Rozenn had bought some awesome periodic table fabric (which I got for my birthday a few months back) and she finally had the time to complete a pair of periodic-table pillows for my office. They are awesome.
There’s still plenty more fabric, so I suspect there will be another set for my home office as well.
I recently purchased the AMG8833 thermal camera breakout from Adafruit. It’s an 8×8 pixel array of sensors that can be used to incorporate thermal vision into a project. I’m interested in monitoring a thermoelectric cooler. Adafruit provides a number of examples on how to interface the breakout with a Raspberry Pi or display connected to an Arduino. I wanted to try a different interface and see if I could control it with Mathematica. It took me longer to write this post than it did to write the software.
I’ve just gotten back from another wonderful BCCE conference (that’s Biennial Conference on Chemical Education) which was held at Notre Dame. It was a great opportunity to catch up with some friends and colleagues that I’ve missed since leaving CSU last year to join the College at Brockport.
I presented some of the work I’ve been doing on 3D printed periodic tables and will blog about their construction and use in the near future. There were some folks in the audience who wanted to get started right away with the objects, so I’ve posted them here on my website. You can download a zip file that contains 19 tables (about 3 MB).
The zip file contains the following periodic trends:
exceptions to the aufbau principle
absolute (Pearson) hardness
For the first four, there are four different sizes
132×76 $mm^2$ table with title, f-block elements and symbols on each of the blocks. These objects take about 3 hours to print.
150×21 $mm^2$ table with no title, no f-block elements and symbols on each of the blocks. These objects take about 2.5 hours to print.
108×36 $mm^2$ table with no title, no f-block elements and symbols on each of the blocks. These objects take about 2 hours to print.
60×24 $mm^2$ table with no title, no f-block elements and no symbols on the blocks. These objects take about 45 minutes to print.
As I build a collection of posts and materials for 3D-printed periodic tables, I will collect them here, so if you have interest in this project, bookmark that page.
Now that my students are wrapping up their summer research activities, it’s time to share some of my new designs. This one is inspired by my students – they wanted to design and 3D print keychains – and Rozenn’s request to have name tags for our plants.
Read on to see how I designed these, which involved a little bit of magic for the swash ornament.
Our hummingbird feeder was inundated with ants. While there are plenty of commercial options available for solving this problem, I wanted to try my hand at designing my own solution. In thinking about how a water trap should be designed, I came up with the following critical elements.
A leak-free cup for the water (duh)
An upper attachment point that prevents tipping of the cup
A lower attachment point that is integrated into the monolithic design.
My summer research group is busy with a slew of projects – from iridium oxide thin films for pH sensing to creating their own scientific instruments using 3D printing and Arduino microcontrollers. It all starts with learning how to make blinky lights.
Megan and Shauna presented their first semester’s work on developing sensors and methods for OMIS: the Open Millifluidic Inquiry System. Shauna is developing a method to perform alkalinity measurements in small volumes under dynamic flow conditions and Megan is working on a pH sensor based on anodically electrolyzed iridium oxide films. They’ve made some great progress not only building confidence in their laboratory skills but also learning how to present their research (in addition to actually doing the work). I’d consider that a good set of outcomes for their first semester in independent study (as Freshmen, no less). Expect big things from these ladies.
Last week, I posted an early photo of a Chemistry lab from Brockport. Not to be outdone, my wife Rozenn (historian of the Western Monroe Historical Society at the Morgan Manning House) found this picture in one of her books:The caption for the picture reads:
The [Brockport] Chemistry Laboratory: The 1899 yearbook describes the chemistry laboratory as “one of the best appointed in the state, having ample table room for 50 students at one time … The department has over $2,500 worth of physical apparatus, over 2,500 stereopticon slides and some 3,000 specimens.”
That $2,500 in instrumentation would be a bit over 70 thousand in today’s dollars, and I’m happy to say that our department has far more instrumentation than that. The reference to thousands of specimens and stereopticon slides got me thinking about what was taught in Chemistry 118 years ago (hey that’s one year for every element on the periodic table). A quick web search brought me to this article, (which is behind a paywall if you don’t have access to ACS journals) that reviews an historical Chemistry textbook from 1809. It was written by Jane Marcet to “… provide women with a method of educating themselves in chemistry …” and uses a conversational style that is not seen in contemporary instructional materials. This #ThrowbackThursday has me thinking about revisiting some teaching styles (to justify procrastinating on that pile of grading for one more day).