The world is undoubtedly warming. Global warming refers to an average increase in the Earth’s temperature, which in turn causes changes in climate. A warmer Earth may lead to changes in rainfall patterns, a rise in sea level, and a wide range of impacts on plants, wildlife, and humans.
The gel contains a surfactant to enhance cleaning. On brushing the gel comes in contact with water and air and forms a thick foam which contains microbubbles. These bubbles have a hollow bit in the middle and a thin layer of liquid on the outside. This layer of liquid is not completely transparent but stops some of the light coming through.
The foam thus acts as a mirror and appears to be white because they are just reflecting the light.
Why don’t Spiders get stuck in their own web?
Spiders have three specially adapted non-stick claws on each leg that allows them to scamper across their webs with relative ease. They also tend to lay a dragline for safety.
Should they fall into the web, they can become trapped, in which case their only escape is to eat their way out, aided by special saliva enzymes that dissolve the silk.
The New Seven Wonders of the world was announced in Lisbon on July 7, 2007, Saturday after a worldwide poll. The campaign to pick the seven wonders began in September 1999 by Swiss adventurer Bernard Weber. His Switzerland based foundation called New7wonders received almost 200 nominations from around the world. The list was narrowed down to 21 by early last year. Later it was reduced to 20 following complaints from Egypt over the Pyramids’ inclusion as a candidate in competition with others.
A robot is an electro-mechanical device intelligent agents that can perform preprogrammed tasks. They are programmable, self-controlled device consisting of electronic, electrical or mechanical units. A robot is a machine that works in the place of humans. The word robot was invented in the 20th century from the Czechoslovakian word ‘robota’ which means “forced labor” or “slave”. The branch of technology that deals with designing, construction, operations and application of robots is known as robotics.
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Commonwealth Games is a world-class multi-sport meet of athletes from around the world which is governed by the Commonwealth Games Federation (CGF). CGF selects the host country and even controls the sports program. Bobby Robbinson formed the CGF in the year 1930. Currently, there are 54 members of the Commonwealth of Nations. 71 teams participate in the Games. The major continents that organize the Commonwealth Games are Asia, Africa, America, Europe, the Caribbean, and Oceania.
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Barbie’s full name is Barbara Millicent Robert. Barbie was first introduced at the American International Toy Fair in New York on 9tth March 1959. The doll was invented by Elliot Handler, the founder of Mattel, Inc., and his wife, Ruth Handler. The doll was named after their daughter, Barbara. Barbie was a fantasy who portrayed independence and glamour. She was the symbol of post-war female independence who never compromised her freedom. Read More
Can’t remember if an egg is fresh or hard-boiled? Just spin the egg. If it wobbles, it must be raw. If it spins easily, it is hard-boiled. A fresh egg will always sink in water, a stale will float.
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Endangered Species are species, which are in danger of extinction. The survival of such species is difficult if the negative factors that have led to a decline in their population continue to operate. Endangerment involves the habitats and environments where species live and interact with one another. The strongest forces in rapid habitat loss are human beings. Every region of the earth has been affected by human activity. Humans cause the majority of threats to species, sites, and habitats. These threats are often interconnected and reinforce each other.
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How the symbol @ came to be used in Email Addresses?
Since medieval times business man-hour used the symbol @ as an abbreviation for ‘at’ or ‘each’ – for example ‘lac @ 1 pence a metre’. This is why it is included in the typewriters and subsequently, computer keyboards.
In 1972, American software engineer Ray Tomlinson, working for Computer Bolt, Beranek and Newman, devised the first e-mail program. For it to operate, he needed a symbol to separate the user name from machine details in e-addresses. The character had to be one that would never be found in someone’s name.