Spectrum

Spectrum, the name given to coloured and other rays of pure light separated by refraction in its transmission through a prism, as exhibited on a screen in a darkened chamber.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Specific Gravity * Spectrum Analysis
Spalding
Spallanzani, Lazaro
Spandau
Spanheim, Friedrich
Spanish Main
Sparks, James
Sparta
Spartacus
Spasmodic School
Specific Gravity
Spectrum
Spectrum Analysis
Speculative, The
Spedding, James
Speke, John Banning
Spence, Joseph
Spencer, Herbert
Spencer Gulf
Spener, Philip Jacob
Spenser, Edmund
Spermaceti