Ranks & Reports

Before kitchens were ventilated, cooking was a smelly and smoky experience. The kitchen would quickly fill with smoke and nasty gases, stinky odors would spread throughout the house, and grease would stick to and damage the walls. However, in 1933, Vent-a- Hood set about making cooking in the home a more enjoyable and safe experience and invented the first kitchen extractor. Also known as an extractor hood, it was able to capture all the by-products of cooking, except grease. Early kitchen extractors were considered, quite correctly, to be fire hazards because the grease they could not catch could easily ignite with the high temperatures generated by cookers. Later extractor designs, using wire mesh to catch grease, were incredibly inefficient and could only capture about 25 percent of the product. In 1937, Vent-a-Hood improved their original design and incorporated a special blower into their kitchen extractor, known as the Magic Lung®, more...

"You guys have really come up with somethin'..." Dr. Flood, 200: A Space Odyssey (1968) The first wrist-worn timepiece to tell the time digitally was the Hamilton Watch Company's "Pulsar." This 18-carat gold-cased device used a red LED display to tell the user what time it was in clean, crisp, twentieth- century digits at the push of a simple button, and retailed for a cool $2,100. Teething problems meant the Pulsar did not become commercially available until 1972, but when it was released, it caused many to think that the end had come for conventional dial face watches with mechanical movements. Hamilton claimed that their inspiration for developing a digital watch was the futuristic digital clock that they had created for the 1968 film 2001: A Space Odyssey. The only problem with the Pulsar was the hefty accompanying price tag—although many would argue that $2,100 was cheap for the opportunity more...

For millennia, humankind has kept track of the progress of time by observing natural bodies, most notably the sun and the stars. In cloudy periods, however, these cannot be seen. The water clock, or clepsydra in Greek, is a timekeeper that works by measuring a regulated, uniform flow of water out of, or into, a vessel. With sufficient water, and a large enough vessel, this timekeeper can "run" for a day or two without needing to be refilled, or emptied. Imagine a cylindrical water container with a hole in the bottom. The rate at which water drips out of the container is a function of the pressure exerted by the water that it contains; so the more water in the vessel (that is, the greater the "head" of water) the faster is the flow rate. When the container is full, the water level goes down quickly, but the flow is more...

Multimedia is, in computer science, the presentation of information using the combination of text, sound, pictures, animation and video. Common multimedia computer applications include games, learning software and reference materials, such as encyclopaedia. Most multimedia applications include predefined associations, known as hyperlinks that enable users to switch between media elements and topics. Thoughtfully presented multimedia can enhance the scope of presentation in ways that are similar to the roving associations made by the human mind. Connectivity provided by hyperlinks transforms multimedia from static presentations with pictures and sound into an endlessly varying and informative interactive experience. Multimedia applications are computer programs, typically they are stored on compact discs (CD-ROMs). They may also reside on the World Wide Web, which is the media- rich component of the international communication network known as the Internet. Multimedia documents found on the World Wide Web are called Web pages. Linking information together with hyperlinks more...

Ideology is a way of thinking that reflects the social need and political doctrines of an individual or group. There are many different people and different circumstances. The results in a variety of different ways of thinking, values and beliefs. Our ideology grows with us from childhood. From the moment a child is born, the family's influence begins to impact his/her thought process. A child is like a sponge that absorbs ideas and beliefs. Belief are taught to a child in subtle ways such as just listening to the parents and their opinions from everything including politics, social problems, moral issues and even opinions about how others behave. It is within the family unit that a person learns their moral values. It is from their parents that a child is taught right and wrong. Often this is through religious training. Religious beliefs or the lack of religious beliefs has a more...

Before the Internet, there was  (the predecessor of today's Internet), created almost 25 years ago as an experimental network to support military research for the U.S. Defence Department. One of the primary design goals of  was to prove that distributed networking would protect the network from destruction by locating individual nodes as far apart from each other as possible.  grew from there as marketing opportunities forced its developers to create Inter-net Protocol (IP) software for nearly every conceivable type of computer. It didn't matter what type of computer equipment the government and universities had (since they had no nationwide standard for purchasing computer equipment), because the IP software was designed to be practically universal. In the early 80's, the National Science Foundation (NSF) stepped in and created five supercomputer centres and called it NSFNET. Now, anyone that could afford the cost of a leased-line connection could have packets routed to more...

the world today. She was born in 1910 in Macedonia with the name Agnes Gonxha Bojaxhiu. She was born into a family of deeply religious Catholics. Agnes felt she got the calling to work for God at the young age of fourteen. She joined the Loreto order and went to Bengal, India, to start her studies. In 1937, Agnes took her final vows to become a nun and has done much great work in the world since. Agnes Gonxha Bojaxhiu was born on August 27, 1910 to Nikola and Drana Bojaxhiu in Skopje, Macedonia. Drana and Nikola were Albanian and both were very deeply religious Roman Catholics. Nikola was a popular merchant and a partner to an Italian merchant. He owned several houses and was a member of the Skopje town council.   Whenever Agnes' father would return from a trip, he would always bring his children presents. Also, he more...

Drugs use is the increasing problem among teenagers in today's high schools. Mostly drug use begins in the preteen and teenage years, the most crucial years in the maturation process. Today, adolescents are faced with difficult tasks of discovering their self-identity, clarifying their sexual roles, asserting independence, learning to cope with authority and searching for goals that would give their lives meaning. Drugs are readily available, adolescents are curious and vulnerable, and there is peer pressure to experiment, and there is a temptation to escape from conflicts. The use of drugs by teenagers is the result of a combination of factors such as peer pressure, curiosity, and availability. Drug addiction among adolescents in turn leads to depression and suicide. One of the most important reasons of teenage drug usage is peer pressure. Peer pressure represents social influences that affect adolescents. It can have a positive or a negative effect, depending more...

National Talent Search Examination (NTSE) is a national-level scholarship program in India to identify and recognize students with high intellect and academic talent. It is one of the most prestigious exams in India. The scheme is open to students of Indian nationality. Only students studying in Class X are eligible to appear for the selection process. As it is organized by an official body (NCERT), it is widely regarded by the Government of India as the toughest and most prestigious examination in the country. Qualifying students were awarded the scholarships on the basis of a written examination, a project report and an interview. The written examination comprised the Science Aptitude Test and an essay on a given scientific theme. The candidates were to submit the project report at the time of the written examination. A stipulated number of candidates selected on the basis of those three components were then subjected to personal interviews. The performance more...

NEET is an acronym for National Eligibility cum engineering test.  The Medical Council of India and the Dental Council of India have notified that the Central Board of Secondary Education shall be the organization to conduct the National Eligibility cum Engineering test for admission to MBBS and BDS courses. The responsibility of CBSE is limited to the conduct of the entrance examination, declaration of the result and providing the merit list to the Counselling Authorities. NEET is another sort of medical entrance exam conducted all over India for the students. StudyAdda prepares the students for all the examinations that are conducted all over India. The NEET study packages on StudyAdda have been proving highly beneficial to all the students. NEET study packages make students to work a lot on their brains and this brain storming helps students capable enough to answer any kind of questions. The students who solve these more...