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Sr |
Also found in: Dictionary/thesaurus, Medical, Financial, Wikipedia, Hutchinson | 0.40 sec. |
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Sr, symbol for the element strontium strontium (strŏn`shēəm) [from Strontian, a Scottish town], a metallic chemical element; symbol Sr; at. no. 38; at. wt. ..... Click the link for more information. .
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The number of photoelectrons per steradian per unit light flux, [dN. The specified frequency was chosen to be at the peak of the V([lambda]) distribution (555 nm) and the factor 1/683 watts per steradian was chosen based upon the best estimate at that time of the freezing point of platinum. |
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