He stayed there for 4 odd seconds.
That cop in the middle of the busy road staring at me.
Then put his head down and crossed the street.
What must have gone through his mind; I raced through.
Can’t give me a ticket for honking at him.
He stayed there for 4 odd seconds.
Special theory of relativity is an extension of Galilean relativity. In simple, Galilean relativity states that if you are in an object that is moving at a constant speed, you won’t be able to tell whether you’re at rest or motion. For instance, we don’t feel any motion sitting in a planet that is rotating around the sun at a speed of 30km/sec. Einstein special theory of relativity takes the relativity perspective to one step forward by assuming time to vary like speed based on observer. Time is therefore no longer constant in special relativity. Some famous corollaries of this theory include the feasibility of time machine and time travel, a yard stick that would contract and expand depending on its velocity etc. This is the best video explaining ‘Einstein Theory of Relativity’ that I’ve seen in the web. Enjoy the video, it’s worth the time:
PS: Feel free to can leave questions in the comment section.
Do you believe that your actions have already been fixed? In fact whatever you do in future is bound to happen irrespective of your will. For instance you are reading this article because you were destined to read it, and I wrote it because that was my destiny as well. The idea seems quite bizarre, but there’s a majority of physicists that believe it’s true. Since everything is made up of the same elementary particles just with different composition and concentration, the behavior of every matter and the way in which everything occurs must be explicable and defined. Therefore what you do, in fact whatever happens in this world – the atomic bomb, the world war, advent of computers, airplanes etc. has already been scripted 13 billion years ago, right at the time of the big bang.
Well if this happens to be true, things and cases it ensues can get quite complicated. One cannot be blamed (or accredited) for his actions, as he was destined to do it. For instance, a murderer or criminal should not be held responsible for the tragedy and must be exonerated from his crimes if this is true. Now the world can be a real disturbing place to live in. This created a huge contention among scientists of the 19th century. Einstein opined that a person should be no matter held responsible for his/her actions no matter bad or good, and a criminal should be punished accordingly. He said it was necessary to do so in order to maintain stability in the world. Otherwise, the world would run into riots.
This entails an interesting relation between religion and science. Now as religion, indeed every religion, believe in destiny and fate, and god deciding all the events and happenings that take place in this world – science seems to be justifying it. But with scientific reasoning, of course. Well I’m not an advocate of religion trying to impress or urge you to believe in it with my hypothesis. Personally, I won’t reject nor believe in the possibility of existence of god. If you ask me, throw me into the agnostic category.
So was Einstein a genius, or just an extremely lucky man to have been chosen to formulate those equations?
Tags: Particle physics, Physics, Quantum Mechanics, Space, Universe
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.
Tags: Boson, electromagnetism, Four Forces of Science, fundamental forces of physics, gravitational force, james c maxwell, Maxwell law of Electromagnetism, michael faraday, Radioactivity, science, strong force, weak force, What are Hadrons made of?, What is a Hadron?, What is a proton made of?, What is a Quark?
Until the 19th century, it was believed that there was only two force that defined the mechanism behind everything: the gravitational force and the electromagnetic force. The Gravitational force is defined as the force that acts between two bodies with mass, and is defined by Newton’s famous equation: F = k*G1*G2/D^2. It is the force that keeps two things together and explains the movement and positions of heavenly bodies, and most importantly keeps us attached to the ground surface.
The Electromagnetic force is the one that explains almost all phenomena in the world, except gravity. It was discovered by Michael Faraday, and later on revised by James C. Maxwell. The electromagnetic force is comprised of the Electrostatic force and the Magnetic Force. Atoms are electrically neutral, but when two materials are bought in contact, electrons from one body is transferred to other developing an Electrostatic force between them. For instance a balloon clings to our sweater if we rub it. In this process, the sweater (made of wool) is likely to lose electron while the balloon (made of rubber) is likely to accept electron. Magnetic force is similar to electrostatic force. Like in case of charge, opposite pole attract each other while similar pole repel. Electrostatic and Magnetic force are interrelated phenomena that cannot be addressed separately, as changing one of them causes change to the other. Taking both of this inseparable phenomena into account, Faraday postulated his laws of electromagnetism. In simple terms, it said that a change in electric field, develops a magnetic field and vice-versa. Here’s a short video demonstration: https://www.youtube.com/watch?feature=player_detailpage&v=cy6kba3A8vY#t=75s
From propagation of electromagnetic wave such as light, RF, microwave etc to the binding of electrons in the nucleus, and simply, the working of my laptop that I’m currently using to upload this post, which uses electricity generated by rotating that turbine by those water molecules, by causing a change in the magnetic field in that hydroelectric cell – the laws of electromagnetism governs almost everything.
