Spectroscopy is a technique that uses the interaction of radiant energy with matter to identify or quantify a substance in a sample. A deuterium lamp is often used a light source in the ultraviolet region of the spectrum and the emission spectrum is shown. Is this a continuous or line emission spectrum?

Video transcript

Welcome back everyone. We're told that spectroscopy measures the electromagnetic spectra resulting from the interaction between matter and electromagnetic radiation. One form of spectroscopy is UV visible spectroscopy which involves the ultraviolet and visible regions of the electromagnetic spectrum shown below is an example of a UV visible spectra identify if this is a continuous or line spectrum. So we're going to begin by recalling that a continuous spectrum shows wavelengths of numerous values within a given wavelength. Or sorry, within a given range. And referring to a line emission spectrum, spell this properly line emission spectrum. We're going to recall that. This only shows some wavelengths within a discrete range. And so we wouldn't really see every wavelength of our electromagnetic spectrum displayed in a line emission spectrum. Now looking at our diagram were given the UV Vis spectra and we can see that it ranges from a wavelength of about 200 nanometers all the way out to 800 nanometers. So we can clearly see that all wavelengths are reflected by the U. V viz emission spectra. And so we would say that therefore our final answer is going to be that this is going to be a continuous spectrum. So choice A would be the correct choice to complete this example. I hope everything I explained was clear. If you have any questions please leave them down below and I will see everyone in the next practice video