The change in speed is the cause and the change in direction (refraction) is the effect. Flickr Physics Photo Laser light shown passing through a rectangular block of lucite. It enters the block along the normal line with an angle of incidence of 0Â°. There is no bending upon entering, nor upon leaving the block.
There are 237 calories in 1 cup of Refried Beans (Canned). Calorie breakdown: 12% fat, 67% carbs, 21% protein.
According to the USDA, a half cup of fresh pinto beans that have been boiled without salt has 122 calories. For that half cup, you also get 7.7 grams of protein, 7.7 grams of fiber, 1.79 grams of iron, 39 grams of calcium and 373 grams of potassium.