Obtain the proper kind of hydrogen peroxide. You can use hydrogen peroxide to clear acne using one of two methods: in a cream, which contains a concentration of up to 1% hydrogen peroxide; and in âpureâ liquid form, which should contain no more than a 3% concentration.
3. Pitch : Pitch is the theoretical distance a propeller will move through the water for each revolution. (i.e. a 21pitch propeller should move a boat forward 21 for each revolution, assuming there is no slippage).
Lateral (pitch) axis -- an imaginary line from wingtip to wingtip. 1  Rotation about the lateral axis is called pitch and is controlled by the elevator. 2  The rotation is similar to a seesaw. 3  This is known as the airplane's pitch attitude.