3.3.5 Data recording and processing
1)Data recording
Record observation in Table 3.3.1 and Table 3.3.2.
Table 3.3.1 The data for telescope reading
Table 3.3.2 The data for the radius of the wire,distance between the telescope and optical lever,the optical lever constant,original length of the wire
2)Data processing(https://www.daowen.com)
(1)Calculationby successive differences methods:
Then
(2)Calculate Young’s modulus E and its relative deviation(Estandard=2.06×1011 N/m):
by successive differences methods:
