- #1
bartrocs
- 27
- 0
I'm preparing a poster presentation on the following paper for a physics course:
http://t.co/xiCLV7Y0ZH
I do not understand how figure 4 tells us about the red/blue shift. Just from the deflections of the peaks of the airy beam, as well as the deformation, how are we able to infer that there is a red shift effect?
I tried explaining this to myself by the spatial frequency of the observed peaks, however I realized that a beam that is escaping from a gravitational well should appear red shifted, yet this seemed to imply the opposite. I then realized that we are looking at an intensity distribution, so now I am confused as to how we can infer that a red shift type effect is present
http://t.co/xiCLV7Y0ZH
I do not understand how figure 4 tells us about the red/blue shift. Just from the deflections of the peaks of the airy beam, as well as the deformation, how are we able to infer that there is a red shift effect?
I tried explaining this to myself by the spatial frequency of the observed peaks, however I realized that a beam that is escaping from a gravitational well should appear red shifted, yet this seemed to imply the opposite. I then realized that we are looking at an intensity distribution, so now I am confused as to how we can infer that a red shift type effect is present