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Why do we cup our hands around our mouth to call someone far away?

When you speak or shout or sing or even whisper, the vibrations of your voice send sound waves through the air. These sound waves travel from your mouth in all directions out straight, to the right to the left and to all the places in between. But when you cup your hands around your mouth, you are pointing the sound …

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Why do we blink when a hammer strikes metal?

Blinking, apart from cleaning and lubricating the soft tissues of eyes, also serves as a protective way of keeping things away from entering the eyes, by lowering the eyelids and lashes for protection. Blinking is a reflex action and happens automatically, as soon as the brain perceives a threat. The striking of hammer is taken as a threat by the …

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Why do the Nilgiris appear blue from a distance?

Not only the Nilgiris, but almost all mountains appear blue from a distance. This is due to a phenomenon known as the Rayleigh Scattering Effect. The light from the sun, due to which we see the mountains, is scattered by atmospheric molecules. The electric field of the incident sunlight oscillates the electrons in these molecules which, in turn, radiate light. …

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Why do some trees lose their leaves in winter?

Some trees with broad-bladed leaves lose their leaves in the winter because the trees has a rest period during the cold weather, and the leaves are not needed for the production of food. These trees are called deciduous trees-from the Latin decidere which means to fall. They drop their leaves in temperate or cold climates, but remain evergreen in the …

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Norman Mailer

Norman Mailer — Norman Kingsley Mailer (January 31, 1923 – November 10, 2007) was an American novelist, journalist, essayist, playwright, filmmaker, actor and political activist. His first novel was The Naked and the Dead, published in 1948. His best work was widely considered to be The Executioner’s Song, which was published in 1979, and for which he won one of …

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