Ответы (1115944), страница 8

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IeZklbgdb \ ©q_l\_jlv\heguª kha^Zxl jZaghklv oh^Z ∆ =  m +  λ0 b ij_h[jZamxl4iehkdh iheyjbah\Zgguc k\_l \ weebilbq_kdb iheyjbah\Zgguc hkb dhlhjh]h gZijZ\e_gu\^hevhilbq_kdhchkbbi_ji_g^bdmeyjghdg_cIjbihiZ^ZgbbgZlZdmxieZklbgdmweebilbq_kdbiheyjbah\Zggh]hk\_lZlZdqlhh^gZbahk_ciheyjbaZpbbgZijZ\e_gZ\^hevhilbq_kdhchkblh_klvihkmlb ^\mo emq_c iehkdh iheyjbah\Zgguo \h \aZbfgh i_ji_g^bdmeyjguo iehkdhklyo ihemqZ_lky iehkdh iheyjbah\Zgguc k\_l Ijb iZ^_gbb gZ lZdmx `_ ieZklbgdm_kl_kl\_ggh]hk\_lZdZ`^ucbakhklZ\eyxsbowlhlk\_lemq_ciheyjbam_lkyweebilbq_kdb<j_amevlZl_iheyjbaZpbyemqZ\p_ehfihij_`g_fmhlkmlkl\m_lghdhgpu\k_o\_dlhjh\?kh\_jrZxlweebilbq_kdb_dhe_[Zgby?keb gZ djbklZeebq_kdmx ieZklbgdm iZ^Z_l g_fhghojhfZlbq_kdbc k\_l kh^_j`Zsbc\heguk^ebgZfb\\Zdmmf_hl λ0^hλ0 + ∆λ0lh^eyweebilbq_kdhciheyjbaZpbblj_[mλ2lλ02_lkydh]_j_glghklv ∆ < lk = 0 ⇒ d < k =.∆λ0∆n ∆n ⋅ ∆λ>ey ZgZebaZ iheyjbaZpbb k\_lZ bkihevamxl iheyjhb^u kf b djbklZeebq_kdb_ieZklbgdb \ ©q_l\_jlv\heguª Iehkdh iheyjbah\Zgguc k\_l ijb hij_^_ezgghc hjb_glZpbbg_ijhoh^blq_j_ah^bgiheyjhb^aZlhqZklbqghiehkdhiheyjbah\Zgguck\_ldZdbweebilbq_kdb iheyjbah\Zgguc \k_]^Z ijhoh^bl q_j_a iheyjhb^ k h[jZah\Zgb_f fZdkbfmfh\ b36fbgbfmfh\bgl_gkb\ghklbijbih\hjhl_>eyhij_^_e_gbylZdbo\hegbkihevamxlieZklbgdb\ ©q_l\_jlv\heguª hjb_glbjh\Zggu_ \^hev hkbiheyjhb^Z ^ey dhlhjhcihemq_g fZdkbfmfbebfbgbfmfbgl_gkb\ghklbkh^gbfiheyjhb^hfihke_ijhoh`^_gbylZdhcieZklbgdbweebilbq_kdbiheyjbah\Zgguck\_lklZgh\blkyiehkdhiheyjbah\ZggufZqZklbqghiehkdhiheyjbah\Zgguc±weebilbq_kdbiheyjbah\Zgguf<i_j\hfkemqZ_k\_lg_\k_]^Zijhoh^blq_j_a\lhjhciheyjhb^\h\lhjhf±ijhoh^bl\k_]^Z:gZeh]bqghjZaebqZxlpbjdmeyjghiheyjbah\Zgguck\_lb_kl_kl\_ggucBgl_jn_j_gpbyiheyjbah\Zgguoemq_cMkeh\bygZ[ex^_gbybgl_jn_j_gpbbP\_lZdjbklZeebq_kdboieZklbghd Dhghkdhiby Bkdmkkl\_ggZy hilbq_kdZy Zgbahljhiby nhlhmijm]hklv we_dljh b fZ]gblhhilbq_kdb_ wnn_dlu Ihdd_evkZ D_jjZ DhllhgZFmlhgZ1) Bgl_jn_j_gpbyiheyjbah\Zgguoemq_c:Imklv iehkdh iheyjbah\Zgguc k\_l iZ^Z_l gZ ]jZgv h^ghhkgh]h hilbq_kdb Zgbahljhigh]hdjbklZeeZ\uj_aZggmx\^hevhilbq_kdhchkbLh]^ZgZ\uoh^_ihemqbfh[udgh\_ggucb g_h[udgh\_gguc emqb iheyjbah\Zggu_ \h \aZbfgh i_ji_g^bdmeyjguo iehkdhklyo kfWlbemqbbf_xlhij_^_ezggmxjZaghklvoh^Zghg_bgl_jn_jbjmxlwg_j]byg_i_j_jZkij_^_ey_lky \ ijhkljZgkl\_ _keb E 2 = E y2 + Ez2 ⇒ I 0 = E y20 cos 2 ω t + Ez20 cos 2 ω t ==E y20 + Ez20, lh I = I o + I e = E y20 cos 2 ω t + Ez20 cos 2 (ω t + ∆ϕ ) =E y20 + Ez20= I 0 ).

>ey gZ[ex^_22gbybgl_jn_j_gpbbiheyjbah\Zgguoemq_cg_h[oh^bfhijhimklblvboq_j_aiheyjhb^ jZkiheh`_ggucgZdehgghd]eZ\ghchilbq_kdhciehkdhklbWlhliheyjhb^\u^_eblkhklZ\eyxsb_h[udgh\_ggh]hbg_h[udgh\_ggh]hemq_ciheyjbah\Zggu_\h^ghcblhc`_iehkdhklblh]^Z oZjZdl_j bgl_jn_j_gpbhgghc dZjlbgu hij_^_eblky jZaghklvx oh^Z wlbo emq_c∆ = ne − no d .<u^_eyxl^\Zbgl_jn_j_gpbhgguownn_dlZ^eyiheyjbah\Zgguoemq_c1.

P\_lZlhgdboiezghd_kebgZdjbklZeebq_kdmxieZklbgdmiZ^Z_l imqhd iehkdh iheyjbah\Zggh]h[_eh]hk\_lZlh^eyjZaguo^ebg\hegnhjfubhjb_glZpbbweebikh\iheyjbaZpbbhdZ`mlkyjZaebqguihwlhfmb^heyemq_cjZaguop\_lh\ihke_ijhoh`^_gbyiheyjhb^ZjZaebqgZ<j_amevlZl_ijbgZ[ex^_gbbdjbklZeebq_kdhcieZklbgdbq_j_aiheyjhb^hgZ[m^_l ij_bfms_kl\_ggh hdjZr_gZ \ dZdhceb[h p\_l h[mkeh\e_gghc \heghc k ^ebghc λ).Ijbih\hjhl_iheyjhb^ZgZm]he π/2wlhlp\_lbaf_gblkygZ^hihegbl_evgucihkdhevdmiheyjhb^ihqlbg_ [m^_l ijhimkdZlv \hegu ^ebgu λ ?kebieZklbgdZ bf__l i_j_f_ggmx lhesbgmlhh[eZklbjZaghclhesbguhdZ`mlkyhdjZr_ggufb\jZagu_p\_lZ±\hagbdZxlihehkujZ\ghclhesbgu.2.

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