ASTRONOMY 105 Observational Astronomy Lab D Data Sheet Name _______________________________________ Lab D: Identifying Lines in the Solar Spectrum Table 2 -- Determining the Scale Factor Lines (a) Location of 1st line (nm) (b) L ocation of 2nd line (nm) (c) Distance between lines (mm ) (a - b) Distance between lines (nm) = (a - b) / c Scale Factor (nm/mm ) K, F 393.4 486.1 42 92.7 2.2 H, E 130.2 2.2 F, C 170.2 2.3 K, D 2 195.6 2.2 Average: 2.2 nm/mm Table 3 -- Identification of "Unknown" Lines Reference Line Name Wavelength (nm) K 393.4 ASTRONOMY 105 Observational Astronomy Lab D Data Sheet Unknown Line (a) Distance from ref. line (mm ) (b = a x 2.2) Distance (nm) Wavelength (nm) (from Table 5) Element Name 1 411 2 424 3 433 4 440 5 463 Table 4 Part II Using the Internet, answer the following questions: 1) The solar spectrum is a good example of what type of spectrum? 2) What is the temperature of the Sun’s surface? 3) The light that we see on Earth, sun is created in what part of the sun? 4) How can the spectrum of the sun help Astronomers in studying other stars?