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.
Although, most nutrition charts don't split hairs on residual sugar content and allow for both red and white wines to weigh in at 25 calories per ounce of wine. White Wine Calories. While white wines often retain more sugar in the fermentation process, the additional caloric burden is quite negligible, unless it is a sweet dessert wine or ice wine. For your typical Chardonnay, Sauvignon Blanc, Pinot Grigio and the like, you can still count on 25 calories per ounce of white wine. Wine and Calories, the Bottom Line. Just like all other aspects of calorie-counting, it's the portion size that really matters. Most nutrition charts have a caloric content that is based on a 4-ounce glass of wine (literally a half cup), yet most wine glasses are filled with 5-6 ounces of wine, making a realistic glass of wine more like 125-150 calories per ...