By Glenn D. Considine, Peter H. Kulik
First released in 1938, this laptop technology encyclopedia has been released in volumes starting with the 6th version. it really is edited by way of Douglas Considine and Glenn Considine. exclusive of their respective fields of engineering and knowledge administration, also they are the editors of a number of different recognized technical reference books (e.g., Van Nostrand Reinhold Encyclopedia of Chemistry). nearly 250 scientists, engineers, and educators from 8 diversified nations contributed to this re-creation. Van Nostrands covers the six common components of earth and house sciences, lifestyles sciences, strength and environmental technological know-how, fabrics technology, physics and chemistry, and arithmetic and data sciences. the place acceptable, entries have an picking out tag (e.g., Bond [Chemical]). The size of entries varies from one sentence (Aeolian Tones) to eleven pages (Climate). merely the longer entries are signed through their authors and feature appended studying lists. The entries seem to be present. for instance, Jupiter mentions the Ulysses satellite tv for pc flyby of the planet in 1992, and thirteen new readings were further to its bibliography. Telescope has been extended from eight to twelve pages, has numerous new illustrations, and its bibliography is two times as lengthy. This access mentions the 1993 corrections to the Hubble house Telescope. equally, the insurance lower than tv has been improved to incorporate a dialogue of high-definition tv, with point out of advancements as contemporary as 1994. This paintings doesn't comprise any biographies. details on symbols and mathematical conversions is located below devices and criteria. This encyclopedia has an excellent historical past of revision. A comparability with the former version exhibits that approximately two hundred new pages were further to the textual content. There are nearly 7,300 entries, a rise of a number of hundred. during the textual content are many accurately positioned black-and-white photos, line drawings, tables, charts, and diagrams. some time past this paintings has been criticized for the standard of its illustrations. There are numerous circumstances during this re-creation of makes an attempt to enhance the distinction and dimension of images. The index now appears to be like on the finish of every quantity so the volumes can be utilized independently. A sampling decided that there are nearly 12,600 index entries and greater than 5,300 cross-references within the textual content. This twin method of cross-references and indexing is only enough.
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Extra info for Van Nostrand's Scientific Encyclopedia, (3 Vols Set)
Also evident in Fig. 3 is a backscatter peak, which results because γ−ray Count rate 137 Cs b− b− Compton edge 92% 8% 137 480 Ba metastable 662 keV Isomeric transition g 137 Fig. 1. Decay scheme for 662 Energy (keV) Fig. 2. Ideal gamma spectrum of 137 Cs. 0 Ba 137 Cs. Like most natural events, radioactive decay is not a uniform function. Consequently, the term half-life is meant to describe the value that would result if an infinite number of half-life measurements were made and the average calculated.
The Compton Observatory incorporates four instruments. Three of these systems view very wide swaths of sky, and they are pointed by turning the entire spacecraft. As pointed out by researchers N. Gehrels (National Aeronautics and Space Administration, Goddard Space Flight Center) and a team of other experts (See reference listed), the COMPTEL (Imaging Compton Telescope) views a 64-degree wide circular patch of sky. The EGRET (Energetic Gamma Ray Experiment Telescope), which gathers the highest-energy gamma rays, has a slightly smaller (45° ) field.
They are heavily armored with ganoin scales, usually in the form of diamonds or rhomboids. These are flat plates with no interlocking as found in conventional fish scales. They move slowly under normal circumstances, but are capable of very fast movements when striking for food. Much as a crocodile, the gar is a slasher, with rapid sidewise movements in its efforts to tear away at its food. Gars are well known for stealing bait from the fisherman’s hook. They prefer shallow areas with lots of underwater vegetation and thus it is not surprising to find that one of their natural habitats is in the Florida Everglades.