Wave practicals

Question 1

Leslie cube practical

Answer 1

1) place cube on heatproof mat
2) fill with boiled water
3) hold infrared detector at set distance and measure
4) repeat for every face
5) more infrared from black and more from Matt than shiny

Question 2

Melting wax

Answer 2

1) set up equipment
2) two ball bearing on metal plate with candle wax
3) sides facing towards flame are Matt black and silver
4) black plate bearing will fall first more radiation absorbed

Question 3

Oscilloscope

Answer 3

1) set up oscilloscope so detected waves at each microphone are separate
2) put microphones next to speaker then move one away until waves aligned but one wavelength apart
3) distance between microphone to find one wavelength

Question 4

Ripple tank

Answer 4

1) use signal generator attached dipper of a ripple tank to Create water waves at set frequency
2) dim the lights and turn on lamp. Should be like shadows
3) the distance between shadow lines that is equal to 10 wavelengths and divide by ten to get average wavelength
4) find wave speed

Question 5

Waves on strings

Answer 5

1) set up equipment and turn up signal generator and vibrate transducers
2) adjust frequency of the signal generator until clear wave on the string
3) measure the wavelength of these waves find length of 5 hard divide to get mean then double
4) frequency - signal generator