▎ 摘　　要

NOVELTY - The structure has a bottom plate (1) whose upper portion is provided with a vertical rod (2) that is fixed with a vacuum pipe body (4) through a transverse rod (3). Upper and lower different positions of the vacuum pipe body are provided with multiple arc-shaped light sheets (5). An outer wall of the vacuum pipe body is provided with a scale (6) for recording weight of the light sheet. A bottom portion of the vacuum pipe body is provided with a graphene buoyancy ball (10). The bottom plate is provided with an LED lamp (7) that is connected in opposite to the bottom portion of the vacuum pipe body. USE - Light buoyancy demonstration teaching structure. ADVANTAGE - The structure can intuitively display different light intensity and a light color according to graphene buoyancy ball pushing force, and improves convenience for people to intuitively demonstrate performance of graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a light buoyancy demonstration teaching structure. Bottom plate (1) Vertical rod (2) Transverse rod (3) Vacuum pipe body (4) Light sheets (5) Scale (6) LED lamp (7) Graphene buoyancy ball (10)