“Echo of Light” is an experimental audiovisual installation that represents the continuous movement and transformation of energy visually and symbolically. The installation utilizes laser beams reflecting between two large mirrors, and hereby creating the endless “Echo of Light.” Similar to sound waves that echo through space, these beams of light move in a zigzag pattern between the mirrors, forming a hypnotic, almost holographic effect. A special fog distribution system allows viewers to see the beams of light. The symbolism of the installation serves as a reminder about the sustainability of energy and human actions, thus encouraging viewers to be mindful of their own actions and impact on the world. It conveys the idea that, much like light, our words, thoughts, and actions continue to reflect in space, influencing the environment and creating changes and flows of energy.