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Common developmental patterns seen during tropical cyclone development, and their Dvorak-assigned intensities. The Dvorak technique (developed between 1969 and 1984 by Vernon Dvorak) is a widely used system to estimate tropical cyclone intensity (which includes tropical depression, tropical storm, and hurricane/typhoon/intense tropical cyclone intensities) based solely on visible and infrared ...
A World Area Forecast Centre ( WAFC) is a meteorological centre that provides real-time meteorological information broadcasts for aviation purposes. These broadcasts are supervised by International Civil Aviation Organization (ICAO) in order to fulfill requirements of the ICAO Annex 3 covering meteorological information which is necessary for ...
Comparison of temperature scales. * Normal human body temperature is 36.8 °C ±0.7 °C, or 98.2 °F ±1.3 °F. The commonly given value 98.6 °F is simply the exact conversion of the nineteenth-century German standard of 37 °C. Since it does not list an acceptable range, it could therefore be said to have excess (invalid) precision.
Para table tennis. Table tennis at the 1992 Summer Paralympics. Para table tennis is a parasports which follows the rules set by the International Table Tennis Federation (ITTF). The usual table tennis rules are in effect with slight modifications for wheelchair athletes. Athletes from disability groups can take part.
Table tennis (also known as ping-pong or whiff-whaff) is a racket sport derived from tennis but distinguished by its playing surface being atop a stationary table, rather than the court on which players stand. Either individually or in teams of two, players take alternating turns returning a light, hollow ball over the table's net onto the ...
In mid-May, a couple of Colorado kids had the moment of a lifetime when a herd of elk wandered next to their soccer game. One of the elk--a young male-- even stopped to observe, so the kids took a ...
Para-athletics classification at the Paralympic Games is the basis for determining who can compete in specific athletic sports, and within which class. It is used for the purposes of establishing fair competition. The general rules for para-athletics are based on rules intended for able-bodied competitors. [1]
Besides Deng, Zhang and Ma Long, no other female or male player has successfully defended their singles title, while in the doubles, back-to-back victories were achieved by Deng Yaping and Qiao Hong (1992, 1996), and Wang Nan (with Li Ju in 2000, and Zhang Yining in 2004). China has been the most successful nation in Olympic table tennis ...