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science

The Maxwell’s Equations, from nature to instruments.

The beauty of Maxwell’s equations can be seen in how it helps us understand nature as well as instruments, at the same time. Medical devices are simply an advanced understanding that began with understanding electromagnetic waves through Maxwell’s equations.

Each of the following 4 equations has a different name, by which we call’em, but together they are called as the Maxwell’s equations. Together they constitute what I am inspired to say; the golden equations of Physics. If we do some easy tricks they will be converted into whats called as the Wave Equations (of motion) ! Yes, they describe the wave behavior “fully”.

— By that I don’t mean sound waves, but any sort of waves that move at the speed of light. Sound waves are ordinary pressure oscillations, that travel much slower than even rockets.
The 4 equations therefore describe how electromagnetic waves are created and broadcast. Hence TV radio and satellite communication were understood because these 4 equations were understood.

First two are time-independent or static equations.

The first equation is known as Gauss’s law of electrostatics and says “Electric fields (E), are a result of sources of electrostatic charge”.

The 2nd equation is analogous and called as Gauss’s law of static magnetic field. But it says “apparently there are no sources of magneto-static charge or single magnetic pole from which the magnetic field B is created”.

Then how are magnetic fields created? We needed to know further to find the answer. Lets look at the 3rd and 4th equations.

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This year’s Nobel prize in Chemistry.

What happens when some UV falls on biological molecules? (or any kind) some of these molecules like the wooden pole absorb the energy and there still remains energy which they can emit as visible light. So the UV light kicks the molecules and the molecules in turn emit visible light. This implies that the UV wavelength that the molecules absorbed energy at are very small compared to the wavelength at which they emit visible light. This is always the case.

When we say some materials are fluorescent it means they absorbed higher energy and emitted lower energy radiations of colorful light.

But this has a great deal of application apart from its theoretical interest.

Oshos’s science

Wednesday, October 6, 2010 at 6:47 pm UTC + 05:30 OHSO, A Modern Mystic – “My message is not a doctrine, not a philosophy. My message is a certain alchemy, a science of transformation.” of-course your messages are a science… Read More ›

Whats Light. A small primer.

A small primer on optical attributes of Light.

Manmohan Dash,

( — largely edited, 18-19 January 2014, originally from; Wednesday, March 27, 2013 at 3:58 pm UTC + 05:30 )

Updated Discourse.

If you ever seem, to be caught up between: they say light always moves at the same speed-c, they keep on harping, why then, its energy so different; we have light of various energy and frequencies. One that are harmful, like x-ray or ultraviolet and one that are quite soft on us all. The answer is there are two kinds of speed, when it comes to vector emissions like light, one speed is on the plane of polarization, giving us the energy or frequency or intensity of light waves, and the other, the speed perpendicular to that plane, that is; the speed at which energy of light is transmitted across the galaxy, its this latter speed, which is slated to be known as speed-of-light (instead of, speed of light’s energy transmission vs speed that determines the energy value of light transmission) and always a constant known as c, whose value is unchanged, as long as a single quantum of light is considered and in vacuum.

Note that vector emission means there are 3 dimensions, in which this wave is created or propagated, light wave, its a plane + a perpendicular dimension to that plane. The plane is called plane of polarization which always contains two fields, Electric and Magnetic field, and the perpendicular dimension is the direction in which the energy of the light wave is propagated, therefore, gives the light-wave-speed; which are again of two definition, the physical or actual speed known as group velocity, and the virtual, conceptual speed of each wave train, known as phase velocity. This definition of phase and group velocity are always to occur; for any kind of waves and not just light wave. So, the light-wave-group-velocity (for a single quantum-of-light, called photon) is always c = 2.99 x 10 (8) meters/second, in vacuum.

Charity and Funding.

myth: science needs massive funding, religion is a charity. fact: science needs reasonable funding, with 100 $ you will do education that can’t be done with 10000 $ of preaching.  fact: religious charity is equivalent to keeping the mass at… Read More ›

Why India can go to Mars and not the atom?

