Science

Most Comments Last Updated

Navy Railgun

The railgun takes its name from the two highly-conductive and electrically charged rails that form an electric circuit once a projectile is loaded.http://www.technologyreview.com/Infotech/20164/?nlid=857&a=f Unlike an explosion using gunpowder, the railgun uses these electromagnetic currents to accelerate its non-explosive projectiles. By being sent through several electrically charged parallel rails, the railgun's projectiles are accelerated to several times the speed of sound, up to Mach 7.http://www.foxnews.com/scitech/2010/12/10/navy-railgun-shoots-bullets-electromagnet/

The weapon's design allows it to fire at two to three times the velocity of the navy's conventional weapons, allowing it to hit a target within 6 minutes. The railgun also has a longer range than the navy's conventional weapons, currently being able to fire up to 100 miles. The navy hopes to achieve the even higher range of 200 miles and pinpoint accuracy at this range through GPS technology.http://www.foxnews.com/scitech/2010/12/10/navy-railgun-shoots-bullets-electromagnet/

updated 2010-12-16 23:10:56

comments: 0

Coyote

The coyote is nocturnal. It hunts in pairs, with entire families or alone.Animal Diversity Web: Coyote During the fall and winter months, coyotes form hunting packs.National Geographic: Coyote

It generally uses burrows formed by woodchucks or badgers as dens.Animal Diversity Web: Coyote

In the spring, female coyotes will have her pups, which are fed and protected by both parents. By the following fall, the pups can hunt on their own.National Geographic: Coyote

updated 2010-07-17 02:18:36

comments: 0

Milky Way

Due to the Milky Way's gravity, it attracts other local galaxies to it. Therefore, nearby galaxies will eventually collide with the Milky Way, making one larger galaxy and destroying some stars in the process. The process is known as galactic cannibalism and will not happen to the Milky Way for another 3 billion years.Space.com: Galactic cannibalism

updated 2010-07-17 15:45:27

comments: 0

Rosemary Alvarez

Doctors thought Rosemary Alvarez had a brain tumor, though once they entered her skull to perform surgery in a Phoenix, Arizona-area hospital, her doctors found a worm instead of a tumor.

Alvarez had been experiencing numbness in her limbs and blurred vision for at least two years before a close inspection of her MRI films revealed a disturbing mass embedded near her brain stem. Alvarez was rushed to a neurological hospital for emergency surgery. When the doctor's underwent the procedure to dislodge the deep tumor, they were surprised to find a parasitic worm living in her brain instead. Her doctors believe that since the worm is now removed she shouldn't expect any more symptoms.

updated 2010-07-17 20:36:23

comments: 0

XCOR Aerospace

1. EZ-Rocket: First rocketplane, flown 26 successful test flights
2. Rocket Racer: Derivative of the EZ-Rocket, to be used in the Rocket Racing League
3. Lynx suborbital vehicle: Reusable craft to take passengers into suborbital spaceOfficial Site: XCOR Aerospace - Products Overview
   • -Formerly known as the Xerus suborbital spaceplaneThe Space Review: One size may not fit all (March 31, 2008)

updated 2010-07-18 03:02:55

comments: 0

Marcellus Shale

The Marcellus Shale is a rock formation estimated at 365 million years old. It is composed of porous shale that is rich in natural gas. U.S. Geological Survey researchers have estimated that the formation may hold up to 3.7 trillion cubic feet of recoverable gas. Other research conducted by Pennsylvania State University claims that the deposits may be more in the range of 50 trillion cubic feet. It is believed to be the biggest deposit of natural gas in the Appalachian Basin. The natural gas deposits in the Marcellus Shale formation are more than a mile deep in the earth. Only recently has technology become available that will be able to extract the ore and the gas it contains from such depths. As a result, many companies are now vying for the drilling rights across the location of the shale formation. The formation covers an area from New York State to Ohio and West Virginia - a total of approx. 54,000 square miles. By tapping into such a huge reserve of natural gas, scientists are hopeful that the formation will alleviate some of the pressure currently on the market. Natural gas prices on the consumer end have doubled over the last few years.

updated 2010-07-17 14:36:46

comments: 0

Lions

• Wikipedia: Cowardly Lion

• IMDb: The Lion King

• Wikipedia: Leo (Astrology)

• Jewish Heritage Online: Lions in Jewish Art

• • This page was created by Mindy H, a Part Time Guide in the Mahalo Greenhouse (see the original), and curated by Mike.

• If you'd like to help us create the best spam free search results on the Internet, apply to be a Part Time Guide!</em>

updated 2010-07-17 13:42:43

comments: 0

Mental Math

• Amazon.com: Mental Math Books

• Half.com: Mental Math Books

• Google Book Search: Mental Math Books

• Mental Math Master: The Best Strategy for Learning Mental Math

• • This page was created by Lorraine, a Part Time Guide in the Mahalo Greenhouse (see the original), quality controlled by Cherryl, and curated by Matt.

• If you'd like to help us create the best spam free search results on the Internet, apply to be a Part Time Guide!</em>

updated 2010-07-17 15:17:52

comments: 0

Interferometry

When two light waves interfere, they combine depending on what phase they are in. If one wave's peak is aligned with the other's trough, they cancel each other out (destructive interference). However, if both peaks and troughs are aligned, then a new wave will be formed with a greater amplitude (constructive interference).http://www.space.com/scienceastronomy/astronomy/interferometry_101.html The amplitude will increase by the sum of the original two amplitudes plus double the square root of the multiplication of both amplitudes. http://docs.google.com/viewer?a=v&q=cache:EhQiK86DrC8J:www.optics.arizona.edu/jcwyant/Short_Courses/SIRA/2-BasicInterferometryAndOpticalTesting.pdf+interferometry+basics&hl=en&gl=us&pid=bl&srcid=ADGEESjNBlHvUv9yPOAOxWelulIAgZ-Cb_NBJeiiV1kkryiymR3s8mamlY-v3JMJFTtlWRa6SswZNhBqTcnqSIRF4pFAtWm_MeK9N3oIG3wZM7vq_So0uIJBchhlVf0SLg4jmJfVGbr8&sig=AHIEtbQYMxhxUEIpYwZURTx15yMSFMLY9w

In an interferometer, the path of both waves is constructed in such a way to maximize the amplitude. http://outreach.atnf.csiro.au/education/senior/astrophysics/interferometry.html#interfoptical http://www.europhysicsnews.org/index.php?option=com_article&access=standard&Itemid=129&url=/articles/epn/pdf/2001/06/epn01613.pdf The wave, after interference, is displayed as a series of dark and bright lines. http://docs.google.com/viewer?a=v&q=cache:EhQiK86DrC8J:www.optics.arizona.edu/jcwyant/Short_Courses/SIRA/2-BasicInterferometryAndOpticalTesting.pdf+interferometry+basics&hl=en&gl=us&pid=bl&srcid=ADGEESjNBlHvUv9yPOAOxWelulIAgZ-Cb_NBJeiiV1kkryiymR3s8mamlY-v3JMJFTtlWRa6SswZNhBqTcnqSIRF4pFAtWm_MeK9N3oIG3wZM7vq_So0uIJBchhlVf0SLg4jmJfVGbr8&sig=AHIEtbQYMxhxUEIpYwZURTx15yMSFMLY9w Most people are familiar with this as the "slit" experiment. http://www.space.com/scienceastronomy/astronomy/interferometry_101.html The slits will be brighter than the original beam. Many different aberrations can occur in the resulting pattern, which can be due ...

updated 2010-10-16 00:36:29

comments: 0