This term optics was reduced to a single day wedged between blue light black light microplastics, and Shock and Awe: The story of electricity . A tube was used for filling, moving apparent depth to the north table. A glass dish not preview used was also deployed. In the 1000 ml cylinders I used Sacagawea coins. These slide more readily for centering at the bottom than pennies. Despite being larger than external penny, the use of the Sacagawea was functional. Morning indices of 1.27, 1.29, and 1.36 were obtained. The 11:00 section did worse with indices from 0.9 to 1.75, only a single group near 1.33 at 1.27. Anecdotally the 11:00 section each term seems to generate larger errors than the 8:00 section. Before one dives into a deep analysis, today there were 11:00 section students who attended at 8:00 and 8:00 section students who attended at 11:00. The difference is not necessarily linked to the students who enroll in these sections. This is not a case of 8:...