误差的产生与减小小刚和小明用同一把刻度尺测量同一本书的边长,两人测量的方法均正确,但读数却有差别,这是什么原因呢?原来任何正确的测量结果均存在误差.1.什么是误差.在测量仪器无损坏、测量方法正确的前提下,测量值与真实值之间的差异叫误差.2.误差产生的原因.物理实验离不开对物理量的测量,测量有直接的,也有间接的.由于仪器、实验条件、环境等因素的限制,测量不可能无限精确,物理量的测量值与客观存在的真实值之间总会存在着一定的差异,同时在测量者进行估读时,不同的人可能估 Errors and reduce Xiaogang and Xiao Ming with the same scale to measure the same book side length, the two methods of measurement are correct, but the readings are different, what is the reason? The original any correct measurement results are There is error .1 what is the error in the measuring instrument without damage, the measurement method is correct under the premise of the difference between the measured value and the real value is called the error .2 error causes. Physical experiments can not do without the physical measurement There are always some indirect and indirect measurements. Due to the limitation of instruments, experimental conditions and environment, the measurement can not be infinitely accurate. There is always a certain difference between the measured value of the physical quantity and the true value of the objective existence. When a surveyor makes an estimate, different people may estimate