Saturday, January 28, 2012

Member Blogs

Who Is God?

This article is dedicated to Mr. Bhimsen Panda, my role model & teacher, who have been a source of inspiration & support for me. Sir, this is for you.

Who is God? I think this is by far the most controversial or most asked question of all time which had largely affected our way of thinking. God is our creator, a being which is responsible for the beginning of our universe. Throughout the history, people have been giving many ideas or views. In response to these ideas, people started to believe in some forms of powers which rule the cosmos. After the formation of human civilization, people started to break apart within many believes which is called religion. Today there are Christianity, Islam, Hinduism & Buddhism as major religions along with other kind of minor religions. Every religion has its ideas about the nature. Each & every religion believes in different forms of superpower. All these are OK till social level, but when it comes to science, all these are dismissed. Science doesn’t believe in creator or God because there’s no experimental prove of existence of any kind of super being throughout the universe. Science makes God meaningless. Almost no scientist believes in God. All are atheist. But there’re still few of them, who keep believe in a creator. Prof. Stephen Hawking, regarded as one of the greatest physicist & cosmologist of the century, said in his book The Grand Design that science makes God unnecessary. Only the laws of nature rule. Now I want to be a scientist (astrophysicist) in future. So what view do I hold?

Few years ago, I wasn’t thinking on all these matters as I was too young. But all of a sudden, some days or months earlier, I started to think on the topic. Who is our God? Who created us? The top most priority goes to laws of nature. So, for me laws of nature is the creator or God. Every where we see, every thing is dominated by laws of nature. But still questions arise, was there … Continue reading …


Space:Our Next Home-II

What are the main steps? : How space science will become the basis OF existence OF LIFE

We’ve the problems of expedition to space. But no solutions to these nagging problems. Without any solution it’ll be impossible to go to space & we all have to die violently on earth. This is a matter of concern. But I think that we can advance some of our present fields to get the solution. What we have to do is to develop & repair space science. Space science is the study of everything beyond earth’s atmosphere. Space science consists of following basic disciplines:

1. Astronomy:

i) Astrophysics.

ii)  Planetary Science.

iii)  Exobiology.

2. Aerospace:

i) Aeronautical Engineering

ii) Astronautics

3 . Space colonization:

i)  Space colonization justification.

ii) Space colony location

iii) Space colonization agriculture

iv)  Space colony construction etc.

4. Space Defense

These are the fields of space science. Basically, we’ve Astronomy which further consists of Astrophysics, Planetary Science & Exobiology. Then, we’ve Aerospace which also consists of Aeronautical Engineering & Astronautics. Then, we’ve Space colonization which consists of Space colonization justification, Space colonization agriculture etc. At last, we’ve Space defense which doesn’t consists of any specified sub-fields. Note here that some of these subfields have more subfields. As not important for our present discussion, we’ll not mention them. These are the subjects. Now, these all subjects are the basis of space science & the basis of existence of life in future (after 200 years). What we have to do is to develop all these subjects & repair it whenever needed. Though these are the developed fields, there’re more to be developed.

Among these list, Astronomy is most developed. The developments in this field are   rapid. Though, there are developments, there are still more developments to be done in this area. Astronomy is the detailed study of celestial objects.

Next is Aerospace. It second most developed. Though there are rapid developments in this field, there are necessarily more to be done. Aerospace is the study of instruments needed both for Astronomy & Astronautics.

Then Space colonization is third most developed. … Continue reading …


Space:Our Next Home-I

Earth was our home, is our home. But will it be our home tomorrow, in our future? It’s a question among scientists. It’s also among every people & it should be a matter of discussion among every terrestrial being. As discussed in my last post, Life: The Greatest Masterpiece OF The Universe, earth is a place where every situation is favorable for life to exist. After the long searching of nature, nature found earth to seed life. But after the notorious deed of human beings, life on earth is no more possible. The existence of life on earth is a matter of question. By the human activities, existence of life on earth is not possible to live. Almost 80% of the earth is polluted. So, living on such a place is not possible until 200 years or so. This idea is what told by British Astrophysicist & Cosmologist, Prof. Stephen Hawking. He told that living on earth is not worth full. After 200 years, we have to leave the earth. Earth will totally destroyed by another centuries. Prof. Hawking, in 50th anniversary NASA lecture told that space is what our next destination. It bears no meaning to waste more money on earth. Earth will not be suitable to live. So, better we should use our economy in space. He said.

