1. Trang chủ
  2. » Khoa Học Tự Nhiên

Feynman physics lectures v3

367 75 0

Đang tải... (xem toàn văn)

Tài liệu hạn chế xem trước, để xem đầy đủ mời bạn chọn Tải xuống

THÔNG TIN TÀI LIỆU

Thông tin cơ bản

Định dạng
Số trang 367
Dung lượng 28,64 MB

Nội dung

³7KH0RWLRQRI3ODQHWV$URXQGWKH6XQ´ FHQWHURIWKH6XQ,QRWKHUZRUGV,UHSLFWXUHWKHRUELWZLWKWKHVXFFHVVLRQ RI SRLQWV-  / 0 1 ZKLFK FRUUHVSRQGQRWWRHTXDOLQVWDQWVOLNHWKH\ GLGLQ WKHGLDJUDPEHIRUHEXWUDWKHU >WR@ HTXDO DQJOHV RI LQFOLQDWLRQ IURP WKHRULJLQDOSRVLWLRQ7RPDNHWKLVDOLWWOHELWVLPSOHUDOWKRXJKLWLVQRWDW DOOHVVHQWLDO,KDYHVXSSRVHGWKDWWKHRULJLQDOPRWLRQZDVSHUSHQGLFXODUWR WKH 6XQ DW WKH ILUVW SRLQW²EXW WKDW¶V QRW HVVHQWLDO LW MXVW PDNHV WKH GLDJUDPVFOHDQHU  'LDJUDPIURP)H\QPDQ¶VOHFWXUHQRWHV  1RZ ZH NQRZ IURP WKH SURSRVLWLRQ SUHYLRXVO\ WKDW HTXDO >DUHDV@ RFFXS\ HTXDO WLPHV WR EH VZHSW WKURXJK 1RZOLVWHQ,ZRXOGSRLQWRXWWR \RX WKDWHTXDODQJOHVZKLFK LVZKDW ,¶PDLPLQJIRUPHDQVWKDWDUHDV DUH QRW HTXDO QR EXW WKH\ DUH SURSRUWLRQDO WR WKH VTXDUH RI WKH GLVWDQFH IURP WKH 6XQ IRU LI , KDYH D WULDQJOH RI D JLYHQ DQJOH LW LV FOHDU WKDW LI , PDNHWZRRIWKHPWKDWWKH\DUHVLPLODUDQGWKHSURSRUWLRQDODUHDRIVLPLODU WULDQJOHV LV SURSRUWLRQDO WR WKH VTXDUH RI WKHLU GLPHQVLRQV (TXDO DQJOHV WKHUHIRUH PHDQV²VLQFH DUHDV DUH SURSRUWLRQDO WR WLPH²HTXDO DQJOHV WKHUHIRUH PHDQV WKDW WKH WLPHV WR EH VZHSW WKURXJK WKHVH HTXDODQJOHV DUH SURSRUWLRQDOWRWKHVTXDUHRIWKHGLVWDQFH,QRWKHUZRUGVWKHVHSRLQWV²- /DQGVRRQ²GRQRWUHSUHVHQWSLFWXUHVRIWKHRUELWDWHTXDOWLPHVQR   7KLVLVWKHSRLQWH[SODLQHGLQ WKHIRRWQRWH WR&KDSWHUSDJH )(WKHQXFOHXV@DOPRVW KHDGRQ 6R WKRVH ZKLFK FRPH YHU\ FORVH WR WKH QXFOHXV GR QRW VHHP WR FRPH RXW WKH ZD\ WKH\ RXJKW WR DQG WKH UHDVRQ LV WKDW WKH QXFOHXV KDV D VL]H    ,¶YH JRW WKH VWRU\ EDFNZDUGV ,I WKH QXFOHXV KDG D ELJ VL]H WKHQ WKRVH ZKLFK ZHUH