The role of the project manager encompasses many activities including: 1  Planning and Defining Scope. 2  Activity Planning and Sequencing. 3  Resource Planning. 4  Developing Schedules. 5  Time Estimating. 6  Cost Estimating. 7  Developing a Budget. 8  Documentation. 9  Creating Charts and Schedules. 10  Risk Analysis. 11  Managing Risks and Issues.
(Answer #1). The critical angle is the largest angle at which light rays inside a diamond can escape. The more a material bends light, the higher the RI Refractive index, the smaller its critical angle.Because diamond has a high RI, it has only a small critical angle, 24.5 degrees.Answer #1). The critical angle is the largest angle at which light rays inside a diamond can escape. The more a material bends light, the higher the RI Refractive index, the smaller its critical angle.
Often called a teardrop diamond, the pear-shape diamond combines, at one end, the brilliance and facet similarities of an oval-cut diamond, and, at the other end, the strong shape of a marquise diamond.In essence, one end is rounded and the other is pointed.he pear-shape diamond weighs 67.89 carats and is a champagne color. Itâs believed that the rough diamond from which it was cut weighed an astonishing 240 carats. It was first cut into a 75-carat pear shape and then re-cut into the 67.89-carat size to improve its brilliance.