These saying of Stephen Hawking are not lie or fiction. It’s a fact. We see that everywhere there are pollutions. Pollution is something which will not leave us until we leave them. But the time end. Nature gave chances for us several times. But we humans had not taken care of it. We just underestimated all of them. But this is our last chance. We will not get chances anymore. 80% of our earth is destroyed. In the following years, we’ll complete these 20%. And after that do you know what will happen? We’ll get such hostile, dangerous & cruel death which we have not ever imagined. It would be more dreadful than nightmare or most horror movies. We pollute our mother earth in various innumerable ways. Sometimes, we … Continue reading …


What Will Be The Fate Of The Universe?

Every one of us wonders what will be the end of the universe? How it’ll end? As the big bang was the beginning of the universe, what’ll be the fate of the universe? Earlier, we gave concentration on the beginning of the universe much more, now we are giving some more attentions on the fate of the universe (though scientific researches & concentrations are still going on). This question is more common among astrophysicist & cosmologists.

For the kind information of readers, I’d like to introduce the definition of cosmologist & cosmology. Cosmologists are actually astrophysicists who study cosmology as their special research field. And cosmology is the sub-part of astrophysics which is the study of the whole universe as a whole in large-scales, its origin, end, future developments & nature. For more information, Prof. Stephen Hawking of Cambridge University, the greatest physicist of the era after Albert Einstein, is also a cosmologist. His field concentrates on cosmology.

It’s a matter of discussions among top cosmologists around the globe that what’d be the probable end of the universe. We’ve well got a good idea on the beginning of the universe. But there are still a lot to know about the universe.

So, let’s begin a journey through the deepest of the fate of the universe unveiling the greatest mysteries of the universe where truth is much stranger than the reality. In the beginning of the century, scientists have developed a good insight on the end of the universe. Although, there are a lot of controversies, cosmologists have sorted out some of the best theories.

At the very beginning, we’ll discuss thebig crunch theory. Big crunch theory is a theory which states that the universe will end in a collision course. As estimated by Wilkinson Microwave Anisotropy Probe (WMAP) in 2001 that the 26% of the universe is filled with matter particles (22% non-baryonic & 4% baryonic), we expect that the universe will end by a collision by gravity. The idea is that after expanding the universe to a critical state, the universe will start to collapse … Continue reading …


The way I look My Universe

This book is all about my point of view how I look our universe.

You will see the working of our universe in my point of view.

So the book is named the way I look my universe. Every member whether living and non living objects of the universe has the rights to comment on it.

If every member is agreed of my point of view then the name becomes “The way we look our Universe”.

That’s my goal.

This book is dedicated to my parents.

Animesh Sahu

 

My  Concept:

The whole universe follows some common rule.

  1. Every Thing that starts in the universe goes to maximum and comes to minimum. That means the universe tries to maintain a balance between 2 opposite things. The maximum and minimum for any system is driven by the force factor involved in the system.

The example of 2 opposite things are :

KE(Kinetic Energy) & PE(Potential Energy)

Lets go to Big Bank theory of Universe creation :

There was a point . Due to a blast in the point the universe is created and it is expanding.

The blast occurred due to the energy that I call as the force factor (The unbalancing force).

It is the extra energy which will not allow the universe to keep in a static state anymore.

Or the extra energy is so much that the universe will never come back for contraction.

I believe in the 1st probability and also I will prove it.

