Storyline. In the Blue Ridge Mountains of Virginia, during the Great Depression, the Walton family makes its small income from its saw mill on Walton's Mountain. The story is told through the eyes of John Boy, who wants to be a novelist, goes to college, and eventually fulfills his dream.
The SI unit for period is the second. For counts per unit of time, the SI unit for frequency is hertz (Hz), named after the German physicist Heinrich Hertz; 1 Hz means that an event repeats once per second.A previous name for this unit was cycles per second (cps).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 time period of oscillation of a wave is defined as the time taken by any element of the string to complete one such oscillation. For a sine wave represented by the equation y (0, t) = -a sin(Ït), the time period is given mathematically as T = 2Ï/Ï. Frequency. The frequency of a sinusoidal wave can be defined as the number of complete oscillations made by any element of the wave per unit time. For a sinusoidal wave represented by the equation y (0,t) = -a, frequency of the wave is given by, Its unit is Hertz abbreviated as Hz. One Hertz is equal to one complete oscillation taking place per second.