01/16/2012

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Photosnet - All About Photos I am myself a big fan of photos and when given free half-day, I am pleased I can go on nature or the city to make good shots. After that, I love to process them in Photoshop. And once I thought it a good idea would make such a site, which will focus on photography. Specific focus, I do not want to allocate, and I will not. There will be a completely different article about the photo. Starting from the reviews of cameras and ending with various lessons on Photoshop. The history of inventions sometimes very bizarre and unpredictable. It has been exactly 40 years since the invention in the field of semiconductor optoelectronics, which led to the emergence of digital photography. 10 November 2009 Inventors Willard Boyle (born Canada in 1924) and George Smith (born in 1930) awarded Nobel Prize. Work in laboratories Bella in 1969 they invented appliance CCD: CCD sensor or CCD (Charge-Coupled Device). In late 60 ies. XX. scientists discovered that the metal-oxide semiconductor (compound-type metal-oxide-semiconductor) has a sensitivity to light. The operating principle of a CCD sensor, consisting of individual MOS light-sensitive elements, based on reading electric potential arising under the influence of light. The shift of the charge runs consecutively from element to element. CCD, consisting of separate light-sensitive elements, has become a new device for fixation optical image. In the former Soviet Union also conducted such developments. In 1975, tests were carried out on domestic television cameras CCD. In 1976, Fairchild launches the first commercial electronic camera MV-101 used on a conveyor belt for quality control. The image was transferred to a mini-computer. Finally in 1981, Sony Corporation announced the establishment of an electronic model of camera Mavica (abbreviation for Magnetic Video Camera) based on the mirror camera with interchangeable lenses. For the...
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Theory And Practice Of Wimax In early 2004, the corporation Intel, already known earlier support for wireless standards for local area networks, began developing the latest standard, which became known as WiMax (Worldwide Interoperability for Microwave Access) and designation of 802.16. WiMax is only necessary to give orders to customers wireless "last mile". To promote and support the latest standards established WiMax Forum, which entered into such industry giants as Nokia, Wi-LAN, Proxim Corporation, Airspan Networks, Alvarion Ltd, Fujitsu Microelectronics America Inc and others. Throughput of channels WiMax not more than 100 Mbit / sec, and is practically at the level of 10-30 Mbit / sec. So WiMax can rival DSL and other "wired" networks in terms of bandwidth. Pros WiMax in the other. Access points 802.16x (now the most "Viable" is the protocol version 802.16-2004) to be placed on high buildings and towers of cellular networks. Operating in the frequency range from 2 to 11 GHz, they enable wireless access to the channel width of up to 70 Mbit / sec. Provided a well-developed infrastructure, WiMax for ordinary Internet users can find the likeness of the world's mobile Internet. When the required level of coverage of access points, as well as the presence of special software consumers will be able to work c high-speed Internet via WiMax-each device, not only at home but on the street and in cafes, office, car, etc. Since some providers have opportunity to place their access point in a coverage area, an Internet user can choose the provider. WiMax devices themselves may be compact computers with special software, and portable audio and video players. This is an ideal. If not ... Almost everything is not easy. The first network based on the fully WiMAX-certified equipment will be launched until early 2009, and in the Russian Federation - not before...

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