The "wick effect" refers to a phenomenon where a porous material, such as a wick in a candle or a piece of fabric, draws liquid upward through capillary action. This process occurs when the liquid is absorbed into the material's tiny spaces, allowing it to travel against gravity. The wick effect is essential in various applications, including candles, oil lamps, and even some types of fireplaces. In the context of fire safety, the wick effect can lead to dangerous situations. For example, if a flammable liquid seeps into a porous material, it can ignite and spread rapidly. Understanding the wick effect is crucial for preventing fire hazards in environments where flammable materials are present.