JUST A MATTER OF TIME

For want of shoe nail, shoe is lost.
For want of shoe, the horse is lost.
For want of horse , the messenger is lost.
For want of messenger, the message is lost.
For want of message, the war is lost.

Because of one small piece of nail, war is lost. The communication was so difficult in those days. The communication progressed from messenger, pigeon, telegram, telephone, radio, mobile phone, smart phone, through time. So the time has solved and revolutionized the communication.

Similarly, we have progressed from oil lamps, to led lamps via candles, petromax, incandescent bulbs, fluorescent lamp, CFL etc,.

In transport; Horses, horse driven carriages, bicycles, automobiles, trains, bullet trains, air planes, jets, supersonic planes, luxury ships, spaceships and so on.
In future: hyper loop, a hybrid of train and airplane; magnetically levitated train etc, will come into being.

When one asks;
1. Will human ever eradicate cancer and Aids?
2. Can we live up to 100?
3. When will we colonize mars?
4. Can we reach moon in matter of hours?
5. Could we teleport ourselves?
6. Can we sneak into our past and future?
7. Can we read the mind of others?

Everything may be possible, but all is just a matter of time. Human brain is capable of making miracles, if proper time is given.

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THE EARTH, A SUPER ORGANISM

JOIN MY COURSE: "Become a programmer in a day with python" A man called 'love lock' (what a name) proposed a theory called Gaia theory, named after Greek Goddess. It says, "Earth is a self-regulating organism like a human being. The organic life in it interacts with in-organic matter and maintains atmosphere, temperature and environment". Hence the earth is still suitable for the life to thrive. Imagine, in a particular place, there are lot of flowers. Some flowers are white and some are darkly coloured. We know, white reflects light and heat while dark absorbs the same. White flowers can thrive in hot climate. But dark flowers requires cold climate. The absorption and reflection balances and the environment reaches average, warm temperature at which both the flowers can co-exist. This is the essence of "Gaia" theory. On our earth, ...

THE PARABOLA

A jet of water shooting from a hose pipe will follow a parabolic path. What is the so special about parabola. Y= x^2 Draw a graph for the above equation. It will result in a parabola. This parabola is also called unit parabola. Any equation involving square will yield a parabola. Example: Y = 2x^2 +3x+3 (also called quadratic equation) X= 2 and -2, both satisfies the equation 4 = X^2. Parabolic equations always have two solutions. Any motion taking place freely under gravity follows parabolic path. Examples: An object dropped from a moving train, A bomb dropped from flying plane, A ball kicked upwards. If a beam of light rays fall on the parabolic shaped mirror, they will be reflected and brought to focus on a point. This fact is made use of in Dish Antenna, Telescope mirrors, etc. ...

DISORDER IS THE "ORDER OF THE DAY"

Imagine a balloon full of air. The air molecules are moving randomly inside the balloon. Let us pierce the balloon with a pin. The air rushes out. Why should not the air molecules stay inside the balloon safely and ignore the little hole? That is not the way the world works. The molecules always "want to occupy as many states as possible". Hence the air goes out in the open to occupy more volume. The things always goes into disorder (entropy) and the disorder increases with time. The above statement is what we call "second law of thermodynamics". Consider a cup of coffee on the table. Suppose the heat from entire room flows to your cup of coffee, the coffee will boil and the rest of the room will freeze. Freezing means bringing things to order and arrangement. It violates the second law. Hence it will never happen. Hence heat must flow from high ...

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