1 Place the bulgur in a bowl, and cover with water by 1/2 inch. 2  Soak for 20 minutes, until slightly softened. 3  Drain through a cheesecloth-lined strainer, and press the bulgur against the strainer to squeeze out excess water.
Amplitude. Amplitude is a measurement of the vertical distance of the wave from the average. The wave axis is the average height of the wave over one cycle, and is usually considered to be zero. Heights above and below the average are given positive and negative values, respectively. The wave shape shown below is called a sine wave. The maximum and minimum amplitudes of this sine wave are the heights measured from the wave axis (white line) to the top of the wave peak and bottom of the wave trough.
A wave with a large amplitude will be particularly tall, and a wave with a small aptitude will be particularly short. It turns out that the amplitude tells you how much energy is in the wave. A high amplitude wave is a high-energy wave, and a low-amplitude wave is a low-energy wave. In the case of sound waves, a high amplitude sound will be loud, and a low amplitude sound will be quiet. Or with light waves, a high amplitude beam of light will be bright, and a low amplitude beam of light will be dim. But amplitude isn't the only factor that affects the energy of a wave. The other factor is frequency.