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In the 1970s, 34-watt energy-saving F40T12 fluorescent lamps were intoroduced in the United States. In the 1980s, T8 32-watt lamps were introduced, [8] but unlike the T8 tubes introduced in Europe, these T8s are not retrofits and require new matching ballasts to drive them. These ballasts were originally magnetic, but most today are electronic.
The FT, introduced in 1939 with the new 1,350 hp (1.01 MW) 567 engine and Blomberg B trucks, was a successful design, and remained in production during WWII.. The F3 (1946) had a different roof arrangement that included the replacement of the FT's boxy dynamic brake structure with two under-roof grids, two exhaust stacks instead of four, and four cooling fans grouped together instead of ...
VX-3 was the first unit to qualify for carrier operations but several aircraft were lost in accidents, several of them fatal to their pilots. The first fleet squadron to fly the Crusader was VF-32 at NAS Cecil Field, Florida, in 1957, which deployed to the Mediterranean late that year on Saratoga. VF-32 renamed the squadron the "Swordsmen" in ...
The F7 was the fourth model in GM-EMD's successful line of F-unit locomotives, and by far the best-selling cab unit of all time. In fact, more F7s were built than all other F-units combined. The F7 succeeded the F3 model in GM-EMD's F-unit series, and was replaced in turn by the F9.
The first vector (S 0) is the mean of all the SPD samples, which is the best reconstituted SPD that can be formed with only a fixed vector. The second vector (S 1 ) corresponds to yellow–blue variation (along the locus), accounting for changes in the correlated color temperature due to proportion of indirect to direct sunlight. [ 9 ]
These months depend on when the first paycheck of the year is. In a 52-week year, employees who get paid biweekly usually receive two paychecks per month − 26 paychecks in total. Typically ...
The Welsh-born Roberts, who served as Houston’s bodyguard from 1988 to 1995, spoke to the outlet ahead of the publication of his memoir Protecting Whitney, which is set to be released in January ...
First layer (cake) 1. Bake Swiss chocolate cake (following box instructions) and spread thin in a 10-inch pan. Second layer (chocolate mousse) 2. Carefully melt semi-sweet chocolate chips and ...