In "Emily's Science Lab: Invisible Orbeez Experiment," Emily Calandrelli, an MIT engineer and host of "Emily's Wonder Lab," explores the principles of light refraction and its effects on visibility. This educational video uses a practical experiment where Orbeez, transparent water beads, demonstrate how light travels through materials with different densities, causing changes in speed and direction, which explains optical illusions like a bending pencil in water. Calandrelli also integrates safety tips about the use of Orbeez and suggests creative applications for decoration. This content aligns with educational standards in physics and general science, fostering critical thinking and problem-solving skills. Based on Emily Calandrelli's best-selling book series, "Stay Curious and Keep Exploring," the video encourages learners to stay curious and apply scientific principles in real-world scenarios. Part of the "Emily's Science Lab" series.