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Word: half-hour (lookup in dictionary) (lookup stats)
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...steel driven by magnetostrietion. This second type of clock produces alternating currents with a constant frequency of 1,000 cycles per second which then pass to a synchronous motor operating the hands. The two clocks are automatically compared by writing the seconds on a moving tape every half-hour...

Author: NO WRITER ATTRIBUTED | Title: Pierce Experiments on Precision Clocks for Laboratory, Observatory Clocks--One Uses Pendulum Enclosed in Vacuum | 6/4/1930 | See Source »

...looked bigger, changed from bees to birds. As they took their close-packed, triad formations, the ocean changed to a duck-marsh, with here wedges of swift teal (the fighters), here a group of bigger black duck (scouts), and there a string of geese (the bombers). In about a half-hour enough planes were put in the sky to panic-strike, if not devastate, any city in the world. New Yorkers who had seen the Navy's great air "raid" (TIME, May 19) or readers of Hearstpapers who two days prior to the review had seen Cartoonist Windsor McKay...

Author: /time Magazine | Title: National Affairs: Smart & Efficient | 6/2/1930 | See Source »

During the Spring the Harvard squad practiced with the Syracase from for the week of vacation. During that time two one half-hour practice games were played in both of them Syracase. HARVARD SYRACUSE Salmon. g. g., Rossman Robinson, pt. pt., Obst Myerson, c.pt. c.pt. Finaz Henderson, ld ld., Brophy Brinckley, 2d. 2d. Aikens Faude, sd. 3d., Reeve Hobbs, c. c. Tarbor Gulick, 3a. 3a. Borton Johnson, 2a. 2a. Brown Glenn, la. la. Reen Murnhy, o.h. o h. Morris Sanders. i h i h Cross team was victorious, winning by scores...

Author: NO WRITER ATTRIBUTED | Title: HARVARD TWELVE MEETS ORANGE INVADERS TODAY | 5/22/1930 | See Source »

Screams of terror were silenced by the concussion. Followed the tinkling crash of an immense chandelier. Casino attendants rushed in to count the dead, succor the wounded. By what amounted to a miracle nobody had been so much as scratched. In a half-hour the demolished table had been carted out, the chandelier swept up, and croupiers were again crying "Mesdames, Messieurs, faites vos jeux...

Author: /time Magazine | Title: MONACO: Roulette Bomb | 5/19/1930 | See Source »

Mantrap. Crowds at a Düsseldorf airport last week cheered while Daredevil Willie Hundertmark stood up in his plane, seized and clung to a rope ladder suspended from a second plane flying above him. Intermittently, for a half-hour, they continued to cheer while, with Daredevil still dangling from the bottom rung, the plane swooped and circled low. Then with horror they saw that the acrobat was tangled in the ladder, was too exhausted to free himself. Rescuers tried to snatch the swinging body but it was tangled too badly. The plane had to land. Daredevil Willie Hundertmark...

Author: /time Magazine | Title: AERONAUTICS: Flights & Flyers: May 12, 1930 | 5/12/1930 | See Source »

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