Show wave vave speed difference gives strange effects sound travels through tho the air tit nt the rate nite of one mile in five seconds ether wales time hae a n mil 14 linn n linies limes geenter RI gi enter tills this difference some dome strange effects big pon londona Lon dons famous clock can hp be heard to strike four miles allea from westminster minster owing to the die dlf derence between lip Heen the sliced of radio mid and air waves in anany parts of london it rany may ho he heard to strike 22 dinies when the lie 11 signal Is licin broadcast from daventry laventry Da ventry through a loud land and through t tile I 1 alp abere Is an interval of four and one half seconds between each stroke of rifi big ben at one nille the first two strokes hy by radio would he heard before the first by sound waives and after the last lap ht bv two would arrive through tile the air at four miles tire five would be heard hy by radio before the first by bv sound wives waives ond and the last by kridlo would he be followed by five carried by air waves |