Science: Errors in the Air

The Air Force radar operator at Goose Bay, Labrador, last week was watching bright blips drifting across his radarscope as he traced the track of airplanes approaching from Europe. The planes seemed to be scattered all over the sky, sometimes as far as 150 miles off course. Only when the planes came within reach of land radio guidance did the blips slant crabwise back to their proper courses.

The dance of the drifting blips was impressive proof that the problem of long-range aircraft navigation has yet to be licked. The most spectacular new guidance systems still strain to keep up with...

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