Any repeating process has frequency. In order that consider to measure it quantity of the repeating cycles and divide into time for which they occur. If there is no opportunity to count the number of repetitions (they happen too quickly), use special formulas.
It is required to you
- hours and electronic tester with a possibility of voltage measurement, current, inductance and electric capacitance of conductors
Instruction
1. Determination of frequency mechanical kolebaniydlya determination of frequency of mechanical oscillations include a stop watch and count a number of fluctuations. For this purpose mark a point to which the body returns after the next movement. After that divide the number of full waves into time in seconds, and receive the frequency measured in Hertz. If the body rotates around a motionless point, then on it any point is marked. For full wave take a whole revolution of this point. For determination of frequency divide quantity of whole revolutions into that time for which they were carried out.
2. Determination of frequency variable tokadlya determination of frequency of alternating current take a digital (electronic) tester. By means of the switch on its case expose the "measurement of frequency" mode. After that connect it to a source of alternating current. On the display of the device the current frequency of electric current will appear.
3. Determination of frequency in the oscillatory kontureposl of charging of the condenser in an oscillatory contour in it electromagnetic oscillations begin. For measurement of their frequency learn the capacity of the condenser and inductance of the coil which are an oscillatory contour. If there are no such data, remove them by means of a digital tester, serially connecting it to the condenser and the coil, previously having installed the switch on measurement of capacity in Farads, and inductance in Henry, respectively. Multiply the received results and take a square root from the received number. Then increase it by 6.28. After that 1 divide into the received number. As a result receive the frequency of an oscillatory contour in Henry.