With video, you decide what to watch, you can use your television set to provide you with the films, shows, music-virtually any visual entertainment or information-of your choice. There are two systems: videotape recorders and videodisc players, each with their own particular advantages. Videotape and videocassette recorders play tapes and you can record television programmes on them as well as …

In the evening, the setting sun appears like a beautiful crimson red ball. But we all know it has not changed its color. Sunlight contains all colors. But the atmosphere on, around and over the earth contains molecules of water, vapour, dust, air and other impurities. The sunlight which passes through these media gets scattered. Our atmosphere scatters blue, violet …

These are both laboratories that fly in space. Skylab was an American space station that contained much scientific equipment. It was used in 1973 and 1974. Spacelab is the name of a series of space laboratories taken into space by the space shuttle. Astronauts aboard the shuttle use them to do scientific experiments in space.

The insect called the praying mantis may look as though it is praying, but it is very fierce! It gets its name from the way it holds its forelegs in front, of its head. But in fact it is just waiting for an insect to come along and, as soon as it is within reach, the two parts of each …

Eyebrows keep the perspiration from our forehead from running down into our eyes. The perspiration that forms when we get hot is trapped by the eyebrows and turned aside, and the moisture runs down our temples on the sides of our face, otherwise it would blur our vision and make us feel uncomfortable.

A metallic bond is characterized by free electrons and generally forms a specific geometric pattern of compact arrangement of atoms. All metals (except mercury) thus exist in a solid state at room temperature and have a specific crystal structure. Mercury belongs to the zinc group of elements in the periodic table, which comprises zinc, cadmium and mercury. They all have …

Although some Ancient Roman writers made reference to eyeglasses of beryl gemstone worn by the Emperor Nero, the earliest framed lenses to correct defects in vision were made in China in the 10th century. They did not appear in Europe until the later 13th century and are first recorded in Britain in 1326. These early spectacles were held in the …

The first recorded sighting of Nessie was in the year 565, when St Columba has a confrontation with the monster and ordered it not to harm people. It never has, although many people have been startled, if not frightened, by its sudden appearances. Photographs have been taken of what people say is Nessie, and although scientists have tried to claim …

The Solar Impulse 2, claimed to be the world’s only solar-powered aircraft, took off from Oman on Tuesday to head towards Ahmedabad, launching the second leg of its epic bid to become the first such plane to fly around the world. The aircraft took off from Muscat earlier this morning and is expected to land in Ahmedabad after flying nearly …

I don’t think there are any magic love potions that you can use to make someone fall in love, but chemistry does play an important role in how a relationship progresses. First, there’s attraction. Nonverbal communication plays a big part in initial attraction and some of this communication may involve pheromones, a form of chemical communication. Did you know that …