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 diamond's true worth is based on its carat size, it's clarity and color. It is also based on how well it is cut. These are the 4 Cs of diamonds. Of these four factors, shady jewelers take advantage of consumers most on a diamond's cut. The cut of a diamond determines how much light is refracted and how much brilliance and sparkle a diamond has. A poorly cut diamond won't sparkle as much and is much more common-thus costing jewelers much less. If a diamond is cut poorly, its value goes way down.