You give the students information about taking liquids on a plane. shower gel 0.5l sun cream 150ml after shave 50ml toothpaste 0.75 you show them a list of liquids. which item(s) can be taken on the plane? © bksb 2018

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters