大物實(shí)驗(yàn)二級(jí)棱鏡攝譜讀譜

S度；L1S1L2和L3F.片進(jìn)量，通過計(jì)算即可求出未知譜線的波長(zhǎng).我們利用插值法，將λ1與l1-l2近似看成x1

其中a

l,al

ax由此算出2

LL1的光軸上。3攝譜用已在暗箱中裝好底片的底片盒換下毛玻璃時(shí)打開小遮板后關(guān)閉小遮板4、對(duì)光譜片進(jìn)行分析：在靠近待測(cè)波長(zhǎng)λx的兩側(cè)，選兩條波長(zhǎng)λ1和λ2為已知的譜線，用讀數(shù)顯微鏡測(cè)出三條譜線在底板上對(duì)應(yīng)位置的數(shù)值和，依據(jù)線性關(guān)系，求出λx值。Kθ晰L2L2兩端鐵 前：1 后24736.780123456兩端鐵 前：1 后24030.492123456

a

l,

l

ax

123456a66平均值：ax 6

6

(axiax(axiax n6(0.1550.160)2(0.1580.160)2(0.1640.160)2(0.1620.160)26xx6AUAx6

66

B0.001 (tpUAx(tpUAx)(k 22 (1.110.00128)2a ax

0.00146mm,P(2.570.00128)(2.570.00128)2(1.96(tpU(tpUAx)(k 22 ax

0.00335mm,P66平均值：a 6

6

().().().().(i(ia) n6AU

66

66

0.0012

B0.001 2tkUUU

)2

0.,a 2tkUUU

)(()2.))(()2.)22a()

4707.281 1

由不確定度傳遞得(Ua)2(Uaxa(Ua)2(Uaxax(Ua)2(Uaxa(Ua)2(Uaxax

(0.00921)2((0.00921)2((0.0213)2(x0.0161(4714.1114707.281)x0.0373(4714.1114707.281)

x4714.11x4714.11

根據(jù)all,al

ax

123456a66平均值：ax 6

0.2050.2010.2050.1990.1966

(axiax(axiax n6(0.2050.202)2(0.2010.202)2(0.2050.202)2(0.1990.202)2666

6 6

B0.001 P=0.68(tpUAx(tpUAx)(k 22 (1.110.00163)2a ax

0.00184mm,PP=0.95(tpUAx(tpUAx)(k 22 (2.570.00163)2(1.96a ax

0.00424mm,P66平均值：a 6

6

(i(ia) n6AUAa

().().().6

66

B0.001 P=0.68(tpUAx)(tpUAx) 22(1.110.00335)2P=0.95(tpUAa(tpUAa)(k 22

0.00373mm,P(2.570.00163)2(1.96(2.570.00163)2(1.96x

xaaxa

4021.850

由不確定度傳遞得(x1)x(x1)x

Ua2a

(U(Ua)2(Uaxa

0.)0.,0.00373)(20.001840.00373)(20.00184(0.00863)2(x0.0131(4030.4924021.850)

?,x0.0303(4