Differentiate between continuous spectra and atomic spectra.

<p>Since ordinary white light consists of waves with all the wavelengths in the visible range, a ray of white light is spread out into a series of coloured bands called spectrum. The light of red colour which has the longest wavelength is deviated the least while the violet light, which has the shortest wavelength, is deviated the most.</p><p>The spectrum of white light, that we can see, ranges from violet at 7.50 * 1014 Hz to red at</p><p>4*1014 Hz. Such a spectrum is called a continuous spectrum (Continuous because violet merges into blue, blue into green and so on). A similar spectrum is produced when a rainbow forms in the sky.</p><p>The emission spectra of atoms in the gas phase, on the other hand, do not show a continuous spread of wavelength from red to violet, rather they emit light only at specific wavelengths with dark spaces between them.</p><p>Such spectra are called line spectra or atomic spectra because the emitted radiation is identified by the appearance of bright lines in the spectra.</p>

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