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The UpToDate system is an evidence-based clinical resource. It includes a collection of medical and patient information, access to Lexicomp drug monographs and drug-to-drug interactions, and a number of medical calculators. UpToDate is written by over 7,100 physician authors, editors, and peer reviewers. It is available both via the Internet ...
A drug or procedure usually used for a specific effect may be used specifically because of a beneficial side-effect; this is termed "off-label use" until such use is approved. [1] For instance, X-rays have long been used as an imaging technique ; the discovery of their oncolytic capability led to their use in radiotherapy for ablation of ...
Digital Photography Review, also known as DPReview, is a website about digital cameras and digital photography, established in November 1998. [4] The website provides comprehensive reviews of digital cameras, [4] lenses and accessories, buying guides, [4] user reviews, [4] and forums for individual cameras, as well as general photography forums.
Consumer Reports is a United States-based non-profit organization which conducts product testing and product research to collect information to share with consumers so that they can make more informed purchase decisions in any marketplace.
However, even if both techniques have inherent noise, it is widely appreciated that for color, digital photography has much less noise/grain than film at equivalent sensitivity, leading to an edge in image quality. [10] For black-and-white photography, grain takes a more positive role in image quality, and such comparisons are less valid.
Nearly all digital SLRs take pictures in a 3:2 ratio, as most can use lenses designed for 35 mm film. Some photo labs print photos on 4:3 ratio paper, as well as the existing 3:2. In 2005, Panasonic launched the first consumer camera with a native aspect ratio of 16:9, matching HDTV. This is similar to a 7:4 aspect ratio, which was a common ...
On Photography won the National Book Critics Circle Award for Criticism for 1977 and was selected among the top 20 books of 1977 by the editors of The New York Times Book Review. In 1977, William H. Gass , writing in The New York Times , said the book "shall surely stand near the beginning of all our thoughts upon the subject" of photography.
An afterimage in general is an optical illusion that refers to an image continuing to appear after exposure to the original image has ceased. Prolonged viewing of the colored patch induces an afterimage of the complementary color (for example, yellow color induces a bluish afterimage).