jalay ki gulail say khud ko fire krnay wali mackriyan
jalay ki gulail say khud ko fire krnay wali mackriyan , pairo ke janglaat mein payi jaany wali chothee si’ ‘ guleeli macryion ‘ ‘ ( slung short spiders ) ke barey mein inkishaaf hwa hai ke woh shikaar karne ke liye waqai mein –apne jaaley ko ghulail ki terhan istemaal karti hain, khud ko intahi taiz raftari se’ fire’ karti hain aur urrty hue shikaar ko pakar layte hain .
yahi nahi balkay’ fire’ hotay douran yeh makrian 1, 300 meter fi murabba second ki sharah se apni raftaar barhati hain, jo shikaar par hamla aawar honay walay taiz raftaar cheetay ke muqablay mein bhi 100 gina ziyada sharah hai .
doranِ parwaaz yeh –apne shikaar ki taraf 4 meter fi second ki raftaar se barhti hain aur un ke jism ko mamool ki qotِ saqal ( g force ) ke muqablay mein taqreeban 130 gina ziyada saqli qowat ( 130g ) ka saamna karna parta hai. aik laraka tayyaray ka pilot bhi ziyada se ziyada 10g jitni qowat hi bardasht kar sakta hai .
un ka talluq makriyon ke’ ‘ ‘ ( theridiosomatidae ) khandan se hai jis mein shaamil makriyon ki jasamat 1. 5? mili meter se le kar 3. 0 mili meter taq hoti hai .
apni chootte jasamat ke bawajood, yeh makrian –apne shikaar par bohat taizi se parwaaz karte hue hamla aawar honay ke liye mashhoor hain. lekin yeh sab kuch woh kaisay karti hain? is barey mein mahireen ke paas sirf mfrozat they lekin haqeeqat se koi waaqif nahi tha .
yeh jan-nay ke liye jeur jiya insti tute of tecnology ( jewerjiya take ) ke madrasi nazaad Amrici sainda dr Saad bhamla ne –apne sathiyon ke hamrah pairo ke janglaat ka rukh kya. yeh team aisay taiz raftaar aur hassas cameron se lais thi jo raat ki tareqi mein bhi dekhnay ke qabil they .
un videos se yeh baat maloom hui ke qisam ki makrian shikaar karne ke liye jala banati hain lekin jab inhen kisi machar ya makri ka shikaar karna hota hai to woh jaaley ke bilkul darmain mein pahonch jati hain aur jaaley ke peechay mojood kisi shaakh ya pathar par –apne jaal ka taar phenkti hain theek isi terhan jaisay’ ‘ spider mean’ ‘ karta hai .
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