Homework Assignment #2
Photons and Sources of Light
What you will learn from this section
- Electrons in atoms can have only specific amounts of
energy
- When electrons change energy levels they do so in jumps
("quantum jumps")
- Photons are created when excited electrons (or atoms or
molecules) jump to lower energies
- How the above three points explain the spectra of light
sources
How to approach this material
- Read section 1, the Nature of Light, from pages 7-end
- Look at these web sites
- Do the homework problems in this folder. If you need to:
- Study the tutorial on energy
- Review the tutorial on scientific notation. Remember the
meaning of prefixes such as "n" and "m"
when solving problems
- Do this unit's hands-on, "The Spectra of Light Sources" and post your results to the threaded discussion. Note if there are similarities or differences between your results and your classmates'.
If you have questions
- Send me an email.
- Post a question in the discussion forum
- Stop by the Virtual Classroom during posted office hours.
When you are finished
- Email your homework to me by the due date (see the assignment
folder)