Sentences with phrase «spread over a large distance»

Not exact matches

Although they last mere milliseconds at any single frequency, their great distances from Earth — and large quantities of intervening plasma — delay their arrival at lower frequencies, spreading the signal out over a second or more and yielding a distinctive downward - swooping «whistle» across the typical radio receiver band.

Strong signals of recent selection were observed in insecticide - resistance genes, with several sweeps spreading over large geographical distances and between species.

Greater variation with distance from the equator Energy spread out over a larger area Radiation has to penetrate a greater depth of atmosphere.