The sign: Foamy or bubbly urine. What it means: You could have kidney disease. When your kidneyâs filtering units arenât working properly, that can lead to a build-up of protein in your urine. The protein then creates a foamy appearance when it hits the water in the toilet.
This gives us a point in the x1-x2 or phase plane that we can plot. Doing this for many values of t will then give us a sketch of what the solution will be doing in the phase plane. A sketch of a particular solution in the phase plane is called the trajectory of the solution.
The airplane can rotate around one, two, or all three axes simultaneously. Think of these axes as imaginary axles around which the airplane turns, much as a wheel would turn around axles positioned in these same three directions. flight controls and control surfaces (see the illustration below.) Lateral (pitch) axis -- an imaginary line from wingtip to wingtip . Rotation about the lateral axis is called pitch and is controlled by the elevator. The rotation is similar to a seesaw. The bar holding the seesaw is the lateral axis.