Color and light

The morning session began with the Limits of Light. 

After the video introduction to the electromagnetic spectrum the class viewed the visible spectrum with CD spectrograph boxes. A digital camera does not produce the smooth blend of colors that make up the visible spectrum.

During the Limits of Light video an image of a CD spectrum was captured for with the Pixel for use on the Blackview under a microscope.


The Blackview phone was used under the microscope. 


The microscope has been at ambient temperature for months down in the A101 cabinet. This is a scope that only the lower two powers are functional. The microscope is no longer used in biology. 

The Limits of Light, CD spectroscopes, and microscope were all fit into the morning session.

Given the video heavy morning session, the midday lab did not use the regular term introductory playlist. No pink is minus green, no pink shirt. Straight into laboratory eleven. This meant the "minus" phrases in the laboratory description did not make sense to the students.

Without this preface the RGB section of the laboratory felt out of place, somewhat untethered. Not sure why. I came away from the session wondering if the laboratory needed to taken back to a blank page. 

Back in the day laboratory eleven served the VIS majors introducing HSL, CSS, and X11 colors. This summer there is only one CIS major. The course no longer carries as many CIS majors as in the past. So the reason driving the RGB to HSL to X11 all done in HTML in a notepad has faded. Desmos does RGB but HSV instead of HSL. Without the intro videos, the sequence feels forced. Why not run with HSV alone, cover primary, secondary, and tertiary colors. Then maybe push into the margins of Desmos art: an HSV rainbow perhaps. The code would have to be greatly simplified:with S and V as fixed values. 


This is a laboratory done on a cell phone. Emars at work. If the old goal of serving CIS majors is tossed, what is the new goal? Can this lab be crafted to serve the mathematical universe theme that connects the laboratories together? 


The class at work. Smartboard is displaying the questions. Can this lab be made more exploratory? More open ended? Less of a fill-in-the-blank follow the recipe laboratory? How?

Ruthy and Mary-ellen 

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