NCERT Textbook - विधुत चुम्बकीय तरंगे | NCERT Textbooks in Hindi (Class 6 to Class 12) - UPSC PDF Download

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vè;k; 8
oS|qrpqacdh;
rjaxsa
8.1 Hkwfedk
vè;k; 4 esa geus lh[kk gS fd fo|qr èkkjk paqcdh; {ks=k mRiUu djrh gS rFkk nks èkkjkokgh rkj
ijLij ,d&nwljs ij paqcdh; cy vkjksfir djrs gSaA blosQ vfrfjDr] vè;k; 6 esa ge ;g ns[k
pqosQ gSa fd le; osQ lkFk ifjorZu'khy pqacdh; {ks=k fo|qr {ks=k mRiUu djrk gSA ijarq] D;k bldk
foykse Hkh lR; gS\ D;k le; osQ lkFk ifjo£rr gksrk gqvk fo|qr {ks=k pqacdh; {ks=k dks mRiUu
djrk gS\ tsEl DykoZQ eSDlosy (1831-1879) us ;g roZQ izLrqr fd;k fd okLro esa ,slk
gh gksrk gSA u osQoy fo|qr èkkjk oju le; osQ lkFk ifjorZu'khy fo|qr {ks=k Hkh paqcdh; {ks=k
mRiUu djrk gSA le; osQ lkFk ifjorZu'khy èkkjk ls tqM+s laèkkfj=k osQ ckgj fdlh ¯cnq ij
paqcdh; {ks=k Kkr djus osQ fy, ,sfEi;j dk fu;e yxkrs le;] eSDlosy dk è;ku bl fu;e
lacaèkh ,d vlaxfr dh vksj x;kA bl vlaxfr dks nwj djus osQ fy, mUgksaus ,d vfrfjDr èkkjk
osQ vfLrRo dk lq>ko fn;k ftldks mUgksaus foLFkkiu èkkjk uke fn;kA
mUgksaus fo|qr o paqcdh; {ks=kksa rFkk muosQ lzksrksaµvkos'k ,oa èkkjk&?kuRo dks lfEefyr dj]
lehdj.kksa dk ,d leqPp; lw=kc¼ fd;kA bu lehdj.kksa dks eSDlosy lehdj.k dgrs gSaA yksjsat
dk cy lw=k (vè;k; 4) vkSj feyk ysa rks ;s lehdj.k fo|qr&paqcdRp osQ lHkh vkèkkjHkwr
fu;eksa dks xf.krh; :i esa O;Dr djrs gSaA
eSDlosy osQ lehdj.kksa ls mHkjus okyh lcls egRoiw.kZ izkxqfDr oS|qrpaqcdh; rjaxksa dk
vfLrRo gksuk gS tks varfj{k esa lapfjr le; osQ lkFk cnyrs (;qfXer) fo|qrh; ,oa paqcdh;
{ks=k gSaA eSDlosy osQ lehdj.kksa osQ vuqlkj] bu rjaxksa dh pky] izdk'kh; ekiu }kjk izkIr izdk'k