Typical examples are poking a hole in the snow and looking down into the hole to see blue light or the blue color associated with the depths of crevasses in glaciers. In each case the blue light is the product of a relatively long travel path through the snow or ice. So the spectral selection is related to absorption, and not reflection as is sometimes thought. In simplest of terms, think of the ice or snow layer as a filter. If it is only a centimeter thick, all the light makes it through, but if it is a meter thick, mostly blue light makes it through. 395 Fact Credit: National Snow and Ice Data Center NSIDC The National Snow and Ice Data Center
If you need to, you can add extra flavor to your iced tea with a spritz of lemon or lime. Saving 200 calories a day switching from a sugary drink to unsweetened iced tea may help you lose almost 1/2 pound a week without making any other changes to your diet or activity.
Source(s): I am a Research Chef and I like Unsweetened ice tea. You can try to use less tea bags. I only like sun tea. Sun tea is where you put the water and the tea bags into a glass jar and set it in the sun to brew. I have found that by brewing it by the cup or by actually steeping it in a steeping spoon, I would always get it too tart...