UPGRADE YOUR BODY

BRAIN :
When you 'think' there is electrical activity in the brain. It can be taken out using electrodes,amplified and can be used to control a robotic arm. So doing things at the speed of thought is possible.

SPINAL CORD:
Even today, people are getting artificial replacements of spinal cord. It will be improved further. It may aid paralytic patients to walk again in future.
LUNGS:
"Extra corporal membrane oxygenation" ECMO, a artificial lung which can be carried in a backpack is already available. It functions like real lung and stays outside the body.

KIDNEYS:
We know, dialysis machines does the work of kidneys from outside the body. Also kidney transplant are taking place- but the wait is long. Research to make artificial kidney is in progress.

GENES:
Creating genetically modified human being is possible. But it has so many ethical issues. 'Cloning' is the starting points in this direction. We do not know what the future holds. Man may play God?

EYES:
We have spectacles, google glasses and reality devices. Smart contact lens is on the way. It can record images at the blink of the eye. It can produce smart overlays which can help in shopping and driving in low visibility.

EARS:
Modern hearing aid is very sleek and invisible. The cochlear implants bypass the damaged ear parts and electronically simulates the hearing nerve and make hearing possible.

HEART:
Researches to make artificial hearts are underway around the world. If one is produced successfully, it will be the monumental achievement in medical technology.

LIVER:
We now have artificial liver which can work from outside the body. It just only supports some functions of the liver. We have not yet fully understand the working of the liver. Hence we are not able to make a suitable substitute for it. But with progress of time, anything may be possible-like moon landing.

SKELETON:
Without replacing the bones within the body, one can use exo- skeleton which may help paralyzed persons and elderly people. One can enhance its functions using powered exo-skeleton.
Tomorrow, many of our body parts can be replaced by machines, enhancing our life and improving our longevity. But ethics, morality, humanitarian values should not be replaced.
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LISSAJOUS FIGURES

Definition: "When a particle is subjected to two sine wave motion or two oscillatory motion at right angles, the particle describes lissajous figures". We know sine wave motion and circular motion is basically same. Hence we draw two circles A and B perpendicular to each other. The circle B rotates twice faster than circle A. That is, frequency of circle B is two times than that of A. A particle at the intersection of two circles is subjected to two sine wave motion A and B at 90 degree simultaneously. The particle will describe figures depending on the frequency and phase of A and B . In our case, the ratio of frequency is 1:2 and the two waves are in phase. To draw lissajous figures : A moving point in both the circles are chosen. Here we should remember; during the time taken by the circle A to complete one rotation, circle B completes two. Hence the points are marked on the circles according to their speed. Then straight lines

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

CASINO'S GAME

Let us find out how the casino survives with mathematics. Say, your friend invite you for a game of dice. You must bet (wager) 2 dollars. If you roll 'six' you will get back 8 dollars. The game will go on for 30 rounds. All sounds good. The probability of rolling 'six' is 1/6. Since the game will be played for 30 times, the 'expected win' is 30*1/6 = 5. That is, you are expected to win 5 rounds out of 30. Hence your gain will be 5 * 8 =40 dollars. ok. This also implies that you will loose 25 rounds. Hence your loss will be 25*2 =50 dollars. Your net gain will be gain-less = 40-50 = -10 dollars. For 30 rounds, the loss is -10 dollars, Hence, for one round =-10/30 = -1/3 dollars. There will be a loss of -1/3 or 0.33 dollars per round. It is not a fair game. Let us make a simple formula to calculate 'Pay out per round\. The probability for a win = p The pay-out in case of win = V No. of rounds = n The expect

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