Wolfram Alpha website is the Google of math and physics. If you want to do calculations on Wien's Law, you type "wien's law" and you will get a calculator for Wien's Law with all sorts of other information. The purpose of this activity is to practice some basic calculations of physical properties of sunlight.
- Use Wolfram Alpha to calculate the most probable wavelengths emitted by the surface of the Earth (T=300 K) and the Sun (T=5778 K) using one or more of the laws discussed on the previous page of this lesson. What is the meaning of the "most probable wavelength"?
- Calculate the energy flux (power density) emitted by those Earth's and Sun's surfaces using Stefan-Boltzmann Law.
- Apply the Inverse Square Law to determine the "extraterrestrial solar flux" at the Earth using the Sun's emitted flux found in Question 2.
- What is the meaning of "extraterrestrial solar flux" and how is it further transformed within the Earth's atmosphere?
Submitting Your Work
Prepare a written report and upload your report to Canvas (Lesson 3 Learning Activity Dropbox) in PDF or docx format.
View the Rubric in Canvas by which this assignment will be graded.
See the Calendar tab in Canvas for specific due dates.