Variety, according to people wiser than us, is the spice of life -- and Nokia's 7900 Prism is exactly 80 per cent spicier than the next mobile phone. Made up of triangular patterns and a sturdy but ...

A prism has a constant cross-section throughout its length. When the cross-section is a triangle, the prism is called a triangular prism. When the cross-section is a hexagon, the prism is called a ...

Prisms are commonly used in spectroscopy for dispersing or controlling the direction or polarisation of light. This can be helpful for splitting the incoming light into its wavelength components to ...