it bends the light, making the pencil seem a different length
Any light rays crossing the air-water border will be refracted, that is, bent. So, objects above the water will appear displaced. In other words, they will appear to be where they are not. You can see this phenomenon by placing a pencil in a glass of water. The pencil appears broken and discontinuous. This optical illusion is due to refraction.
The Silver Pencil was created in 1944.
Electric Pencil was created in 1976.
The Pencil of Nature was created in 1846.
The Carpenter's Pencil was created in 1998.
Pencil Fight was created in 2004.
Pencil Mania was created in 1932.
The Vermilion Pencil was created on 1922-03-19.
Pencil Thin Mustache was created in 1973-10.
because when u loosen your fingers and wiggle it it creates an illusion hope i helped
Derwent Cumberland Pencil Company was created in 1832.
Pencil Full of Lead was created on 2009-11-02.