A "Radiation Pattern" describes how energy, such as radio waves or sound, is emitted from a source, like an antenna or speaker. It illustrates the strength and direction of the emitted energy, helping to visualize how well the source can transmit signals in various directions. These patterns can be represented in two dimensions or three dimensions, showing areas of strong and weak emissions. Understanding radiation patterns is crucial for optimizing the performance of devices like antennas in telecommunications and speakers in audio systems, ensuring effective coverage and sound distribution.