A Time Traveler

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Deep into your thoughts,
Into the beautiful symphony of the millivolts,
Into the ethereal domain.
Whatever it is,
Whatever mystery or myth.
Not driven by motive but desire.
A desire from your free will.
Perhaps your brainchild.
No motivation.
Not needed.
For a time traveler about to hit the clock.
Good morning. Already.

Image copyright of www.hikingartist.com

Overwhelming affair

Perplexed I am. Constantly. Eternally.
Absurd obsessions profoundly grounded.
Mystic is this star dancing around. Mystic is this world.
Only if you look closely, you’ll see.
Take my eyes, take my mind.
Comprehensible enigma toys me throughout,
Incessant thoughts turn into crazy dreams,
Seeking unobvious answers;
Willing to solve the missing elusiveness;
Willing to elucidate the prevalent ignorance,
Blinded by orthodoxy, blinded by lack of imagination.
Futile venture you may call,
Trivial you may call.
Trivial I am.

The 4 fundamental forces of physics

The four fundamental forceUntil the 19th century, it was believed that the two force: gravitational force and electromagnetic force, could explain all physical mechanism. The Gravitational force acts between two bodies with mass, and is given by Newton’s famous equation: F = k*G1*G2/D^2. Simply, it is the force that keeps two things together, keeps us to the ground, and also explains the movement and positions of stars and planets. However, the gravitation force was incapable to explain the binding of electron to the atom. The mass of atom is negligible, while electrons are fairly massless, therefore the force of gravity is almost zero between them. In order to explain this behavior, and also to explain the relation between all charged particles, scientists use the principles of Electromagnetism. As the name suggest, electromagnetism comprises of: Electrostatic and Magnetic force. The reason why charge flow from higher potential to lower potential, why a balloon clings to the woolen sweater, occurring of thunder and lightening and such phenomena can be explained by the laws of electrostatics. The law of magnetics describe how two magnets attract or repel each other depending on their polarity. The fundamental mechanism behind such attraction, however, has not been explained. The theoretical possibility of magnetic monopole, in fact, magnetism in overall, has been baffling scientists for over two centuries.

An English scientist by the name of Michael Faraday was the first person to understand the interrelation between electrostatics and magnetics and to come up with a basic definition of electromagnetism. Faraday experimented with a magnetic bar and a conductor wire, and noticed a change in current in his device whenever he moved the magnet away from the wire.  Accounting on his experiment, Faraday postulated three basic laws on electromagnetism. Here’s a very short and well-explained video on electromagnetism: https://www.youtube.com/watch?feature=player_detailpage&v=cy6kba3A8vY#t=75s The orientation of the induced current, the point charge model, notion of electric and magnetic flux, diffusion current etc. was however still unclear. In 1865, James C. Maxwell unified all electromagnetic principles and published his ground breaking equations in his famous paper, “A Dynamical Theory Of The Electromagnetic Field”. From propagation of electromagnetic wave such as light, RF, microwave etc to the binding of electrons to the atom, and simply, the working of my laptop that uses electricity generated by rotating turbines filled with copper fans – Maxwell equations can explain everything related to electromagnetics.

According to Electromagnetism, like charges repel while unlike charges attract. This, however, contradicted with the structure of atom, as in atoms positively charged protons stay together inside the nucleus. To explain this phenomena, scientists discovered a force called the Strong force that kept the proton and neutron in the nucleus from busting apart. As the name suggests, the Strong force is so strong, it undermines the electrostatic force between the protons and holds them inside the nucleus. The Strong force is extremely complicated, and one must have the knowledge of fundamental particles such as hadrons, quarks, gluons etc to understand the process. Briefly explaining, Proton and Neutrons are called Hadrons and are composed of 3 Quarks. Proton is composed of 2 Up quarks (+ve) and 1 Down quark (-ve), while neutron is composed of 2 Down and 1 Up quark. Gluons are Strong-Force charge carriers that interact with the quarks and makes them change their Color. Gluons are extremely powerful particles, that prevent the quarks from straying away, thereby stabilizing the nucleus.