VXSSRVHGWRFRPHRXWDWODUJHDQJOHVZRXOGQ¶WJHWWKHLU IXOOIRUFHEHFDXVHWKH\ZRXOGJHWLQVLGHWKHFKDUJHGLVWULEXWLRQDQGZRXOG EHGHIOHFWHGOHVV,JRWPL[HGXS([FXVHPH,VWDUWDJDLQ 5XWKHUIRUGGHGXFHGKRZLWVKRXOGJRLIDOOWKHIRUFHVZHUHFRQFHQWUDWHG DW WKH FHQWHU ,Q KLV GD\ LW ZDV VXSSRVHG WKDW WKH FKDUJH LQ DQ DWRP ZDV GLVWULEXWHGXQLIRUPO\RYHUWKHDWRPDQGLQRUGHUWRGLVFRYHUWKLV )(ZKLFK@XVHGWREHFDOOHGWKHRULJLQRIWKHYHORFLW\VSDFH OLHV RQ WKH RXWVLGH RI WKH FLUFOH $QG WKH VXFFHVVLRQ RI VPDOO YHORFLW\ FKDQJHVOLHRQWKHFLUFOHDQGWKHVXFFHVVLRQRIYHORFLWLHVWKHQLQWKHRUELW DUH WKHVH OLQHV XQWLO D YHU\ LQWHUHVWLQJ SRLQW FRPHV XQWLO ZH JHW WR WKLV WDQJHQW $WWKLVWDQJHQWSRLQWWRWKHFXUYH²ZKDWGRHVLWPHDQ",WPHDQVWKDWDOO WKHFKDQJHVLQYHORFLW\DUHLQWKHGLUHFWLRQRIWKHYHORFLW\%XWWKHFKDQJHV LQ WKH YHORFLW\ DUH LQ WKH GLUHFWLRQ RI WKH 6XQ DQG WKDW PHDQV WKDW WKLV YHORFLW\LQWKLVSDUWRIWKHGLDJUDPLVLQWKHGLUHFWLRQRIWKH6XQEHFDXVH LW LV LQ WKH GLUHFWLRQ RI WKH FKDQJHV 7KDW LV WR VD\ WKLV SRLQW KHUH DV ZH DSSURDFK WKLV SRLQW KHUH²ZKLFK , FRXOG FDOO [ VD\² FRUUHVSRQGV WR FRPLQJIURPLQILQLW\WRZDUGWKH6XQDORQJDOLQHKHUH7KDWLVYHU\IDURXW ZHDUHGLUHFWHGWRZDUGWKH6XQYHU\FORVHO\ QRWWKH6XQEXWWKHQXFOHXV  DQGWKHQDVLWFRPHVDURXQGKHUH²WKLVGLDJUDPVKRXOGEHWKHRWKHUZD\ ³7KH0RWLRQRI3ODQHWV$URXQGWKH6XQ´ WKHRWKHUZD\WKHDUURZVVKRXOGEHKHUH,JRWWKHFKDQJHVWKHZURQJZD\ LQWLPH²FRPHVDURXQGKHUHDQGJRHVRXWWKLVZD\DQGJRLQJRXWWKDWZD\ FRUUHVSRQGVWRJRLQJZLWKWKHYHORFLW\RIILQWKLVGLUHFWLRQ 1RZLIZHGUDZWKHQWKHRUELWPRUHFDUHIXOO\LWZLOOORRNYHU\PXFK OLNHWKLV,WJRHVDURXQGOLNHWKLV,I,FDOOWKLVSRLQWKHUH9f WKHQWKH YHORFLW\WKDWWKHSDUWLFOHKDVDWWKHEHJLQQLQJLV9f ,IRQWKHVDPHVFDOH ,FDOOWKHUDGLXVRIWKLVFLUFOH9²WKHYHORFLW\FRUUHVSRQGLQJWRWKHUDGLXV RIWKHFLUFOH²,¶PJRLQJWRPDNHXSVRPHHTXDWLRQ,¶PQRWJRLQJWRGRLW )(

Ngày đăng: 14/05/2019, 16:49

TÀI LIỆU CÙNG NGƯỜI DÙNG

  • Đang cập nhật ...

TÀI LIỆU LIÊN QUAN