- dipstick, stopwatch, electronic pressure gauge, standard signal generator, oscilloscope, frequency.
To determine the height of the waves near the shore in shallow water slide at the bottom of the dipstick.Note the division into dipstick, coinciding with the upper and lower (crest and trough) levels of the passing wave it.Subtract from the greater value is less than the value and get the value of the wave height.For a more accurate measurement, use the electronic manometer.Place it on the sensor where you wish to measure the height of the wave.Note the readings during the passage over the sensor crest and trough of the wave.Subtract from the greater value is less than the value and get the value of the differential p
ressure corresponding to the height of the wave.
to determine the velocity of the wave Note the stopwatch time between the passage of the tide gauge sensor or two adjacent crests of the waves.With two dipstick determine the wavelength.To do this, place them so that the tops of two adjacent waves passed by the tide gauge at the same time.Then measure the distance between the depth gauge (in meters).It will be equal to the wavelength.Divide 60 on the stopwatch measured the time and multiply the wavelength.Receive wave velocity (in meters per minute).Example: the passage of the wave is 2 seconds, and the wavelength is 3.5 meters.In this case, the velocity of the wave will be (60/2) × 3,5 = 105 meters per minute.
To convert to meters per second, divide the result by 60 (105/60 = 1.75 meters per second), and for conversion to kilometers per hour, multiply by 60 and dividing it by one thousand (105× 60 = 6300 meters per hour, 6300/1000 = 6.3 kilometers per hour).
To determine the parameters of the electrical signal, use special devices.Connect the generator of standard signals to the oscilloscope.Set generator output amplitude of 1 volt.Turn on the oscilloscope and adjust sensitivity in such a way that the upper level of the signal coincides with the first wide vertical strip of the screen grid.Turn off the generator and connect the source of the signal.Count on a wide vertical bands of the input signal amplitude.
Connect the power of the signal to the input frequency.Read the frequency in the frequency indicator.For the wavelength divide the speed of light on the frequency of the signal under study.Example: The measured frequency is 100 MHz, the wavelength is equal to 299792458/100000000 = 2.99 meters.