Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency. The period is the duration of time of one cycle in a repeating event, so the period is the reciprocal of the frequency.For example, if a newborn baby's heart beats at a frequency of 120 times a minute, its period â the interval between beats â is half a second (60 seconds (i.e., a minute) divided by 120 beats).or each dot, f is the frequency in hertz (Hz) â meaning the number of times per second (i.e. cycles per second) that it flashes â while T is the flashes' period in seconds (s), meaning the number of seconds per cycle. Each T and f are reciprocal.
The last name Kuznetsov is most common among Russian family names in the region from Upper Oka to Middle Volga. In English, there is also a similar last name â Smith. 4. Popov. The last name Popovpoints directly to the occupation of the father â pope (priest).
A huge majority of Russians also end their last names in evich, ovich, or just ich. For example, some very popular surnames in Russia are Kuzmich and Verenich. Surnames ending in evich are also very popular. For example, there is Stasevich, Fyodorovych, Ogiyevich, Alkhimovich, and Denisovich.It is believed that the ich ending last names originated from northern Belarus and southwestern Russia.f you or your relatives live in Russia, go ahead and add your surname to the list. This list is periodically updated from its original location semi-automatically (see the talk page for details).