- #1
map7s
- 146
- 0
When a reflector is added to the previous setup, as shown in Figure 9 (page 201), a standing wave can be created. We are using a different detector in this case. Measuring the detector output as a function of distance along the goniometer (look it up!), we see that there are maxima and minima in the signal. Starting at one of the maxima, we find 3 additional maxima after moving the reflector a distance of 4.29 cm. Therefore, the frequency of the microwaves from this generator is ? GHz.
I first divided 0.0429 by 3 to find out the length of each wavelength and then used the equation c=wavelength*f to solve for f
(3E8)/(0.0429/3)=f
then I took that number and divided it by 1E9 to convert to GHz.
At first I thought that I messed up something about the wavelength and that maye it should be divided by four instead of three...so I tried that, and my answer was still wrong. :(
I first divided 0.0429 by 3 to find out the length of each wavelength and then used the equation c=wavelength*f to solve for f
(3E8)/(0.0429/3)=f
then I took that number and divided it by 1E9 to convert to GHz.
At first I thought that I messed up something about the wavelength and that maye it should be divided by four instead of three...so I tried that, and my answer was still wrong. :(