Bladder infections are caused by bacteria in the bladder. Escherichia coli (E. coli) is usually the bacteria that causes a bladder infection. Bladders normally have a small amount of bacteria in them and urinating helps flush out the bacteria, but sometimes the bacteria grows so fast it causes a bladder infection.
aspect ratio. n. 1. The width-to-height ratio of an image or of the area used to display an image. Most widescreen televisions have an aspect ratio of 16:9. 2. The span-to-mean-chord ratio of an airfoil. aspect ratio.
The Aspect Ratio of a wing is defined to be the square of the span divided by the wing area and is given the symbol AR. For a rectangular wing, this reduces to the ratio of the span to the chord length as shown at the upper right of the figure. AR = s^2 / A = s^2 / (s * c) = s / c.