The Weak force, as the name implies, is the weakest of all fundamental forces and acts over a very tiny range. The weak force explains why some atoms undergo radioactive decay, the process that fuels every star in the universe, and indeed keeps the sun shining. Just like the strong force that changes the color of the quark, weak force changes the Flavor of the quark, by the impact of force carriers. The force carriers in weak force are called Bosons that interact with the quarks. Briefly explaining, Bosons are of two types – W boson that is either +ve or -ve, or Z boson that is electrically neutral. When a -ve W boson comes in contact with a Proton (you know what quarks Protons are made up of right? If not, see paragraph above), the proton changes to a neutron, as the -ve W boson changes the quark flavor of the proton from 2 Up and 1 Down to 1 Up and 2 Down quark. With change in the number of protons and neutrons, the atom as a whole changes i.e. decays to a more stable form.

I hope you understand the 4 fundamental forces of physics now, if not, at least the top two. Keep loving physics. It makes the world go round.

How to verify your WordPress blog in Google, Yahoo and Bing

Before you start reading, I would like to assure you that I, myself, have successfully verified my blog using this method. Recently, going through some settings I eventually, fair to say, offhandedly, figured the way to verify my blog. I had been searching for a viable solution for over a month, but unavailing and bogus results left me frustrated, and no where. All the process discussed in the web are based on HTML verification method i.e. copying a code or uploading a file to !?!?? God knows where! Nothing but deceit, leading to an inevitable fiasco for all gullible people like me. You don’t need to edit any index.php file or HTML code or such.

Verifying your WordPress blog not only validates your site, but also offers enhanced web visibility as search engines like Google, Yahoo and Bing thence accredit your site. Consequently, the content it presents is assumed to be valid and relevant, compared to unverified sites. Furthermore, any changes you make to your site will now be constantly monitored by the search engines and the changes will be updated to their database in a more timely basis.

Relax and follow these steps.

  1. Go to http://www.google.com/webmasters/ and sign in to webmaster tools with your gmail account.
  2. Click on ADD A SITE button on the right and add your wordpress blog site. For instance:  yourdomain.wordpress.com
  3. A screen with the verification option appears, as below. Click on Alternate Methods
  4.  There are basically 3 alternate methods to choose, I’d suggest the first option “Add a meta tag to your site’s home page“.
  5. Click on the radio button and copy the code that shall appear shortly.
  6. Almost done. Go to your WordPress blog site administrative panel and then click on Tools.
  7. Paste the copied meta tag data into the Google Webmaster Tools field and then hit the Save Changes button.
     
  8. Now go to back to Webmaster Tools page and click the Verify button. An image as below should appear:

You’ve now successfully verified your Word Press powered blog site. Cheers!

P.S. You can similarly verify your site for Yahoo and Bing by copying the meta tag from them and then respectively putting it into Yahoo! Site Explorer and Bing Webmaster Center field (see image 7)

A trip to “The Gateway of Everest”

What would you like for a rainy day: a cup of tea or a coffee, or a glass of rum, or, or a comfortable chair to recline and watch it pour? Well, I and my friends, had something different in mind. Staring through my window, the dark morning of June 28th 2011 looked frightening. And with the continuous rainfall the preceding night it was utterly frustrating for someone who had planned a road trip to the countryside on motorbike. But we were not going to get dispirited by the fleeting clouds trying to get extreme. All of a sudden, the rain receded, yielding to our ardor. We revised the meeting time and place, and once we all hit the rendezvous, the sound of engine was bound to roar. One hell of a ride began…

——————————————————–The Valley Exit———————————————————-

Riding through the wide and newly built highway from Koteswor to Surya Binayak was every riders delight. With the funky beat of “All of my love” hitting my ear, the excitement doubled. The clearing sky and the tickling mist and chill added up to the excitement. I only felt two things at that moment – the roads and the doors. Here it comes from the mixtape, oh I love this!! Jimmie sing it loud, riders on the storm….. yes indeed. Get funky…

