|Picture of white light with |
continuous light spectrum.
The first type of spectrum we experimented with was continuous. White light, such as sunlight, will always have a continuous spectrum if it is incandescent. This means that within this spectrum the colors red, orange, yellow, green, blue, indigo, and purple will always show when the pure light is broken down. Another way to say it is, all of these colors combine to form white light and when seen with a spectroscope the colors appear in a continuous row.
The second type of spectrum we viewed was absorption. We viewed this by putting a bottle of red colored water up against a white light. We used our spectroscopes to peer through the bottle. When I looked through my spectroscope I noticed that I saw the light being transmitted but not the light that being absorbed. From this I determined that that red light absorbs blue light because I saw a lot of red and the green/blue lights had disappeared. In the absorption spectrum colors continue, but some may be missing.
|Light Spectrum seen for the |
fluorescent overhead light
All in all, these experiments that we did in this lab helped us to understand the 3 major different types of light spectra. Again, those include the: continuous spectrum, absorption spectrum, and emission line spectrum. Continuous light deals with plain white light and has a continuous streak of colors when seen with a spectroscope. The absorption spectrum has a colored light in front of white light & so when seen with a spectroscope you only see the colors that are transmitted, not absorbed. Finally, with the emission spectrum you see the break down of bars of define colors emitted, in our case, by the different gases. I learned a lot from these experiments and now truly understand the basics of each type of light spectra. For anyone else out there trying to learn the same material, I hope this helps to explain the types of light spectrums better & gives you some mental pictures to work with in order to comprehend this lab a bit easier. : )