Circular Diffraction Patterns HELP! 1. The problem statement, all variables and given/known data 2. Relevant equations theata_1=1.22(lambda)(L)/D L distance from screen, D diameter of slit w=2.44(lambda)(L)/D 3. The attempt at a solution so this is what i did not sure where i went wrong maybe at rounding off... w=2.44(lambda)(L)/D (10.3/1000)=92.44)(633*10^(-9))(0.8)/D solving for D i got the diameter to be the following D=0.119962....mm i rounded off to three significant figure D=0.120mm is this correct b/c when i did this i got it wrong, could some one tell me where i went wrong this.