CHEN 1211 Midterm: ECEN 5645 SExam4
Document Summary
Ecen 5645 introduction to optoelectronics fall 2018. September 12, 2018: the drude model expresses the wavelength dependence of the relative dielectric constant r( ) = R1( ) j r2( ) of materials with highly mobile electrons by the expression. 2 p( r j ) where p is the plasma wavelength and r is the relaxation wavelength. R = 100 m, (a) sketch the variation of r1( ) as a function of log10( . A child is going down for the third time 10 meters out into the lake. 10 meters west of the shore and 50 meter north of the child (making her 20 meters west of the child) when she becomes aware of the dire situation. She knows that she can run at 15 m/s on sand (watch out usain bolt) and can swim at 1. 5m/s in the lake water (likewise for michael phelps).