——————————————————-The Lunch Stop———————————————————-

It was 11:30 am by the time we reached Dolalghat – a place by the river known for its delicious fish meal items. Finished our lunch, filled the fuel tank, and yes, took off our raincoats smiling at the sky. Having been here so many years, I do not feel Dolalghat will ever change – the same laidback place and the same relaxed and friendly people. One can go boating or swimming in the river or fishing, which is free. But no, realizing we hadn’t reached even the half way, we packed our bags, switched driver and left the ‘Dolalghat fun’ for next time. Also, we knew the road won’t be as smooth, plain and wide as until now once we reach Khadi Chaur – tentatively the half way in terms of distance. Well in terms of difficulty, we had only completed 10% of the journey. Time to move ahead…

————————————————–Riding through the Mist——————————————————

You cannot be more helpless than while having to witness your motorbike move at the speed of a turtle! Mine was clearly not built for such steep, off-road ride. We stopped our bike periodically to cool down the engine. The grueling engine poured its pain through the exhaust pipe that quickly transformed it to smokes. To add to our misery, the clouds planned to accumulate and chuck intermittent rain at us throughout the remaining journey. The green forest and the natural, beautiful views kept us invigorated, while the fog floating about and covering everything, and in seconds disappearing like sorcery, kept our adrenaline in check.

—————————————————-The Final Showdown—————————————————-

We were completely exhausted by the time (6:15 pm) we reached Charikot – the last place to stop for food and fuel until the next 20 kilometers. If it had not been for the scenic trees, rivers and waterfalls, a pristine beauty untouched by modernization, we would have blamed the rain and lodged at Charikot for that night. We took a brief respite, drank tea and ate at the small local bazaar of Charikot. Escaping through the after-dusk darkness, we left Charikot. The destination mark increased from 15 kilometers to 17 kilometers as we rode. Interesting! We feared if we had been riding the opposite direction. After seeing a person at the no-man-land we asked for his help. He looked bit disoriented to see so many people on motorbike. He casually said we were close, but could not estimate the time it takes a motorbike to reach there. Investing on our little-left energy, we rode through the dark alley looking at the mountain silhouette. Finally there we saw through the peeps, a beautiful valley shining amid the absolute darkness. Jiri here we come…..

The origin of the term “BUG” in computers.

Let me take you back to February, 1944 when Howard Aiken just invented the first digital machine, given the nomenclature of “The IBM Automatic Sequence Controlled Calculator (ASCC)” but universally known as “The Mark I“. After coming home from a hard days’ work Aiken saw a bug creeping in his meal and was quite frightened by its structure so he decided to name all the computer problems as bugs! CRAZY? Well, i think alike. Okay, jokes apart folks.

————————————————————-THE BACKDROP——————————————————————–

Many consider that the commencement of today’s modern computers is the courtesy of Aiken’s intelligence. However let not he be merely accredited for the glory. The team comprised of computing pioneers that included: Clair Lake, Frank Hamilton and Thomas J. Watson with programming virtuosos Richard Milton Block, Robert Campbell, and Grace Hopper.

The Mark I read its instructions from a 24 channel punched paper tape and executed the current instruction and then read in the next one. It had no conditional branch instruction. This meant that complex programs had to be physically long. A loop was accomplished by joining the end of the paper tape containing the program back to the beginning of the tape (literally creating a loop). This required much physical effort and caused many hardware failures.

—————————————————————–THE BODY———————————————————————-

The machine once failed to operate and caused agitation among everyone as no one could diagnose the problem with the computing giant. Two days passed by without anyone knowing the cause of the problem. On the third day, Grace Hopper finally figured out that a moth had landed on a hardware and shorted out the switchboard. Upon removing the moth the computer revived and functioned normally again. From that point on any computer problem is regarded as a BUG.

Conclusion:

Grace Hopper coined the term ‘bug’ for a computer fault. Hopper was the first person to ‘debug’ a computer 🙂