“Einstein regarded Maxwell as the most profound contributor in physics since Newton.”
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. The strong and weak force is fairly complicated to comprehend without knowledge of quantum particles. However, to simplify the matter, I’ll write about the fundamental particles, explaining its characteristic and behavior in detail in my next blog.
Tags: Amazon Kindle Fire, Amazon Kindle Fire vs iPad 2.0, Galaxy S2 Tab vs iPad 2.0, Galaxy S2 Tab vs Kindle Fire, iPad vs Amazon Kindle Fire, iPad vs Kindle Fire, iPad vs Samsung Galaxy, iPad vs Tablet, iPad vs Tablet vs Kindle Fire, Samsung Galaxy S2 tab vs Tablet, Tablet vs Kindle Fire
If one yearns back to the days of ancient computing, the recent development of powerful hand-held devices that boast inclusive working platform might be stupefying. Now as nostalgia sets in, we can only think back to that day when late Steve Jobs, the Apple honcho, first unveiled the groundbreaking development of iPad. With that, the inevitable was imminent – our usual habit of general computing and web browsing went through metamorphosis thereby giving birth to a new dimension to basic computing. Apart from witnessing an intuitive experience on a miniature level, which wasn’t necessarily seen before its time, one thing that shocked everyone was its highly competitive $500 starting price point, much lesser than what was anticipated. Even today, it seems that many companies strive to achieve that price figure– thus, bringing us into the constantly shifting price wars.
Now as I stumble upon these burgeoning tablet developments, I foresee a constant threat imparted upon the laptop and smart phone manufacturers, and most significantly to the titans itself – the expediency of the Apple’s iPad is now in jeopardy. Apparently that’s the key reason for major smart phone and laptop manufacturing companies like Samsung, Motorola, HP, Acer, Toshiba etc to venture into the tablet business. One reason for most of these tabs to groom and transcend iPad and other contemporary devices is the easy working platform offered by the Android OS. Development and deployment of app has become a walk in the park for aspiring mobile app developers – the key reason why android tablets has mushroomed over the past few years.
Now with the Samsung Galaxy tab been able to keep the iPad at bay with its all-in-all features and flexibility, Amazon – the eminent e-commerce portal, has dared to bite the bullet to disrupt the tablet ascendancy. Amazon with a perfect mindset first dropped the Kindle to cater readers who love to read electronic books. The highly sought device with its near-perfect attributes gained the deserved prominence in no time. The features they mention in their site describe it best to make you wonder:
- 30 days battery life with a 3 hours complete charge.
- Perfect screen resolution to avoid glaring so that one can read under a bright sun with no difficulty.
- Millions of free books, music and movies from Amazon store.
- Thousands of popular apps.
- Cloud hosting to all Amazon products. And lots more…
With this huge success, Amazon subsequently released the much hyped Kindle Fire. Many, including me, were enthralled to find out its price and functionality. In addition to an easy-to-swallow $199, the Fire offers comprehensive features and ample of free stuffs – 9 million free books (now that’s fascinating), thousands of free songs, movies and popular apps. Amazon Kindle Fire is here itching to ignite itself into stardom – thanks to its combined functionality of being a Reader first with a superb battery life, display and performance. For an ardent book reader like me, a tablet replacement at such an affordable price with millions of free books and all inclusive features of that of a tablet, the Kindle Fire is definitely the first choice. But for others, will it contest to supersede the titans in the tablet landscape? Or will it merely prove to be nothing more than a laughable tablet wannabe?