Refraction is merely one of several possible boundary behaviors by which a light wave could behave when it encounters a new medium or an obstacle in its path. The transmission of light across a boundary between two media is accompanied by a change in both the speed and wavelength of the wave. The light wave not only changes directions at the boundary, it also speeds up or slows down and transforms into a wave with a larger or a shorter wavelength.
Each varietal of red wine has a slightly different calorie content. According to the USDA, an average red table wine contains 125 calories for every 5 fl oz, or approximately 625 calories in a bottle. Syrah, Merlot and Cabernet Sauvignon have 122 calories in 5 fl oz, or 610 calories per bottle. A Pinot Noir has slightly fewer calories -- 121 calories in 5 fl oz, or 605 calories per bottle.
Like other wines, Pinot Grigio contains a modest number of calories compared with sweeter or creamier mixed drinks. Each standard-sized bottle of Pinot Grigio has 750 ml, or 25.6 oz., according to TheWineTaster.com. Therefore, each bottle contains just over four 6 oz. servings of Pinot Grigio. According to the U.S. Department of Agriculture, 25.6 oz. of an average Pinot Grigio contains 623 calories. Split that bottle four ways, and each person will have a wine glass containing about 156 calories. Different brands may have higher or lower calorie counts.