How'd this happen in my experiment??!! Im at a total loss now. As some of u guys may know, Ive been doing a science fair project on light refraction. I did the experiment, and somehting most peculiar happened. It is by Density Order Liquid Weight Density Angle of Refraction (1) 170g 1.06 g/mL 29.5° (2) 164g 1.03 g/mL 31° (3) 160g 0.99 g/mL 32° (4) 150g 0.89 g/mL 28.5° (5) 139.5g 0.785 g/mL 30° Why the heck is the Angle of refraction so erratic? shouldnt it decrease gradually as density decreases?? I did this experiment dozens and dozens of times (literally, I swear) How did this happen? Is there some variable I missed due to me being a grade 9 student with limited knowledge and cranial capacities?