光敏电阻LDR的参数.PPT

e) 3.00 pt Graphics 1.00 pt Improper scale/aspect ratio obscuring data trend. (**) -0.20 pt Units or quantities missing in any of the axes. -0.30 pt Plot joined by saw tooth. -0.40 pt More than 30 % of the data points are misaligned (*). -0.30 pt h and ?h 2.00 pt h 1.00 pt Using least squares fit or equivalent numeric method. Graphically only. -0.50 pt Missing or incorrect units . -0.20 pt Incorrect number of digits. -0.10 pt If h 5.8?10-34 J·s or h 7.0?10-34 J·s -0.30 pt ?h 1.00 pt Using least squares fit or equivalent numeric method. -0.00 pt Graphically only. -0.50 pt ?h given without justification. -0.70 pt h and ?h given with inconsistent number of digits. -0.20 pt 智浪教育--普惠英才文库 Misaligned point: where ** Improper scale/aspect ratio: NOTA BENE: For the case where the solution was obtained by inverse engineering, using the known value of the Planck constant: Each part of the question affected by this procedure will be given 0.00 points. 智浪教育--普惠英才文库 智浪教育--普惠英才文库 * * * * * * * * * * * * * * * * * * * 部件 Platform Potentiometer Battery Lamp A V ? LDR Cover Ruler Solution filter Holder Grey filter Voltmeter Ammeter Ohmeter 智浪教育--普惠英才文库 实验步骤 用方程 (6)求斜率之前, 要确定一系列常数, 进行定标, 等等. T ?0 R ? 智浪教育--普惠英才文库 RB0 由 I = 0 , V 和I 的关系外推 V A 依据灯丝电阻 (RB)与温度 (T)的关系 a 由室温(T0)下的灯丝电阻(RB0)给出 万用表测量温度 I R R0 T? 灯丝温度的确定 RB RB0 实验数据拟合 智浪教育--普惠英才文库 ?? 滤光液体的透光波长 Solution of: Orange II. CuSO4 (it absorbs the infrared light). ?0 = 590 nm ?/nm 智浪教育--普惠英才文库 ??光敏电阻 LDR的参数 En Rn 0.512En Rn’ Grey filter 智浪教育--普惠英才文库 R V A 数据的测量 V I R RB=V/I T = aRB0.83 RB-0.83 lnR RB-0.83 lnR V1 I1 R1 RB1 T1 RB1-0.83 lnR1 V2 I2 R2 RB2 T2 RB2-0.83 lnR2 V3 I3 R3 RB3 T3 RB3-0.83 lnR3 Vn In Rn RBn Tn RBn-0.83 lnRn 智浪教育--普惠英才文库 RB-0.83 lnR 由斜率 得到 Planck′常数 h: Planck′s constant. k: Boltzmann′s constant. c: speed of light. 智浪教育--普惠英才文库 RB0 由 I = 0 , V 和I 的关系外推 a 由室温(T0)下的灯丝电阻(RB0)给出 万用表测量温度 T? 灯丝温度的确定 实验关键点: ??光敏电阻 LDR的参数 智浪教育--普惠英才文库 实验解答 Pm B ? V A P Photoresistor Incandescent Bulb Potent