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ZDNet Dictionary Definition
- Diffraction
- The bending of electromagnetic waves as they pass around corners or through holes smaller than the wavelengths of the waves themselves. See diffraction grating and refraction.
- Full Diffraction Definition >>
ZDNet Resources
- 3-D pictures taken inside nanocrystals
- Taking 'photographs' of individual molecules in action is probably not on the list of your next summer vacation. However, an international team of scientists from Australia, England and the U.S. has found a way to get full 3-D images of the interior of nanocrystals. Their technique, known as coherent X-ray...
- Tags: diffraction, imaging, Imperial College London
- Blog posts 2006-07-06
- From biological imaging to Sudoku
- Scientists are like you and me: they sometimes need to relax. This is why Veit Elser, professor at Cornell University, has applied an algorithm developed for X-ray diffraction microscopy to solve Sudoku puzzles. The difference-map algorithm, which he discovered with other chemists and physicists, will be primarily used for biological...
- Tags: diffraction, X-ray diffraction, algorithm, X-ray
- Blog posts 2006-03-03
Additional Resources
- Shooting movies of molecules
- Scientists at the U.S. Department of Energy's DOE Argonne National Laboratory have developed techniques for creating movies of biological and chemical molecules. It has been done before for crystalline structures of salt or metals, but organic molecules are more complex, and more difficult to catch. Until now, researchers had to...
- Tags: Argonne National Laboratory, Molecule, Biotechnology, Productivity, Research & Development, Business Operations, Roland Piquepaille
- Blog posts 2008-04-17
- How I (finally) shared a Wi-Fi connection with my neighbors
- How I finally shared a Wi-Fi connection with my neighborsNice Work!ntRE: How I finally shared a Wi-Fi connection with my neighborsInteresting but just a small technical point. the "signals" are radio waves that travel in straight lines. nothing can make the signal "wend it's way around the metal...
- Tags: Wireless LANs, WIRELESS, Network technology, Wi-Fi connection, Wi-Fi, cable
- Discussion threads 2008-03-18
- Datasqueeze (bin)
- Datasqueeze is a graphical interface for analyzing data from 2D x-ray diffraction detectors (wire, image plate, CCD), running on Windows, Linux, and Macintosh OS X. The interface is simple and intuitive, and the program is easy to use even for those new to x-ray diffraction analysis. Datasqueeze is particularly useful...
- Tags: Polymer, Analysis, Datasqueeze Software
- Software downloads 2008-02-27
- Lensless camera for nanoscale imaging
- Australian and U.S. scientists have developed a lensless camera which uses X-rays to view nanoscale materials and biological specimens. As says one researcher, 'there is no lens involved at all; instead, a computer uses sophisticated algorithms to reconstruct the image.' Future microscopes equipped with these lensless cameras could be used...
- Tags: Imaging, Scientist, Image, Camera, Argonne National Laboratory, Advanced Photon Source, X-ray, X-ray Energy, Document Management, Enterprise Software, Software, Finance, Managerial Accounting, Roland Piquepaille
- Blog posts 2008-02-25
- Datasqueeze (msi)
- Datasqueeze is a graphical interface for analyzing data from 2D x-ray diffraction detectors (wire, image plate, CCD), running on Windows, Linux, and Macintosh OS X. The interface is simple and intuitive, and the program is easy to use even for those new to x-ray diffraction analysis. Datasqueeze is particularly useful...
- Tags: Polymer, Analysis, Datasqueeze Software
- Software downloads 2008-02-04
- The secret of levitation
- Several U.K. news sources are reporting today that two Scottish researchers have developed a theory to 'levitate' very small objects. According to The Scotsman, their theory involves what is known as the 'Casimir force.' By reversing the Casimir force so that it repels instead of attracts, their discovery could...
- Tags: Force, Theory, Quantum Corp., Roland Piquepaille
- Blog posts 2007-08-06
- Polymer opal films are not for rings
- British and German researchers have developed a new type of flexible plastic film. These 'polymer opal films' can change colors under certain conditions. For example, they could easily help you to see if some kind of perishable food items are not good anymore because the packaging would change color. They...
