A9 Activity Light & Temperature

Please download the lab instructions for this activity.

Docx file
pdf file

In this lab you will need to access this interactive simulation:

Wein's Law demonstration of the relationship between color and temperature: 
https://phet.colorado.edu/sims/html/blackbody-spectrum/latest/blackbody-spectrum_en.html

These is a fun interactive application, and the concept of color and temperature is very important in astronomy, so have fun with this. 

Important note:  In question #3 students are sometimes confused because it appears as if the blackbody curve has disappeared.  It actually hasn't, but just is so low and to the right, that it doesn't show.  You have to use both the "plus" buttons on the vertical and horizontal axis in order to see the full curve again.  Play around with these until it looks similar in shape to the curves you have been working with in the other questions of this lab.

Please type your answers into the text box below. 

Note that all the temperature readings are in KELVINS. Refer to the lectures to remind yourself how temperatures on the Kelvin, Fahrenheit, and Celsius scales correlate.

Note that all wavelength readings are in MICRONS (micrometers, or m). 1 m = 1000 nm. So, for example, green light has a wavelength of 550 nm  or 0.55 m.