For typical aircraft flying at cruise conditions, it isadvantageous to have as much laminar flow over the wing as possiblebecause there is an increase in friction drag once the flowbecomes turbulent. Various techniques have been developed tohelp promote laminar flow over the wing, both in airfoil geometryconfigurations as well as active flow control mechanisms. Obtaininformation on one of these techniques. Summarize your findingsin a brief report.
Following Reflected and Refracted Rays Dispersion ▯n decreases as λ increases ▯ Ray 1 is the incident ray ▯For red ligh(λ = 700 nm) ▯ n is smaller (less bending) ▯ Ray 2 is the reflected ray ▯For blue light (λ = 400 nm) ▯ n is bigger (more bending) ▯Angular spreading (“dispersion”) of colors due to refraction ▯ Ray 3 is refracted into the lucite ▯ Ray 4 is reflected in the lucite ▯ Ray 5 is refracted as it enters the air from the lucite PHY2049: Chapter 33 1 PHY2049: Chapter 33 4 Rainbows Formed by Dispersion Example:(Spring 2014 final exam, Q15) ▯Light is refracted by spherical water droplets Example:(Fall 2013 final exam, Q19) ▯Sun must be behind you (rainbow is circular, with sun on axis) ▯Red light bent at a lesser a(top of rainbow)
