Cos ϕ. This light needs to vacation farther when compared to the axial light-weight to succeed in a screen, and after that it strikes the display at A further angle ϕ. The net final result is that the oblique illumination to the display screen is smaller than the axial illumination https://iwatch-bands65319.ampblogs.com/5-tips-about-agriculture-monitoring-you-can-use-today-66462198