Specially designed for the courses of "Safe Use of Electricity" and "Electricity" in middle school physics and vocational colleges, this course provides a visual demonstration of the phenomenon of "high-voltage arc electric shock", allowing students to understand the importance of "maintaining a safe distance" even without touching live objects. Usage: 1 Connect power → 2 Rotate the lever to adjust the distance between the person and the high-voltage line → 3 Observe the relationship between arc intensity and distance. Teachers can use the "Safety Distance Comparison Table" to have students record data and complete exploratory experiments. Applied to middle/high school physics laboratories, safety exhibition areas in science museums, popular science activities in power companies, and enterprise safety training classrooms.