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.
A half a cup serving of black beans provides 113 calories, 7.5 grams of protein, 7.5 grams of fiber, and are a good source of thiamin, folate, iron, magnesium, manganese, and phosphorus. Dried Beans. Dried beans and lentils are the more nutritious choice when you are deciding between canned or dry beans.