The 19th-century physicist Michael Faraday was known not only for his seminal experimental contributions to electromagnetism but also for his public speaking. His annual Christmas lectures at the ...

As a flame changes shape by the millisecond, its heat release and stability are affected. Purdue University researchers have created patent-pending methods to dynamically manipulate a flame — from ...

If you tilt a candle sideways, why does the flame turn and keep pointing up? asks a reader. Think of the flame on a candle as a helium-filled balloon: No matter which way you hold the string or the ...