Refraction like a pencil going into water
Answer:
Compared to High angle, relatively less presence of Crystallographic misalignment in grain boundary for small angle is reason behind its less effectiveness in interfering with slip process
Explanation:
Because of relatively much less presence of crystallographic misalignment in grain boundary for small angle, small grain boundaries are not as effective in compare to high angle in interfering with slip process
Less crystallographic misalignment in grain boundary causes not much change in slip direction and therefore interference to slip process is minimal.
It shortens so that the tips reach faster
At one later moment, its speed is 1. 20Mm/s (non relativistic because v is much less than the speed of light).
