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.
A diamondâs cut is a very important quality to consider â a good cut truly brings out a stoneâs beauty, while a poor cut can make a stone with good color and clarity look dull. The cut of a diamond is one of its most important qualities, allowing its beauty to shine and downplaying any imperfections. The cut affects how light reflects from, enters and leaves the diamond. A good cut focuses light back out through the top or crown of the diamond and makes it shine. A poor cut can make a diamond â even one with good color and clarity â appear dull.