EXCEPTION PROVES THE RULE

Majority may follow the rule. There may be a few exceptions. Exceptions does not disprove the rule. But prove it strongly.

1. All living beings follow a life cycle. They born, grow, multiply, live and die. But virus never dies. It always spring back to life in watery environment.
2. Normally insects eat plants. We use pesticide to kill them. But there are plants which capture and eat insects.
3. All shapes have two sides. That is, inner and outer surface.
Take a ribbon of paper. Give it to a half twist. Paste the ends together. It is mobious strip and it has only one side.
4. Normally we deal with whole numbers in our daily life. 50000 rupees of salary, cost of 320 dollars, height of 172 cm.
But nature does not deal with such sharp numbers. The mathematical constants pi = 3.14.. and e= 2.71.. are irrational numbers. That is, they are never ending numbers.
5. Basic physical quantities mass, length and time always remains constant as for as our experience goes.
But Einstein's theory of relativity says: when things moves at the speed of light, the basic quantities begins to change.
6. We experience 12 hours day and night cycle. But at the poles of the earth, it is 6 month duration due to tilting of the earth.
7. By mixing the three primary colours red, green, blue in different proportions, we can produce all the millions of colours including white. But black is not a colour. It is simply absence of light.
8. All the mathematical operations have reverse operations.
example: 4^2 = 16
root of 16 = 4
But modular arithmetic is the one way operation.
14 MOD 6 = 2
Divide the 14 by 6 and get the reminder. Hence it is used in cryptography.
9. All liquids {like oils} are quickly heated up. But water requires lot of heat to get heated up. That is why, well water remains cold even in summer.
10. We know the properties of metals. But we also know mercury is a metal and it is an exception. So do not put off by exceptions. Rules will always prevail.

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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 oxygen constitute 20% of the atmosphere. The oxygen level is always mai

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. Inverted parabola shape is used in the construction of buildings and bridges. Because the shape is able to bear more weight. A plane

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 temperature to low temperature and not the other way. The air molecules in y

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