Sunday, 3 February 2013

pink-necked green pigeon

If all pigeons looked like this, maybe people wouldn't call them flying rats!
This is the pink-necked green pigeon (Treron vernans) and it's honestly not photoshopped.
They're found in Cambodia, Indonesia, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical mangrove forests, and subtropical or tropical moist montane forests.

damage suffered by a coral reef system

Human activity, rather than climate change, has been identified as the main cause of damage suffered by a coral reef system off the coast of Madagascar. The once-pristine 'Grand Récif of Toliara' has been degraded as a combination of problems, such as a one degree rise in average temperature, lower rainfall, overfishing and other damaging human activities.

WIN CASH PRIZE: IF YOU KNOW IT CONTEST-question no. (1)

here the first question out of five,plz join the site & then comment your answer to win.

The internal energy of a body means :

(a) Sum total of its kinetic and potential energy of its constituent molecules. 
(b) its kinetic energy 
(c) Total kinetic energy of its constituent molecules 
(d) Sum total of its kinetic and potential energy

Science: A Reflection Of Truth and Education?


17th-18th century schools of enlightenment, influenced by Becon and Descartes, established their existence over conventional legacies and religious dogmas. During regimes of scholars like Copernicus, Galileo, Tolstoy and Leibniz, new thinking in science brought society into the light of science and innovation.
During this time period, man gained a new way of thinking, overtaking conventional beliefs, stereotyped morality, and religious dogmas. Science helped to establish a factual truth.
The Objective of Science.
Science teaches individuals to independently without dependence on suppositions of ideologies, outdated facts and abstract views. The main objective of science is to provide a more purified view of knowledge through use of reason and proper evidence to authenticate thinking and research.
In practical terms, using experiments, trials and tests, people will be able to solve problems and better understand the exact reasons to explain any event. Nothing happens without a reason or driving force behind it. Scholars claim that seeing is believing. It is the observer's duty to accept logic, principle, and other ideologies through self-analysis, self-doubt, and introspection.
Everyone needs to be educated in the sciences, to better understand right and wrong and other functions of daily life. Science brings clarity to thoughts. From a viewing standpoint, a person needs proper perspective to achieve success in scientific endeavors and greater understanding!
Science Experiments to Enrich Knowledge
Apart from the importance of science as a field of study, science is also a great source of entertainment and recreation. At home there are many easy scientific experiments. Scientific experiments test the authenticity of any ideology, view or thought of anyone. Through simple scientific experiments, students can be easily trained in the sciences.
For instance, to teach your kids about Newton's gravitational law, the only material that you would need is a ball. This simple object can teach your child about the gravitation of the earth. Simply throw the ball in the air and it will fall back to the ground. Have your children watch the ball's movement. The gravitation of the earth pulls the ball back into a nosedive toward the ground.
Regardless of how hard you throw the ball, it will always come back down, as it is unable to break the gravitational pull of the earth. This type of home based scientific experiment is much more helpful for students to quickly learn about modern science.
Every day, people face different problems. Try to train students on how to invent powerful devices and innovative techniques to remove obstacles and make life more enjoyable. Science must be properly utilized to standard of living.

Thermodynamics in Thermography, Thomas Newcomen and James Watt


In 1712 Thomas Newcomen installed the first practical steam engines, which he called atmospheric engines, to pump water from coal mines. He was not at all the first to attempt this but was the first to succeed at it, and his individual engines were known to work for more than a century.
These were very inefficient but used both coal and water from the mine so no one much cared, they worked! Efficiency increases with their size, and so they tended to make larger and larger engines.
One of the things we Scots do is take other inventions and quite successfully improve them, and so James Watt did just that. Watt was tasked with repairing a Newcomen steam engine operated by Glasgow University he worked at and when he did, he realized the machine wasted about 75% of its energy.
The Newcomen design used the main cylinder both to expand with steam and then to create a vacuum by condensing the steam in the same cylinder wasting all the heat used to heat the cylinder in every cycle. Watt conserved much of this energy by the use of a steam jacket to maintain the heat in the cylinder and extracting the steam to a separate chamber for condensation.
This design allowed for a lot of innovation in the future, including smaller engines which used less coal, and less water, enabling the entire industrial revolution.
Newcomen utilized principles of thermodynamics and engineering that would later be described, but Watt significantly improved these by simply insulating the cylinder and then isolating the condensation.
Twenty eight years ago we were working on diesel powered aircraft carriers both spotting electrical issues, but primarily to resolve heat loss issues. We would identify areas where insulation, or it improvement was needed then calculate the heat loss and savings if the insulation was added, changed, or corrected. The ships wasted heat by it radiating thermal energy from the boilers and pipes, which necessitated its removal in order to make a better working environment, so they paid for the fuel, and then to have the resulting heat removed using large fans to vent the heat into the atmosphere.
This is an interesting parallel to me, with the last name of Newcomb and a Watt as a grandfather.
The US Navy learned the lesson and now pays much more attention to this issue and in the same effort reduces energy loss.
Most thermographic inspections of ships today focus on electrical issues since few ships use much steam today; however, the savings from these inspections have shifted from fuel savings to saving equipment from premature failure.
Have the savings diminished? Not at all, a qualified marine thermographer may inspect 500-900 devices on a ship, reducing maintenance expenses and premature component failures, and prevent several fires each year, and a small fire in the Motor Control Center can cost between one half to one million dollars in damage when all costs are considered returning the investment many times over.

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USB flash drive


Internals of a typical USB flash drive
1 USB Standard, Male A-plug
2 USB mass storage controller device
3 Test points
4 Flash memory chip
5 Crystal oscillator
6 LED (Optional)
7 Write-protect switch (Optional)
8 Space for second flash memory chip