At the beginning of their offshore migration, hatchling sea turtles enter the ocean at night and establish a course away from land by swimming directly into oceanic waves. How turtles can detect wave direction while swimming under water in darkness, however, has not been explained. Objects in a water column beneath the surface of the ocean describe a circular movement as waves pass above. In pr...

In recent years, hard turning has been found to be a well-known substitute for traditional grinding acquiring the finish quality of hardened steel without sacrificing productivity. There are many issues that should carefully understood and dealt with attain efficacious performance in turning. This article discusses modern manufacturing challenges focus on analyzing current state art process ter...