radaar

radaar tantr ke vibhinn bhaag

radaar (Radar) vastuon ka pata lagaane waali ek pranaali hai jo sookshmatarangon ka upayog karti hai. iski sahaayata se gatimaan vastuon jaise vaayuyaan, jalayaan, motaragaadiyon aadi ki doori (paraas), oonchaai, disha, chaal aadi ka door se hi pata chal jaata hai. iske alaava mausam mein teji se aa rahe parivrtanon (weather formations) ka bhi pata chal jaata hai. 'radaar' (RADAR) shabd moolat: ek sankshipt roop hai jiska prayog America ki nausena ne 1940 mein 'radio ditekshan aind reinjing' (radio detection and ranging) ke liye prayog kiya tha. baad mein yeh sankshipt roop itna prachalit ho gaya ki angreji shabdaavali mein aa gaya aur ab iske liye bade aksharon (kaipitl) ka istemaal naheen kiya jaata.

baahari kadiyaaain