Recent content by xyz_physics

Hello guys, can you please help me figure out how to solve this problem. Many thanks! A scanning He–Ne laser that scans at a rate of 10 s−1 emits 5 mW through an aperture of 0.7 cm. If the beam divergence is 5 milliradian, then, for an intrabeamviewing distance of 200 cm, calculate (a) the...