Sunday, February 25, 2007

Space Shuttle Solid Rocket Booster

The Space Shuttle Solid Rocket Booster is the rocket that provides 83% of liftoff thrust for the Space Shuttle. It is the major and most powerful solid rocket ever flown, and the most powerful rocket motor of any type ever flown. Each SRB produces 1.8 times the liftoff thrust of the F-1 engine used in the Saturn V moon rocket.
The two reusable SRBs provide the main thrust to lift the Space Shuttle off the pad and up to an altitude of about 150,000 feet . In addition, the two SRBs carry the whole weight of the external tank and orbiter and transmit the weight load through their structure to the mobile launcher platform. Each booster has a liftoff thrust of approximately 2,800,000 lbf at launch. They are ignited after the three space shuttle main engines' thrust level is verified. The two SRBs provide 83 % of the thrust at lift-off. Seventy five seconds after SRB separation, SRB apogee occurs at an altitude of approximately 220,000 feet , after which they land on parachutes; impact occurs in the ocean approximately 122 nautical miles downrange, after which the two are recovered.

Tuesday, February 20, 2007

Mysore Palace

A silhouette of the Mysore Palace illuminated with ninety seven thousand bulbs shining against an inky black night is one of the most enduring images of the city.
A priceless national wealth and the pride of a kingdom, the Mysore Palace is the seat of the famed Wodeyar Maharajas of Mysore.
An free synthesis of architectural styles the palace is one of India’s most dramatic national monuments. Today it is a museum housing treasures from across the world reflecting the rich and colorful history of the previous significant state of Mysore.
The Mysore Palace is open all days of the week, from 10 a.m. to 5:30 p.m. The palace is not opened on Sundays, national holidays and state festivals from 7:00 p.m. to 8 p.m. The palace is illuminated between 7 p.m. to 9 p.m. only for the period of the Dasare festival.
If you would like to treat yourself to a private guided tour of the entire palace complex, Mysore Palace Board specialized tour guides can be found at the entrance to the palace. The guides will guide you to the things to see of the Mysore Palace at a nominal fee.

Wednesday, February 14, 2007


Penguins are excellently adapted to an aquatic life. Their wings have grow to be flippers, useless for flight in the air. In the water, however, penguins are astonishingly agile. Within the soft plumage a layer of air is preserved, ensuring buoyancy. The air layer also helps protect the birds in cold waters. On land, penguins use their tails and wings to maintain balance for their upright stance.
All penguins are counter shaded - that is, they have a white underside and a dark (mostly black) upperside. This is for camouflage. A predator looking up from below (such as an orca or a leopard seal) has difficulty distinctive between a white penguin belly and the reflective water surface. The dark plumage on their backs camouflages them from over.
Diving penguins reach 6 to 12 km/h (3.7 to 7.5 mph), although there are information of velocities of 27 km/h (17 mph) (which are more practical in the case of startled flight). The small penguins do not generally dive deep; they catch their prey near the surface in dives that normally last only one or two minutes. Larger penguins can dive deep in case of need. Dives of the large Emperor Penguin have been recorded which get to a depth of 565 m (1870 ft) and last up to 20 minutes.
Penguins either waddle on their feet or slide on their bellies across the snow, a movement called "tobogganing", which allows them to keep energy and move fairly fast at the same time.Penguins have an superb sense of hearing. Their eyes are personalized for underwater vision, and are their primary means of locating prey and avoiding predators; in air, equally, they are nearsighted. Their common sense of smell has not been researched so far.They are able to drink salt water securely because their supraorbital gland filters excess salt from the bloodstreamThe salt is excreted in a concentrated fluid from the nasal passages.

Sunday, February 11, 2007


Many plants or plant parts are eaten as food. There are around two thousand plant varieties which are cultivated for food, and many have several distinct cultivars.Plant-based foods can be classified as follows: Seeds, the ripened ovules of some plants, carry a plant embryo inside them along with the nutrients necessary for the plant's initial growth. Because of this, seeds are often packed with energy, and are good sources of food for animals, including humans. In fact, the majority of all foods consumed by human beings are seeds. These include cereals (such as maize, wheat, and rice), legumes (such as beans, peas, and lentils), and nuts. Oilseeds are often pressed to produce rich oils, including sunflower, rape (including canola oil).Fruits are the ripened extensions of plants, together with the seeds within. Fruits are made attractive to animals so that animals will eat the fruits and excrete the seeds over long distances. Fruits, therefore, make up a significant part of the diets of most cultures. Some fruits, such as pumpkin and eggplant, are eaten as vegetables.Vegetables are other plant matter which is eaten as food. These include root vegetables (such as potatoes and carrots), leaf vegetables (such as spinach and lettuce), stem vegetables (such as bamboo shoots and asparagus), and inflorescence vegetables .Many herbs and spices are highly-flavorful vegetables.

Monday, February 05, 2007

Essentials of healthy life-cleanliness a brief review

Health is wealth so preserve it. Life is short so use it in the right way. Cleanliness merely fits with the apt meaning of being free from dirt, dust, germs and bad smells. A recent shift has now taken place to recognise that 'germs' may play a major role in our immune systems. So experts say washing hands frequently, specially when in an environment of many people with infections and diseases. Washing is one of the best way to achieve cleanliness.Have a brief overlook on the following issue to be aware of how to keep one self clean.
A step way process regarding cleanliness of hands is given below:
• Use warm water
• But avoid scorching your hands.
• Use anti-bacterial soap or hand wash.
• Wash between fingers and use paper towels to wipe off.
Washing of hands has to be followed
• Before eating
• After eating
• After using the toilet
• After playing outdoor games
• After attending to a sick person
• After blowing nose, coughing, or sneezing; and after handling pets.
The proverb "Cleanliness is next to Godliness," a common phrase that describes humanity's high opinion of being clean. Purposes of cleanliness include health, beauty and to avoid the spreading of germs .If your hands have any kind of skin cut or infection, wash hands with an anti bacterial soap. Thoroughly wash with hot, soapy water all surfaces that come in contact with raw meat, poultry, fish, and eggs before moving on to the next step in food preparation. Consider using paper towels to clean kitchen surfaces.Keep pets, household cleaners, and other chemicals away from food and surfaces used for food. Along with removing any old food or dirty water, it's a very good practice to clean the bowls or containers that the food and water are in, ever Hygienic practices—such as frequent hand washing or the use of boiled (and thus sterilized) water have a profound impact on reducing the spread of disease. This is because they kill or remove disease-causing microbes (germs) in the immediate surroundings. For instance, washing one's hands after using the toilet and before handling food reduces the chance of spreading E. coli bacteria and Hepatitis A, both of which are spread from fecal contamination of food.-healthyPersonal cleanliness:sadblack1 common
• Daily washing of the body and hair.
• More frequent washing of hands and face.
• Oral hygiene—Daily brushing teeth.
• Cleaning of the clothes and living area.
• Use of bandaging and dressing of wounds.
• Not touching animals before eating.
• avoidance of unhygienic people.
• Holding a tissue in your hand when coughing or sneezeing.
• Suppression of habits such as spitting or nose-picking.
• Washing hands before eating.
• Not licking fingers before picking up sheets of paper.
• Cut finger nails and toe nails.