Search Results for: Leo

What are quarks and gluons?

For close to three decades, nucleons (protons and neutrons) were considered to be the ultimate subatomic particles. As scientists delved deeper, they detected shadows of yet another layer of matter inside nucleons. Unable so far to crack open a nucleon and bring out one of these shadowy objects for observation and measurement, they named them quarks. It is believed that …

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How is a satellite phone different from a cellular phone?

Satellite and cellular phones are wireless devices. They almost look alike but the way they work is totally different. A cellular phone functions on the basis of cells, and hence are called cell phones. The whole network area is divided into small areas and an antenna is installed in each area. These are also called towers. When a cellular phone …

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How did the invention of the telescope affect cosmology?

An Italian astronomer Galileo Galilei was the first person to work with telescope. In the beginning of 1609, he disclosed the details about the surface of the sun and the moon, Jupiter’s moon and Saturn’s rings, and discovered many stars too faint to be seen with the naked eye. His observations of the solar system led him to support the …

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Do Whales and Dolphins see Blue?

Dolphins and whales live in the deep blue sea, but strangely these animals are not able to see the colour blue! Leo Peichl of the Max Planck Institute for Brain Research in Frankfurt and his colleagues discovered during routine tests that seals do not respond to the blue colour. Intrigued, they carried out similar tests on few other species, such …

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Did the Romans use flags?

The answer, in the modern use of the world flag, is ‘no’. The world is of Germanic origin and was used in the fifteenth and sixteenth centuries to mean a piece of cloth, or other material, displaying the insignia of a community or armed force, an office, or an individual. They were used originally mainly in warfare, and were signs …

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Can you spot the dragon, the unicorn and the giraffe in the sky?

These animals are all represented by star patterns known as constellations. A total of 88 constellations fills the entire sky, and some of them have very odd names. The most famous constellations date back to the ancient Greeks and Romans, but imaginative astronomers have introduced additional ones since then. Among the constellations is a dragon, called Draco, coiled around the …

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Why do plants flower at different times of the year?

The flowers appear at the times most suited to the production of seed for the continuation of the species. Before seed can develop the flower must be pollinated. This means that the dust-like pollem produce by the stamen of the flower must be transferred to the stigma of the ovary. Pollination is brought about by various means. Most plants are …

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What is the name of the priest who is famous for solving mysteries?

It is Father Brown and his exiting adventures were written by Gilbert Keith Chesterton who was born in London, May 29, 1874. Next to Sherlock Holmes, Father Brown is probably the most original and eccentric detective in English fiction. He is timid and absent minded, and in his appearance is short and dumpy, with a round innocent face. He carries …

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When was chicory first used in coffee?

Chicory was first roasted and used in coffee in Holland around 1750. It soon became a popular replacement for coffee. By 1785, James Bowdoin, the governor of Massachusetts, had introduced it to US. In 1806, Napoleon attempted to make France completely self-sufficient by using as a substitute. While this did not last long, the French continued to use chicory to …

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