Marble (toy) individual artists such as Josh Simpson. Art marbles are usually around 50mm marble (a size also known as a "toe breaker"), but can vary, depending on the artist and the print. Marble (toy) A marble is a small spherical toy often made from glass, clay, steel, plastic or agate. These balls vary in size. Most commonly, they are about in diameter, but they may range from less than to over , while some art glass marbles for display purposes are over wide. Marbles can be used for a variety of games called marbles. They are often collected, both for nostalgia
Liquid marbles at the solid-air interface, the interfacial liquid marbles are constructed on the hexane/water interface using water droplets with a surface coating composed of nanoscale materials with special wettability (Figure 2). To realize interfacial water marbles at hexane/water interface, the individual particle size of the surface coating layer should be as small as possible, so that the contact line between the particles and the water reservoir can be minimized; special wettability with mixed hydrophobicity and hydrophilicity is also preferred for the interfacial water marble formation. The interfacial water marble can be fabricated by firstly coating a water droplet with nanomaterials with