Everyone knows the familiar brightness, color, and shape of a candle flame. If you look closely, you can see different colors in different areas of the flame. But what actually is a flame? What is it made of, why does have different colors, and why doesn’t it burn up the wick? Let’s try to shed some light on the science and chemistry of a candle flame.
When you find out that you need braces, it’s usually not the greatest feeling. The idea of having metal connected to your teeth for a year or more is not what you would necessarily wish for even if it will give you a great smile. It’s probably normal to wonder about the material they use for braces. What is that metal they are putting in your mouth? Can it rust or corrode in there? How strong is it? Is it stiff or flexible? If they’re putting metal in your mouth for over a year, you ought to know something about it.
