu

The interaction is current-dot-current. Before some Guru jumps on me for my careless lingo, the "dot" above refers to "an inner product of two complex bi-spinors". The bi-spinors in this case contain "gamma-mu" to form a "vector" for the purpose of parity tra...

GuruPrabhu

gakakkad wrote:In the 98 test the warhead design was 200 megaton which was restricted to 48 Megaton for the testing purpose ...

Let's not get carried away.

GuruPrabhu

why would frequency be changed if energy of emitted photon is same as that of incident photon ? There is no mechanism to ensure that. Energy levels are discrete and finite. So, how can a material be able to absorb and re-emit photons of all arbitrary energies. Plus, you can check absorption and emi...

GuruPrabhu

... in a medium the photons still travel at c but collide, get absorbed and then emitted etc. we can think of it as the photons taking a detour inside the medium and hence getting late in coming out. This is not correct. If the photon were to be absorbed and re-emitted etc, it would change waveleng...

GuruPrabhu

GP - Did you see the current Scientific American's review of a book .. How the Hippies Saved Physics or When flower power met quantum theory Enjoy! Thanks. I will try to find time to read this book. But I agree with this comment on the website: I hate to nit-pick, but this article is titled "H...

GuruPrabhu

If you want to "see" the electron aka nice microscope ..If you use visible light frequency the electrons are much smaller than the wavelength ( few hundred nm about 10 millions time the size of electron ).. It is much worse than that. Wavelength of light is order 10^-7 m. The upper limit ...

GuruPrabhu

There is a huge amount of confusion and lack of understanding on the isue of nuclear commerce in general, NSG/waivers et al in particular...That is expected, but then it means that the debate in "popular" fora on the issue becomes polemical rather than topical and rational.. Just chill an...

GuruPrabhu

^^^ to provide perspective. It costs Uncle about $1M per soldier per year in Afghan. If it gives Bakis $2B, it is worth 2,000 soldiers. So, the net difference is having 132k soldiers or 130k soldiers. However, if the supplies had to come from the north, the cost goes up by about a factor of 4 (IIRC)...

GuruPrabhu

Injun confused..... So in is khan coming or going in Manas? And if they are successful in ousting the fake Baki, Bakiev and replacing it with an EnMo gubmint, with some 50% increase in capacity, why do they need to keep giving billions to asli bakis and get backsided? These are post withdrawal plan...

GuruPrabhu

tejas wrote:Since the NSG operates by "consesus" cannot India veto any proposal not to its liking once its inside the tent? This would be worth the price of admission.

Exactly. Membership is better than any waiver, clean or dirty.

GuruPrabhu

Got my answer :D ; so for a layman a photon has enough kinetic energy to displace a electron ? (Is this what photoelectric effect is a consequence of ?) Photoelectric effect is when photon commits soosai and sends the electron to its 72. For scattering off an electron (also known as Compton effect)...

GuruPrabhu

One more question I hear that electron's mass and size are known so why/how does hisenberg's uncertainity principle hold true what prevents one from taking a snapshot of an electron in orbit in one of those 's','p' or 'd' orbitals and be able to measure it's position and momentum at any given insta...

GuruPrabhu

uh oh, someone who loves ROFL is offended by ROFL

on page 13 of dhaagaa:

vina wrote:

BENIS lingo has been replaced by indignant self-aggrandization and victim syndrome

GuruPrabhu

For the benefit of pak lurks ... video of SDRE Army evacuating 93000 TFTA soldiers from the wrath of the bengalis GDjfq-CQULk The train scene starting at ~2:30 brings back memories. I recall going to the railway station as these POW trains rolled by. A lot of people had gathered to get a dekho at t...

GuruPrabhu

Cognitive dissonance!

The new benefit of banking is colonial torture!!

GuruPrabhu

For a moment I thought "Physics envy" was about folks looking in from other fields who wished they could have the kind of fun physicists have. :lol: One day banking will explain the inflation problem in cosmology. After all it is just a "bubble". :rotfl: :rotfl: :rotfl: When was ...

GuruPrabhu

^^^ Thanks. All I can say is that if biologists are struggling to find any law, physics has a long way to go! Both biologists and physicists are human beings with different skill sets and tools. This is not a competition but a human endeavor. Most of the research work being done involves teams that...

GuruPrabhu

To me there are two separate aspects. a) There is enough data (embryo is not an ideal symmetric sphere) that a embryo can (theoretical possible) find its 'left' from its 'right' ..b) How exactly it does that may be more interesting etc but it does not violate the present understanding of left/right...

GuruPrabhu

I am simply failing to understand why biological process are considered as a physical process. Is it because everything is ultimately made up of atoms? I am a lay person enquiring and just hoping to get your reasoning behind this assumption. Again, it is not a debate, but a attempt to understand ho...

