When we comb our hair it sometimes happens that we can hear faint crackling. The reason is that combing can create a little electricity. Electrons are taken from the atoms of the comb and are added to other atoms of the hair. It is this passing of the electrons which creates electricity.

A muscle cramp technically occurs when your muscle tightens and shortens causing sudden severe pain. Muscle cramps generally result from overexertion and dehydration. When you don’t have enough fluid in your system, it leads to an electrolyte imbalance that causes your muscles to cramp up. Electrolytes are minerals like sodium, magnesium, calcium and potassium that help cells function normally. An …

Nobody knows exactly why we dream when we sleep. All we know is that everyone dreams, although most dreams aren’t avoid enough for us to remember them when we wake up. Dreams are not messages from other world, or prophecies of what may happen in the future, but very often the result of what we have been thinking about when …

Omar E. Rivera 43, employee of the Port Authority of New York and New Jersey, will never forget the violent and terrifying sound of the Sept. 11, 2001 disaster. He and his yellow Labrador retriever, Salty, escaped unharmed with many of his co-workers from the 71st floor office. He was sitting on his desk when the first of the hijacked …

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 …

How many times do you blink in a minute? Weird, who knows! Well, mostly people blink around 15 times a minute. Blinking is an involuntary action that protects the eye. Most of our eye is enclosed in a bony socket covered with a layer of fat, which forms a protective cover. But when the eyes are open, one-tenth of the …

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 …

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. …

Watching stars on a moonless night can be an quite an interesting experience. As clusters of stars take familiar forms – of a bear, a man in armor wielding a sword, millions of other stars simply twinkle. As if they were playing hide and seek with one’s eyes. Why do stars twinkle? We all know that each star is actually …

Norman Pritchard — Norman Gilbert Pritchard, who is also known as Norman Trevor was an Indian Athlete during the British days, and the first Athlete from the nation to participate at the Olympic Games although it is still an issue of debate whether he participated from India or Great Britain, as is being claimed by some Olympic historians of late. …