Why Are Some People Left Handers?

Why Are Some People Left  Handed? Interesting Facts About Left Handers                                        According to one estimate,10% of population are left handed. According to yet another estimate, two out of three lefties are males. 84% of left...

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Why Does Venus Rotate Backwards?

Cause For The Abnormal Reverse Rotation Of Venus Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. The planet is named after the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky, reaching an apparent magnitude of −4.6, bright enough to cast shadows. Because Venus is an inferior planet from Earth, it never appears to venture far from the Sun: its elongation reaches...

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How Does A Mongoose Defeat The Snake?

Is The Mongoose Really Immune To Snake Venom? Every time you talk about mongoose, you talk about snakes also. In ancient Indian medical books, mongoose is called "Sarpa-vaidhya" ( Snake Doctor). In ancient Egypt mongoose was worshiped. Aristotle noted that mongooses acquired an artificial armor by rolling in water and dirt or mud and drying their coat before attacking a snake. In India a popular belief prevailing is that mongooses use a herb...

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Why do we sleep?

Why do we spend quarter of a day sleeping?                                       Sleep is a naturally recurring state characterized by reduced or absent consciousness, relatively suspended sensory activity, and inactivity of nearly all voluntary muscles. It is distinguished...

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Why acids cause burns on skin?

Why Burns Occur When Acids Falls On Our Skin? An acid is a substance which reacts with a base. The word acid is derived from Latin Acidus meaning sour.  Commonly, acids can be identified as tasting sour, reacting with metals such as calcium, and bases like sodium carbonate. Aqueous acids have a pH under 7, with acidity increasing the lower the pH. Chemicals or substances having the property of an acid are said to be acidic. Strong acids...

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Why helicopters have a tail rotor?

Why Does A Helicopter Have A Second Rotor On Its Tail?  We all know or seen helicopters. Such a marvel of human engineering. It is also called as a chopper, helo or whirlybird.It is a type of rotorcraft in which lift and thrust are supplied by rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forwards, backwards, and laterally. These attributes allow helicopters to be used in congested or...

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