PHYSICS
Get flash to fully experience Pearltrees
SciTech Daily Review - science, news, technology, future developments, innovations, opinions, review
The world’s largest telescope will be the Square Kilometer Array, and when it starts peering into radio waves emanating from the skies, it will generate 1,000,000 terabytes of data each day. All of this data needs to be processed, and IBM is building a supercomputer to handle it. 1,000,000 terabytes, or one exabyte, is a [...]
Scirus - for scientific information
is the most comprehensive scientific research tool on the web. With over 440 million scientific items indexed at last count, it allows researchers to search for not only journal content but also scientists' homepages, courseware, pre-print server material, patents and institutional repository and website information.
Do magnetic nerves help pigeons navigate? Maybe they're not even present! How do homing pigeons find their way on their amazing migrations? For a decade, scientists thought iron-bearing nerve cells in the beak can detect Earth's magnetic field. But those iron granules are in immune cells.
The Why Files | The Science Behind the News
Science Daily: News & Articles in Science, Health, Environment & Technology
Honey bees "self-medicate" when their colony is infected with a harmful fungus, bringing in increased amounts of antifungal plant resins to ward off the pathogen. ... > full story Scientists take an important step in developing a material using nano-sized magnets that could lead to new electronic devices. Researchers have demonstrated that large arrays of nano-magnets can be used to store computable ... > full story Biologists have found in a study of all 23 living crocodilian species that crocodiles can kill with the strongest bite force measured for any living animal. The study also revealed that the bite forces of the largest extinct ... > full story125th Anniversary Issue: Science Online Special Feature
I n a special collection of articles published beginning 1 July 2005, Science Magazine and its online companion sites celebrate the journal's 125th anniversary with a look forward -- at the most compelling puzzles and questions facing scientists today. A special, free news feature in Science explores 125 big questions that face scientific inquiry over the next quarter-century; accompanying the feature are several online extras including a reader's forum on the big questions. The Signal Transduction Knowledge Environment highlights some classic Science papers that have influenced the study of cell signaling. The Science of Aging Knowledge Environment looks at several important questions confronting researchers on aging.
Relativity: Einstein's theory of relativity in animations and film clips. Einstein Light
Einstein's theory of special relativity includes electricity and magnetism in a simple, logical extension of the relativity of Galileo and Newton. Its conclusions, including time dilation, length contraction, and E=mc 2 have changed profoundly our ideas of time and space, matter and energy.
Molecular Expressions: Images from the Microscope
Secret Worlds: The Universe Within - Soar through space starting at 10 million light years away from the Milky Way down through to a single proton in Florida in decreasing orders of magnitude (powers of ten). This tutorial explores the use of exponential notation to understand and compare the size of things in our world and the universe, and provides a glimpse of the duality between the macroworld around us and the hidden microworld within. NEW! - Carl Zeiss MicroImaging Online Campus - Visit the new ZEISS website that explores the fascinating world of optical microscopy and provides the necessary background to understand both the basic concepts and advanced principles. Included are review articles, interactive Flash tutorials, reference materials, and image galleries.
Grameen Foundation helps the world’s poorest people lift themselves out of poverty through access to information, small loans, and viable business opportunities. Follow us online!
Vote for Grameen Foundation! | Grameen Foundation
How Time Works"
Making you an expert on everything. Time is something that most of us take for granted. Have you ever thought about why, for example, there are 12 months in a year? Why are there 30 days in September? Why are there time zones and what's with daylight-saving time?
We’ve all stood outside at night and admired the stars, wondering how they were created and whether there might be life somewhere among them.
Origins
Einstein | American Museum of Natural History
Organized by the American Museum of Natural History, New York; The Hebrew University of Jerusalem ; and the Skirball Cultural Center , Los Angeles. Einstein is made possible through the generous support of Jack and Susan Rudin and the Skirball Foundation, and of the Corporate Tour Sponsor, TIAA-CREF .He received patent number 4,177,779 Dec. 11, 1979, which described "A fuel economy system for an internal combustion engine which, when installed in a motor vehicle, obviates the need for a conventional carburetor, fuel pump and gasoline tank. The system operates by using the engine vacuum to draw fuel vapors from a vapor tank through a vapor conduit to a vapor equalizer which is positioned directly over the intake manifold of the engine." In 1981, Ogle died at the young age of 26.