... 6tri0tidctlparIttpn tpnlvlbodytilvl0tls2tpnrnot0tpnf40tpnindent283 Itpntxtb tb7SStnooverflotfaromantls2trin0tlin936titap0tpara
rsid2512384 Itrtlchtfcs1 taf0 tltrchtfcs0 tbtitf0tfs24tinsrsid3566333 CSItrtlchtfcs1 taf0 tltrchtfcs0 tbtitf0tfs22tinsrsid3566333 mpul electromagneticSItrtlchtfcs1 taf0 tltrchtfcs0 tbtitf0tfs22tultinsrsid3566333 ansamblul cmpurilor electrice i magnetice , care oscileaz i se genereaz reciproc.SItrtlchtfcs1 taf0 tltrchtfcs0 tf37tfs24tinsrsid3566333 tpar Itpntexttpardtplaintltrpar trtlchtfcs1 taf0tafs20 tltrchtfcs0 tf40tfs22tlang1033tlangfe1033tlangfenp1033tinsrsid
3566333 tlochtaf40tdbchtaf0thichtf40 tb7ttabSStpard tltrpartql tfi-283tli936tri0tidctlparIttpn tpnlvlbodytilvl0tls3tpnrnot0tpnf40tpnindent283 Itpntxtb tb7SStnooverflotfaromantls3trin0tlin936titap0tpara
rsid2512384 Itrtlchtfcs1 taf0 tltrchtfcs0 tbtitf0tfs22tinsrsid3566333 Und electromagneticSItrtlchtfcs1 taf0 tltrchtfcs0 tbtitf0tfs22tultinsrsid3566333 un cmp electromagnetic care se propag .SItrtlchtfcs1 taf0 tltrchtfcs0 tf37tfs24tinsrsid3566333 tpar Stpard tltrpartql tfi-2160tli2160tri0tidctlpartnooverflotfaromantrin
0tlin2160titap0 Itrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tinsrsid3566333 tpar SItrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tinsrsid11155182 USItrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tinsrsid3566333 ndele radiaiile electromagnetice pot fi grupate dup fenomenul care st la baza producerii lor. Astfel , radiaiile numite SItrtlchtfcs1 taf0 tltrchtfcs0 titf0tfs24tinsrsid3566333 heriene SItrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tinsrsid3566333 se datoresc oscilaiei electronilor n circuitele oscilante SItrtlchtfcs1 taf0 tltrchtfcs0 titf0tfs24tinsrsid3566333 LCSItrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tinsrsid3566333 sau n circuitele electronice speciale cu caviti rezonante .tpar Prin transformarea energiei interne a oricrui corp n energie electromagnetic rezult SItrtlchtfcs1 taf0 tltrchtfcs0 titf0tfs24tinsrsid3566333 radiaiile termiceSItrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tinsrsid3566333 . Radiaiile electromagnetice , numite SItrtlchtfcs1 taf0 tltrchtfcs0 titf0tfs24tinsrsid3566333 radiaiile de frnare SItrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tinsrsid3566333 , apar la frnarea brusc a electronilor n cmpul nucleului atomic.SItrtlchtfcs1 taf0 tltrchtfcs0 titf0tfs24tinsrsid3566333 Radiaiile sincrotronSItrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tinsrsid3566333 denumirea se datorete faptului c acest fenomen a fost pus n eviden la o instalaie de accelerare a electronilor n cmp magnetic , numit sincrotron i au originea n micarea electronilor ntr-un cmp magnetic .tpar Stpard tltrpartql tli0tri0tidctlpartnooverflotfaromantrin0tlin0titap
0 Itrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tlang1036tlangfe1033tlangnp1036tinsrsid356
6333tcharrsid11155182 Acestor grupe de radiaii le corespund anumite domenii de frecvene.tpar Cea mai uzual mprire a radiaiilor electromagnetice se face ns dup frecvena i lungime sa de und n vid. Aceast mprire cuprinde urmtoarele grupe tpar Stpard tltrpartql tfi-283tli283tri0tidctlpartnooverflotfaromantrin0t
lin283titap0 Itrtlchtfcs1 taf0 tltrchtfcs0 titf0tfs24tlang1036tlangfe1033tlangnp1036tinsrsid3
566333tcharrsid11155182 1.Undele radio. SItrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tlang1036tlangfe1033tlangnp1036tinsrsid356
6333tcharrsid11155182 Domeniul de frecven a acestor unde este cuprins ntre zeci de hertzi pn la un gigahertz 1GHz 109 Hz , adic au lungimea de und cuprins ntre civa km pn la 30 cm . Se utilizeaz n special n transmisiile radio i TV. Dup lungimea de und se submpart n unde lungi 2 Km - 600 m , unde medii 600 - 100 m , unde scurte 100 - 10 m i unde ultrascurte 10 m - 1 cm .tpar SItrtlchtfcs1 taf0 tltrchtfcs0 titf0tfs24tinsrsid3566333 2.Microundele.SItrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tinsrsid3566333 Sunt generate ca i undele radio de instalaii electronice . Lungimea de und este cuprins ntre 30 cm i 1 mm . n mod corespunztor ... Download