1. Universe is isolated system. What ever the work done no matter it will a PE is developed which will lead to contraction.

  1. There is another way to prove, there are many systems and subsystems and sub-subsystems etc are present in the Universe. Universe is the main system, galaxy is subsystem, Solar System is sub-subsystem and Earth is sub-sub-subsystem and so on.

The way a subsystem will behave is the replica of system functionality. Any subsystem starts goes to maximum and comes back to minimum. The whole force factor is distributed among the system and subsystem and so on. The force Continue reading …


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The latest in physics research

Astrophysics

Wide-Field Precision Kinematics of the M87 Globular Cluster System. (arXiv:1110.2778v1 [astro-ph.CO])

We present the most extensive combined photometric and spectroscopic study to date of the enormous globular cluster (GC) system around M87, the central giant elliptical galaxy in the nearby Virgo cluster. Using observations from DEIMOS and LRIS at Keck, and Hectospec on the MMT, we derive new, precise... [Continue reading]


A new cosmological distance measure using AGN. (arXiv:1109.4632v1 [astro-ph.CO])

Accurate distances to celestial objects are key to establishing the age and energy density of the Universe and the nature of dark energy. A distance measure using active galactic nuclei (AGN) has been sought for more than forty years, as they are extremely luminous and can be observed at very large distances.... [Continue reading]


CANDELS: Constraining the AGN-Merger Connection with Host Morphologies at z~2. (arXiv:1109.2588v1 [astro-ph.CO])

Using HST/WFC3 imaging taken as part of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS), we examine the role that major galaxy mergers play in triggering active galactic nuclei (AGN) activity at z~2. Our sample consists of 72 moderate-luminosity (Lx ~ 1E42-1E44 erg/s) AGN... [Continue reading]


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General Relativity and Quantum Gravity

Light Loop Echoes and Blinking Black Holes. (arXiv:1110.2789v1 [astro-ph.HE])

Radiation emitted near a black hole reaches the observer by multiple paths; and when this radiation varies in time, the time-delays between the various paths generate a “blinking” effect in the observed light curve L(t) or its auto-correlation function xi(T)= <L(t)L(t-T)>. For the particularly... [Continue reading]


Supersymmetric Solutions in Six Dimensions: A Linear Structure. (arXiv:1110.2781v1 [hep-th])

The equations underlying all supersymmetric solutions of six-dimensional minimal ungauged supergravity coupled to an anti-self-dual tensor multiplet have been known for quite a while, and their complicated non-linear form has hindered all attempts to systematically understand and construct BPS solutions. In... [Continue reading]


(An)Isotropic models in scalar and scalar-tensor cosmologies. (arXiv:1110.2775v1 [gr-qc])

We study how the constants $ G$ and $ \Lambda$ may vary in different theoretical models (general relativity with a perfect fluid, scalar cosmological models (\textquotedblleft quintessence\textquotedblright) with and without interacting scalar and matter fields and a scalar-tensor model with a dynamical... [Continue reading]


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Quantum Physics

Origin and meaning of quantum nonlocality. (arXiv:1110.4641v1 [quant-ph])

Quantum nonlocality is revisited from a novel point of view by studying the problem of an originally classical particle immersed in the stochastic zero-point radiation field (zpf). The entire system is left to evolve until it reaches a state in which the radiative terms cancel each other in the mean... [Continue reading]


Spectra of Harmonium in a magnetic field using an initial value representation of the semiclassical propagator. (arXiv:1110.2900v1 [quant-ph])

For two Coulombically interacting electrons in a quantum dot with harmonic confinement and a constant magnetic field, we show that time-dependent semiclassical calculations using the Herman-Kluk initial value representation of the propagator lead to eigenvalues of the same accuracy as WKB calculations with... [Continue reading]


Effective and exact holographies from symmetries and dualities. (arXiv:1110.2179v1 [cond-mat.stat-mech])

