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Jumping spiders are able to climb glass and other very smooth surfaces because besides having two claws on each foot they also have sticky hairs (called scopulae) that hold onto the surface. Many tiny ends on each hair are held to the glass by van der Waals forces, the force that will make two very flat sheets of glass stick tightly together without any glue
Image dimensions: 5659 x 3904 pixels
Jumping spiders are able to climb glass and other very smooth surfaces because besides having two claws on each foot they also have sticky hairs (called scopulae) that hold onto the surface. Many tiny ends on each hair are held to the glass by van der Waals forces, the force that will make two very flat sheets of glass stick tightly together without any glue
Image dimensions: 5659 x 3904 pixels