Light & Color


SPECTRA allows visitors to be detectives, examining the “fingerprints” of elements in the form of spectra. The exhibit provides gas-filled tubes of Argon, Mercury vapor, Neon, Nitrogen, Helium and Xenon. As the user turns the exhibit's pointer, a different element lights up. The emission spectra of the various gases may be examined by selecting a particular gas and viewing it through a diffraction grating. Spectra of other sources of lighting around the museum can also be examined.