The theoretical basis of the phenomenon of effective and exact dimensional reduction, or holographic correspondence, is investigated in a wide variety of physical systems. We first derive general inequalities linking quantum systems of different spatial (or spatio-temporal) dimensionality, thus establishing bounds... [Continue reading]


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High-Energy Physics

Shear modulus of the hadron-quark mixed phase. (arXiv:1110.4650v1 [astro-ph.SR])

Robust arguments predict that a hadron-quark mixed phase may exist in the cores of some “neutron” stars. Such a phase forms a crystalline lattice with a shear modulus higher than that of the crust due to the high density and charge separation, even allowing for the effects of charge screening.... [Continue reading]


Quantum Mechanics, Spacetime Locality, and Gravity. (arXiv:1110.4630v1 [hep-th])

Quantum mechanics introduces the concept of probability at the fundamental level, yielding the measurement problem. On the other hand, recent progress in cosmology has led to the “multiverse” picture, in which our observed universe is only one of the many, bringing an apparent arbitrariness... [Continue reading]


Dark Matter after BESS-Polar II. (arXiv:1110.4376v1 [hep-ph])

The BESS-Polar collaboration has recently performed a precise measurement of the local antiproton flux which is consistent with a pure secondary production of antiprotons. We constrain a possible primary component originating from dark matter pair-annihilations. We derive limits on the annihilation cross... [Continue reading]


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Condensed Matter Physics

Luttinger Liquid Physics and Spin-Flip Scattering on Helical Edges. (arXiv:1110.3322v1 [cond-mat.str-el])

We investigate electronic correlation effects on edge states of quantum spin Hall insulators within the Kane-Mele-Hubbard model by means of quantum Monte Carlo simulations. In accordance with Luttinger liquid theory, we find dominant transverse spin fluctuations with an interaction dependent power law... [Continue reading]


FPEOS: A First-Principles Equation of State Table of Deuterium for Inertial Confinement Fusion Applications. (arXiv:1110.0001v1 [cond-mat.mtrl-sci])

Understanding and designing inertial confinement fusion (ICF) implosions through radiation-hydrodynamics simulations rely on the accurate knowledge of the equation of state (EOS) of the deuterium and tritium fuels. To minimize the drive energy for ignition, the imploding shell of DT fuel must be kept... [Continue reading]


Detecting Berry curvature in the dynamical Hall effect. (arXiv:1109.6024v1 [cond-mat.stat-mech])

Geometric phases in quantum mechanics play an extraordinary role in broadening our understanding of fundamental significance of geometry in nature. One of the best known examples is the Berry phase \cite{berry_84}, which naturally emerges in quantum adiabatic evolution. So far the applicability and measurements... [Continue reading]


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General Physics

Bubble oscillations and motion under vibration. (arXiv:1110.2777v1 [physics.flu-dyn])

Bubbles under vibration can behave in unusual ways, e.g., moving downward against the force of buoyancy. While the bubble downward motion due to the Bjerknes force is well known at acoustic frequencies close to the bubble resonant frequency, these experiments demonstrate that these effects can be observed... [Continue reading]


Resonant multi-photon IR dissociation spectroscopy of a trapped and sympathetically cooled biomolecular ion species. (arXiv:1110.2774v1 [physics.chem-ph])

In this work we demonstrate vibrational spectroscopy of polyatomic ions that are trapped and sympathetically cooled by laser-cooled atomic ions. We use the protonated dipeptide tryptophane-alanine (HTyrAla+) as a model system, cooled by Barium ions to less than 800mK secular temperature. The spectroscopy... [Continue reading]


An effect of abrupt current disruption. (arXiv:1110.0483v1 [physics.plasm-ph])

Every engine, let it internal combustion engine in car or turbine of airplane, needs a high quality fuel igniter. During last decades there have been some minor changes made in ignition systems, like invention of Capacitive Discharge Ignition, Multiple Discharge Ignition, Ignition with Direct Current Discharge,... [Continue reading]


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