We examine the induced spin velocity in case of the Earth. Spin velocity is induced from the conversion of a constrained spatial rotation into a spatial displacement. Its effects on Earth as a celestial body are consequences of its properties, and they are examined in detail. The induced spin velocity has influence on the semiannual variation of the length of day. The annual and semiannual variations of the length of day are considered separately. The measured value in case of the semiannual variation of the length of the day is 5.44% more than the predicted, while the measured value in case of the annual variation of the length of the day is 5.36% less than the predicted.

我们检查了地球情况下的感应自旋速度。旋转速度是由受约束的空间旋转转换为空间位移而引起的。它对地球作为天体的影响是其特性的结果，并将对其进行详细研究。感应的自旋速度会影响一天中的半年变化。时间长度的年度和半年度变化将分别考虑。日长度每半年变化的情况下的测量值比预测值大5.44％，而日长度每半年变化的情况下的测量值比预测值低5.36％。