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a former unit of absorbed ionizing radiation dose equivalent to an energy absorption per unit mass of 0.01 joule per kilogram of irradiated material. 1 rad is equivalent to 0.01 gray



a subsidiary unit of absorbed radiation dose. It is applied to any kind of ionizing radiation and corresponds to a radiant energy of 100 ergs absorbed by 1 g of a substance: 1 rad = 2.388 × 10–6 = 0.01 joule per kg.


A special unit of absorbed dose, equal to energy absorption of 100 ergs per gram (0.01 joule per kilogram); equal to 0.01 gray.


A heating unit usually exposed to view within the room or space to be heated; transfers heat by radiation to objects within visible range, and by conduction to the surrounding air, which in turn is circulated by natural convection; usually fed by steam or hot water.




(1) (Rapid Application Development) Developing systems incrementally and delivering working pieces every three to four months, rather than waiting until the entire project is programmed before implementing it. Over the years, many information projects have failed, because, by the time the implementation took place, the business had changed.

RAD employs a variety of automated design and development tools, including CASE, 4GLs, visual programming and GUI builders, all of which help create prototypes and running applications faster than by coding program statements a line at a time. The term was coined years ago by industry guru James Martin and focuses on personnel management and user involvement as much as on technology. Joint application development is another RAD concept (see JAD).

The term is also used in a more general way to refer to an environment that produces applications quickly and efficiently.

(2) (RADiation dose) An earlier unit of measurement of absorbed radiation. Defined in the centimeter-gram-second (CGS) system as equal to 100 ergs of energy absorbed by one gram of matter, the rad was superseded by the "gray," an SI unit where 100 rad are equal to one gray. See radiation hardened and gray.
References in periodicals archive ?
El capitulo dos--El personaje: Rades como auctoritas historica--constituye, como he apuntado al comienzo, otra monografia por si misma.
The Interior Ministry said the main suspect confessed to going to Rades Meliane with the other two suspects.
The US Monastir with only one trophy in their list (2000), last Wednesday, deprived the Rades club from their 14th title of champions.
US Monastir had won Tunisia's Championship in early May after three wins to 1 over ES Rades at the four-game finals.
US Monastir had defeated Rades (88-78) at the previous day, while defending champions ES Rades won the first match (75-64).
The final results of last year's municipal elections in Rades saw the independent list "Vive Rades" win 11 seats out of a total of 30.
Le DG de l'OMMP a, par ailleurs, souligne l'importance des deux quais 8 et 9, tant attendus par les operateurs economiques, dans le renforcement de l'efficacite commerciale du port de Rades. Il a fait savoir que les deux quais en question permettront d'augmenter le rendement du port de Rades de 7/8 conteneurs/heure actuellement a 50 conteneurs/heure, a travers la modernisation des equipements.
09/03/2019 18:09, TUNIS/Tunisia (TAP) -- Tunisia's Etoile Sportif de Rades secured their qualification for the quarter-finals of the FIBA AfroLeague after defeating Nigeria's Civil Defenders (96-80) at a first qualifying round group B day-2 game played on Saturday in Cotonou, Benin.
L'Etoile Sportive de Rades a battu la formation congolaise de BC Terreur 69 a 52, dimanche, pour le compte de la 3e et derniere journee du premier tour eliminatoire de Fiba AfroLeague de basket-ball (Groupe B), organise a Cotonou (Benin).
In the other two matches of the day, ES Rades secured a large win over US Monastir 80-48 and JS Kairouan defeated S.
Nabeulien - ES Sahel 70-67 Monastir: US Monastir - GS Grombalia 84-66 Kairouan: JS Kairouan - ES Rades 71-62 Standings PTS G 1) ES Rades 17 9 2) US Monastir 15 9 3) JS Kairouan 14 9 4) ES Sahel 12 9 -) DS Grombalia 12 9 6) S.