Whats the electron’s electricity bill? Our democracy has made it easier that if every person pays a little particle physics is really not that expensive, even less expensive than Diwali, Diwali comes every year. A lab for example would stay for 3 decades if opened.

I worked for a particle lab whose cms energy for electron’s acceleration was roughly 10.5 GeV. Thats basically the energy if each person in India buys a battery of 1 Volt and gifts it to the lab as each battery would accelerate the electron a level of 1 eV and roughly the population of India would be needed to accelerate the electron to 10.5 GeV, assuming each one’s battery accelerates to 1 eV.

There will be other similar expenditures also, but this is like the electric bill for the electron. Says why particle physics is not really as expensive for the country as are eg riot expenditures or even Diwali crackers.

New 4-quarks at BES-III, China.

Chinese particle accelerator BES II discovered a slew of particles that are 4-quarks. They are centered about a mass of 4 GeV. (a very small fraction of GeV up and down)

(If your battery is 1 Volt then it will accelerate your electron to 1 eV, you need then 1 billion = 10 crore batteries to achieve this sort of energy, may be much more than 40 crore batteries actually)

Some of these 4-quarks are also confirmed by Belle, Tsukuba, Japan (where I worked) and BaBar, California, USA.

India has planned its 1st-ever particle accelerator for a decade now which is already working its Physics and design out but facilities have been stopped by environmentalists and Governmental apathy. (or is it purely political or even cultural apathy?)

If we can go to Mars why can’t we go to the atom?

Status of Mars Orbiter of India !!

A beautiful formula for what angle an object in space extends at you? Its the (diameter-of-object / distance -of-object) ratio is the tangent of that angle. Then, the farther the object is the smaller the angle becomes maintaining the tangent value of the angle in that ratio, because the object will have a fixed size/diameter.

δ = inverse-tan ( diameter / distance )

This formula then I will remember all my life. Give me Einstein Tensor and bet that I will remember you will lose that bet. I hear applauds, Thank you.

This image then shows the size of earth from the distance of the Rocket that has been sent by India recently. This formula and info is from ISRO fb page ( — although explanation is mine) and yes this is valid only for circular objects (earth on a plane is a near-circle, as you can see in the image above) and the circle on this square-image-space extends an angle with a point that is as far from the square as is the Rocket.

Jupiter, Europa, their love game.

But how magnetic a personality is Jupiter? Jupiter’s magnetism is bigger than Sun’s and earth’s. A fact that certainly excites its lovers.

This hubble image shows how plumes of water are sprayed into its own atmosphere by icy Europa which the armor Jupiter splits at the atomic level by throwing electric charges at the water molecules in a rapid manner by its magnetic arm. Just like we accelerate charges by magnetic field here on earth and make them split each other, the power of Jupiter’s darts are so high they split the water molecules into ions of H and O. That causes radiation in various hues of color, an aura captured by the Hubble telescope.

Why Harvard does not promote education.

Its when we teach that we ourselves realize how effective our research quality is. As is said by the giants usually Einstein and Feynman “If you can’t explain it in simple terms perhaps you don’t understand”. So basically how can we be sure that the research Harvard is doing is applicable to validity or even a contribution towards intellectual assimilation by humanity? (Of-course Sean makes very clear all along that thats not the mandate of Harvard and its news to me that it isn’t.)

Only Industry, Funding Agency and Nobel Prize Committee will estimate the worth of the organization and its work. Isn’t that a death-nail to science? Because science is Research+Education not just research. I have done pain staking research in my life in last 12 years at-least for 10 years. But they will never be known, especially my particle physics research, if I will NOT be able to explain them or teach them, if some of them turn out to be interesting for any field. Of-course I am not Harvard and an individual. But this is the kind of difference between organizations and individuals, the organizations constitute of individuals but work in a fashion that respects only a specifically chosen policy, thats not questionable, whats questionable is why it will appeal the masses? Just because money flows from one end to another where no-one has a say?

Society suffere…

Society suffered a lot of faith issues. What evolved is trust. Then society suffered a lot of trust issues, what evolved is confidence. Then society suffered a lot through confidence. What evolved is Measurement Theory. Our societies have always seen… Read More ›

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