论文部分内容阅读
这里需要强调指出,式中摆长差δ1不是分别测量摆长l_2及l_1相减得到的,而是直接测量摆长差.由于在实验中直接测量摆长差δ1,不仅消除了传统单摆测摆长的零点测量的误差,而且由(8)式的误差公式可知,在δl较小的情况下(例如150～200mm)可用游标卡尺进行测量,测摆长差引入的误差已退居次要地位,而T_1、T_2是可以精确测量的,因此我们可以期待,由(8)式算出的g值将
It is important to emphasize here that the pendulum length difference δ1 is not measured by subtracting the pendulum lengths l_2 and l_1, but it is directly measuring the pendulum length difference. Since the pendulum length difference δ1 is measured directly in the experiment, it not only eliminates the traditional single pendulum measurement. The zero-point measurement error of the pendulum is known from the error formula of (8). When the δl is small (for example, 150 to 200 mm), the vernier caliper can be used for measurement. The error introduced by the measured pendulum length difference has retreated to a secondary position. , and T_1, T_2 can be accurately measured, so we can expect that the g value calculated by (8) will