Finely chop the onion and pour the salt and allspice over the onion, mixing them well. Meanwhile, soak the bulgur in warm water for 20 minutes and squeeze out the excess water, (or soak in the lemon juice for a crunchier and more lemony flavor).
(under construction). Wave period. Wave frequency is also related to another measurement called the wave period (T). The wave period is just how much time it takes for one cycle to pass and the units are always in terms of time.The faster a wave moves, its wave period becomes smaller.Instead of measuring in terms of a fixed time unit, the second, the wave period uses a fixed number of cycles, one cycle ...he wave period is just how much time it takes for one cycle to pass and the units are always in terms of time. The faster a wave moves, its wave period becomes smaller. Instead of measuring in terms of a fixed time unit, the second, the wave period uses a fixed number of cycles, one cycle ...
A wave's frequency is the number of cycles that are completed in a certain amount of time. The symbol for frequency is the lowercase f and we measure it in cycles per second, which is the same as the unit hertz. A wave with a frequency of 20 Hz completes 20 wave cycles every second.Be careful that you don't confuse frequency with period. This is a common mistake. wave is a disturbance that travels through a medium in a periodic fashion, carrying energy without transporting matter. Waves are described and measured by five wave parameters: the period, the frequency, the amplitude, the wavelength, and the speed.