Measure the distance across the shaft hole of the pulley with a measuring tape. Divide this by two with your calculator. If the shaft hole is 1 inch wide, then: 1 divided by 2 equals 1/2. Add the distance from the edge of the shaft hole to 1/2 the distance across the shaft hole: 6 plus 1/2 equals 6 1/2. Multiply the result by 2: 6 1/2 times 2 equals 13, the size of the pulley. A 13-inch pulley is suitable for use with ropes 1.6 inches in diameter, or line commonly sized as 1 1/2-inch line.
Different materials have different values of work function. Generally, elements with low I.P values have low work function such as Li, Na, K, Rb, and Cs. The negative potential of the plate 'C' at which the photo electric current becomes zero is called stopping potential or cut-off potential. Stopping potential is that value of retarding potential difference between two plates which is just sufficient to halt the most energetic photo electrons emitted.
hyperpolarization. A change in the value of the resting membrane potential towards a more negative value. The inside of the cell becomes more negative than the outside. Hyperpolarization is inhibitory because the membrane potential moves away from the neuron's threshold at which an action potential could occur.Example: the retinal photoreceptor potentials when stimulated by light.See depolarization; receptor potential; resting membrane potential; synapse.yperpolarization. any increase in the amount of electrical charge separated by the cell membrane and hence in the strength of the membrane potential. In cardiology this is the process by which an electrical fiber, at the end of phase 3 repolarization, becomes more negative than usual. (hÄ«'pÄr-pÅ'lÄr-i-zÄ'shÅ­n),