You need to find out, right? Lambda what? But if you can usually find it out now because you know, the D. Um Yeah, lambda is reverence of language. Right? So lambda is reverence to the light. And then according to which this data here is simply given by um two times lambda times D over D. Then we can use the five ft approximation. Um uh But but first let's look at the questions you asked, can we use the far field approximate? Of course we can because you know, to um meter is much bigger than the right? As long as two, as long as the capital D. And the question says that the distance from this To the center is 10 cm right? And and of course you can usually work out what that should be. You uh you will have something like, let me try to get it clear. Um So the question has already given you that the the departing they according to the question departing something like this. You expect to see some something bright pattern here and the doctor patterns somewhere here and the bright pattern going to be here. Right? And of course you have given us, you expect to see some patterns. Right? And the distance here is de and the distance here is captivity. Okay, so this is the viewing screen and these two sleeps. Um I can just for a quick and just quickly uh sketch what's happening. And the screen view screens two m away from them. Um so you have, according to the question, the two Swedes have a spaces which is a little d. But now here in this question basically you look at the uh the double slit experiment. 20 points_total) Calibrating Siemens Star Target Displayed ona Computer Screen Below is displayed 100 spoke Siemens Star Target: Assume it is displayed on computer screen: You will use this targetto test the your visual acuity as well as the limiting resolution ofyour cell phone The outer diameter ofthe start target is 180 +0.5 mm: Assume the display does not have enough resolution over the central 36 +0.5 mm region ofthe target for use as a resolution standard:Ī) (5 points) What is the spatial frequency and its uncertainty at the outer edge ofthe target? b) (5 points) What is the spatial frequency and its uncertainty at the inner edge of the target (at the point where the display has inadequate resolution)? c) (5 points) What would be the approximate distance from the target where the 80% radius would have spatial frequency of 20 Ip/deg? d) (5 points) What would be the useable range of spatial frequencies that this target would display at this distance?

Siemens star target