All of Physics is this “Inherent ability = difficulty * accomplishment”. Thats just intuitive but can easily be seen to correspond mathematically with the Principle of least action.
First the edifice: whats the problem? The problem is given you move in straight line when every direction is same around you, which direction will you chose? While you are waiting for a good answer from astrologers intelligent people already give a good hint. Think you have some inherent ability which is fixed.
fixed: which changes only if estimated wrong.
That inherent ability is actually action. Accomplishments are adjusted for difficulties, you waded through a swamp 5 meters you would have accomplished in sand 8 meters with that given inherent ability called action. Because action is abstract we have been sticking to time and path-length, but they are not as fundamental, they are merely specifics. More…
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. More…
Based on real incident, perhaps in 2006, published on this website, Feb, 2011.
I hate proselytizers. I miss my bus because of them and I can’t sleep because they knock on my doors .
This really happened.
P: Hi bro
P: You heard Beethoven?
(I am thinking one part of that no is, yes)
P: He played Piano long long ago
(No wonder, I didn’t hear him) More…
Some technologies are designed to fail you, so that you will want more and more of them, and you will be prepared to pay higher prices.
Laptops and girlfriends come to mind.
Lets just discuss the laptops. I originally intended the wrote up as a two line joke, which are not allowed in our civilized world, perhaps because we do not know how to deal with such, so let just go and discuss the laptops. You can replace that with anything of your choice. Lets say blogging is a technology invented to keep us busy and less harping about our day today problems and let capitalism has its sighs of relief.
The prices I have paid for my laptop, if I had saved them, I could have easily purchased a hatchback, in today’s time. Believe it or not. But the same laptops are now available at mere 30000. More…
Per km fare of a typical airfare now a days could be Rs 3. That for an auto Rs 14.
If you were to (only hypothetically: spherical cow) continue to travel via auto for 1500 kms, you would spend far more for the fare this way, than for an airplane, in that proportion, apart from fatigue, time of travel, inconvenience and other contingencies.
But airplanes do look like auto, in some sense, usually 3 main places where wheels are located in an airplane? atleast asis visible right away, in the reverse order of an auto, although technically airplanes could have far more numbers of wheels. More…