- Tags: Science &, Nature, Nanotechnology, Engineering &, Innovation
- Blog posts 2007-07-28
- A new nanowire light source
- Californian researchers have created a bio-friendly nano-sized light source capable of emitting coherent light across the visible spectrum. According to the researchers, this is 'the first electrode-free, continuously tunable coherent visible light source that's compatible with physiological environments.' When the technology becomes available, maybe in 10 years, our computers might...
- Tags: Science &, Nature, Nanotechnology, Engineering &, Innovation, Energy &, Environment
- Blog posts 2007-07-02
- Want the ultimate audio? These speakers cost $150,000 a pair
- So let's just suppose you are a HDTV fanatic, and/or like to watch Internet tv on your huge- not just widescreen but huge- tv screen that's the centerpiece of your home entertainment system.And what if you want to squeeze every bit of quality audio you can out of your...
- Tags: Products
- Blog posts 2007-05-29
- Making the most out of your megapixels
- Making the most out of your megapixelsAs I said in an earlier post...... if the pixels in the chip get too small then diffraction limiting comes into play. An image is made up in optical terms of a series of very small discs whose size is related to the diameter...
- Tags: camera
- Discussion threads 2007-02-21
- The exception to the digital cam scam (a.k.a. When megapixels actually matter)
- The exception to the digital cam scam (a.k.a. When megapixels actually matter)Address the DPI issue?The other point that you should probably address has to do with the DPI of the output device being used to view a picture. A 500x300 pixel image viewed on an LCD with its lower...
- Tags: camera, DPI, pixel, wide angle
- Discussion threads 2007-02-12
- Synthetic proteins better than real ones?
- Researchers at the Howard Hughes Medical Institute HHMI and Yale University have built proteins which dont exist in the natural world. Theyve constructed these proteins from beta-amino acids, which are distinct from the alpha-amino acids that compose natural proteins. Their synthetic proteins are as stable as natural ones, but provide...
- Tags: Health &, Medicine, Science &, Nature, protein
- Blog posts 2007-02-08
- A photonic 'lab-on-a-chip'
- Georgia Tech researchers have shrunk an optical device called wavelength demultipler WD by combining into one crystal three unique properties of photonics crystals. This optical discovery opens the way to sophisticated and cheap biosensors mounted on 'lab-on-a-chip' devices -- sensors to run blood tests, detect chemicals in water supplies or...
- Tags: wavelength, wavelength demultipler
- Blog posts 2006-08-06
- Catching photons coming from the moon
- In "Shooting the moon," the San Diego Union-Tribune describes how and why physicists from UCSD are using lasers to send light pulses in direction of an array of reflectors installed on our moon in 1969 by Neil Armstrong and Buzz Aldrin. One of the goals of these experiments is to...
- Tags: moon, laser
- Blog posts 2006-07-14
- Would you wear video glasses?
- According to EE Times, an Israeli company has developed a personal video display device that looks like a simple pair of glasses. You can use these glasses with various sources, such as a portable media player or your cell phone. This technology promises to eliminate the dizziness phenomenon usually associated...
- Tags: Mirage Innovations Ltd.
- Blog posts 2006-05-05
- Smart glasses may soon replace bifocals
- Presbyopia is a visual defect which affects many people over 40 years old, including myself. As we cannot focus on close objects, we tend to rely on bifocal glasses. But with bifocals, the two parts of the lenses focus separately on two different distances and it can be difficult for...
- Tags: PixelOptics
- Blog posts 2006-04-23
- Very high-speed nanoimaging
- Researchers at the Georgia Institute of Technology have built a new device which is 100 times faster than current nano imaging technology. Not only the FIRAT Force sensing Integrated Readout and Active Tip is much faster than atomic force microscopy AFM, it also is able to take movies and to...
- Tags: atomic force microscopy, FIRAT
- Blog posts 2006-02-14
- The wonderful nanoworld of corrosion
- Do you know that chemical corrosion affects about 3% of the world's gross domestic product? But this impact is not exclusively negative. European researchers have studied the nanoworld of corrosion and found that "chemical attack of metal surfaces may result into surface nano-structures with very interesting technological applications." They also...
- Tags: corrosion, European Synchrotron Radiation Facility
- Blog posts 2006-02-13
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