GuruPrabhu

I would like to make it clear that in no way I am against physics. Physics is as beautiful as it is. I am just against the non-trivial reductionism. IMO, the reductionism in biology has been achieved by biologists themselves. First, it was claimed that all known species arose from single cell organ...

GuruPrabhu

By saying "physics envy" I assumed that you are treating a biological phenomena as a *conserved quantity*. Why do we need to put biology into the ambit of the physics that we know? Please ignore this if my assumption is wrong. Yes, physicists can be blamed for thinking that all physical p...

GuruPrabhu

^^^ what does that mean?

GuruPrabhu

The operative word above was "mechanism". It doesn't need to be mathematical - use the language of your choice to explain it. I don't know. I don't have the language to explain it. You haven't answered my question - Why this enthusiasm with symmetry, btw? Or anti-symmetry for that matter....

GuruPrabhu

Amber G. wrote:
. You are ignoring the fact that you are a creature of training. Who trains the embryo? That is the crux.
What is the crux? That I am ignoring some fact?

No, the crux is that the embryo is not trained. It is not such a difficult point.

GuruPrabhu

kasthuri wrote:I don't deny that it is a mystery. But I don't understand why is this obsession in explaining everything that we know of into the language of math that we know -

The operative word above was "mechanism". It doesn't need to be mathematical - use the language of your choice to explain it.

GuruPrabhu

Rahul M wrote:it's a mystery as long as we are not able to identify the particular mechanism.

Bingo!!

GuruPrabhu

From Amber's link: When Lee and Yang's paper appeared in the October 1, 1956 issue of The Physical Review, physicists were not immediately prompted into action. The proposition of parity nonconservation was not unequivocally denied; rather, the possibility appeared so unlikely that experimental proo...

GuruPrabhu

Rahul M wrote:kasthuri ji, that's what Amber ji referred to last page. I was asking how biological systems do it. there must be a mechanism.

exactly. those who are so sure should be able to outline the mechanism/algorithm.

If not, they should fall in line and agree that it is a mystery.

What will it be?

GuruPrabhu

^^ Check out/google for "Tau-Theta puzzle say Symmetry Destroyed: The Failure of Parity (While parity is conserved in Strong or EM interactions.. not for weak interactions) Good example. And quite timely. Ask yourself how the K_long knew left from right as opposed to K_short. The fact that *yo...

GuruPrabhu

I can still tell my left hand from right hand even if I am floating in water Ask yourself *why* you can do that. I don't doubt that you can. Anyway I am sure I am missing something deep...:) yes, you are. You are ignoring the fact that you are a creature of training. Who trains the embryo? That is ...

GuruPrabhu

May be I am missing the crux.. but what exactly is the "problem"..I can determine 'right'. (and drive on the right hand side... traffic on the road is not symmetric and parity is not conserved in typical traffic pattern). The gene is not at the elementary particle level .. (so even if I d...

GuruPrabhu

^ At a broader level, why do humans mostly have their heart on their left side of the body? ... Can't one just travel a full round on a Mobius strip or Klein bottle (or whatever you guys call it) and then, at least the heart will be on their right side... :mrgreen: The problem is quite puzzling if ...

GuruPrabhu

err, there has been so much posted on gay rights movement, except one simple thing: gay rights are about gay people. Period.

If you are gay you would understand. If you are not, you can still try.

GuruPrabhu

^^^^ Thank for posting that, Bade Saar. It is a nice and compact presentation of several phenomena in chiral symmetry breaking. As you well know, nobody really understands its origin. It is a problem for particle physics in both neutrino sector (parity violation) and strong sector (CP violation/no a...

GuruPrabhu

I beg to differ. Unlike weather, it is not the question of range in biology. It is about the order which every biological system undergoes and our inability to explain this order. Gene regulation and cycle cycle would serve as examples. This is far from weather prediction in which we have multitude...

GuruPrabhu

Yup, physicists will shiver in their dhotis while bankers come and lecture us. No problem. I should have left it alone. Bye. Folks, I hope I was clear in my post. Complexity is not a new concept. In fact it is older than the 30-40 years claimed by Bankers - they started on modeling after physicists ...

GuruPrabhu

Reducing everything to physics that we know of, is what that concerns me. I would not put it that way -- one can not reduce reality. Rather, it is more like expanding physics into realms that it was typically shy of. The problem is best described not by biophysics, but the field of complexity physi...

GuruPrabhu

^^^ ok, I will bite. There *must* be some point to the above in a Physics thread besides letting us all know what model you are working with. I suppose this is the point: I play it on averages. If my model works more number of times than it fails, in expectation , I am not shaheedized! That kind of ...

GuruPrabhu

There is whole world of biology out there which physics have no clue about. The phenomenon of transcription and translation is unexplainable in any mathematical term. QM is not an answer for what happens inside a gene. Gene is not a quantum phenomena I suppose that you have not been reading up on m...

GuruPrabhu

hope this is useful for Amber's problem

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