Changes

<math>\frac{H_2}{H_1} = \frac{1}{2}(\sqrt{8{F_1^2} + 1} - 1)</math>

<math>\frac{H_2}{H_1} = \frac{1}{2}(\sqrt{8{F_1^2} + 1} - 1)</math>

where <math>F_1 = \sqrt{g}{Y_1}</sqrt></math>

where <math>F_1 = \sqrt{gY_1}</math>

F_1 is called the Froude number, g is the acceleration due to gravity, and Y_1 is the depth of the water.

F_1 is called the Froude number, g is the acceleration due to gravity, and Y_1 is the depth of the water.