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China closed the world's highest and longest glass bridge after just 16 days
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The world’s longest glass-bottomed bridge in China's Hunan Province, which opened just over two weeks ago has been closed to the public. The Brave Men’s Bridge is 984 feet long, and spans a 590-foot deep crevasse. People attempting to make the terrifying walk across resorted to closing their eyes, crawling, and holding on to the rope guide for dear life. According to officials, the bridge is attracting too many tourist, deeming it unsafe. The glass floor is made up of a 24 millimeter (approximately one inch) thick glass, and there’s nothing but air below. ...
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5119 |
duddy |
7 years ago |
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How to learn anything using the Feynman Technique
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Richard P. Feynman (1918 - 1988) was a New York City born, Nobel Prize winner in Physics in 1965. He was an American theoretical physicist known for his work in quantum mechanics, as well as in particle physics for which he proposed the parton model. Feynman developed a widely used pictorial representation scheme for the mathematical expressions governing the behavior of subatomic particles, which later became known as Feynman diagrams (below). His passion for science and education later lead him to develop a universal learning model, now called the Feynman Technique, that could help you learn practically anything no matter how difficult or complicated. As long you or the educator uses simple terminology (no complicated words or terms), you ...
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15483 |
duddy |
7 years ago |
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Hammers are no match for this glass
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The tough-yet-fragile physical properties of the tadpole-shaped pieces of glass known as Prince Rupert’s drops have puzzled physicists for as long as, well, there have been physicists. Bash the head with a hammer, and a drop gets barely a scratch. But break off its thin tail, and it shatters into fine powder. Researchers long ago realized that the strength of the drops - named for Prince Rupert of Bavaria, who presented five of them to Britain’s King Charles II in 1660 - has something to do with stresses in the glass created when a drop is made by letting a blob of molten glass fall into water, so that it cools rapidly. Twenty years ago, a pair of researchers took high-speed video of a drop disintegrating showing that, when the tail is brok ...
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3833 |
bio_man |
6 years ago |
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How to Prepare for Your Next Physics Exam
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Taking a physics exam without first practicing problem solving is like pinch-hitting in a crucial game without having taken batting practice.Preparing for an exam in physics has two parts. You must make sure that you know how to work problems given a list of formulae, and you must ensure that you can reproduce the formulae. These tasks are rather separate. The first step in ensuring that you can work problems is to keep up with the assignments as they are due. There is simply too much to learn to postpone this work to the last minute. As you go along you should make sure that you have mastered each type of problem. You should review assigned problems that you got wrong and get help with those where you do not understand what you did wrong. Y ...
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4967 |
bio_man |
6 years ago |
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First ever exoplanets discovered outside our galaxy
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Using a technique known as gravitational microlensing, Oklahoma University astrophysicists were able to detect several exoplanets within a quasar 6 billion light-years away called RX J1131-1231 (depicted in the illustration above, left). Their research shows that the planets range in size from masses as small as the Moon to ones as great as Jupiter. The idea behind this technique is derived from the Einstein's theory of general relativity. Since light waves bend when they pass through space warped by a large gravitational presence, a planet passing in front of a star can act as a lens to focus the light, creating a temporary sharp increase in a star’s brightness, and changing the apparent position of the star. Currently, it's the only known ...
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1113 |
bio_man |
6 years ago |
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The staircase that defies science
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 The Loretto staircase – built within the Loretto Chapel in New Mexico, USA – is by far the most remarkable staircase ever built. It features a double-helical spiral structure that spans 20 feet in altitude, and remains intact without the use of a central pole. The staircase is built mostly out of wood and is held together by wooden pegs and glue rather than nails or other hardware. The staircase is venerated by Catholics as being miraculous, not due to its marvel, but based on the events that have been passed down by the Sisters of chapel ever since it was built in the late 1800s. Before the construction of the Chapel could be completed, the architect responsible for the building's design had suddenly died, leaving the nuns without access to ...
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5629 |
bio_man |
2 years ago |
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