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.
Fluorescence is the blue-white light effect that one sees in diamonds under an ultraviolet light. Fluorescence is a (normally) blue-white light effect that some diamonds exhibit. However, fluorescence can only occur in the presence of ultraviolet light (UV light).It is for this reason that UV light is used by diamond mining operations to aid in finding diamonds. Overall, fluorescence has little to no effect on the light display of a diamond under normal lighting conditions.or example, a diamond that has strong fluorescence may cause a diamond with a color grade of I to appear clearer than its color grade when it is viewed in sunlight. What causes this is the effect of fluorescence on the diamond.