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About ball point interesting
kya ap jante hen ke sb se pehle ball point ka khayal john laud ko 1880s me aya wo aik pencil bnana chahte the jo leather per likh ske wo aik steel ka khoka tha or wo leather par likh skta tha lekin aprov hone se pehle aik problem aya ke us ki ink sokh jati thi or phel jati the is lie reject ho gae.
phr budapest journalist laszlo jozsef biro ne socha ke jo ink hm news paper ke lie use krte hen wo ballpoint me use kren to shaid problem hal ho jae.
Jb unho ne ye tarika try kia to unho ne steel reserver lgaya ball point me to natija tan ink thick ho gae or jaldi sokne lgi to uncho ne 1930 me apna mansoba inspire kia.
Biro pen or ball point aik he chez ka itamal krti thi choti si ball brass,steel ya tungstin carbide.ye ball cap ka kam b deti ti ke ink soke na or rotate control ka kam deti thi.
Ye first of all air force istamal kia krti thi.phr ise modern bnaya gya or maukhtalif colours me tabdeel kya gya or istamal kya gya.
Khuda hafiz.
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