Temperature, heat, and cooling curves

The 9:30 session opened with the Eureka heat and temperature playlist. 

During the video notes were transcribed from the video to the board. This included the temperatures table, something usually set aside for Wednesday during a regular term.

A teapot of boiling water was already set up along with a glass jar containing melting ice. Pohnpei coconut oil was pre-positioned in the refrigerator the day before. After the playlist a brief version of the Wednesday temperature demonstration was given. The temperature list was already on the board. This was an abbreviated list compared to a regular term.

A quick run through the list provided sufficient time to include coverage of relative humidity and the heat index. The Smartboard sensors provided the input data. This was reinforced using the weather service observational data. 

Trishia works solo gathering cooling curves data.

Eric recording data while Jonald reads the temperatures.

Mary-ellen and Ruthy "Shannon"

Clayton and Emars


The laboratory set-up at 11:30 was the first two columns on the left above. Arrival was a little late due to cleaning out the tutorial center, around 11:37. After explaining the laboratory and obtaining a predicted behavior (the red line), the experiment was launched at high noon, 12:00, simplifying the timing calculations. 

The third column was after the 34 minute mark.


The laboratory wrapped up with an explanation of what the equation is telling us followed by an overview of the mathematical models encountered to date. The compressed summer term helps surface the mathematical models as a core theme to the course. This has been a real plus this summer.

With only five lab teams, all data was captured in Desmos. The mean temperatures, in gray, were calculated on the fly using a calculator. 

The exponential decay for the mean temperatures. 

Comments

Post a Comment

Popular posts from this blog

Plotting polar coordinates in Desmos and a vector addition demonstrator

Image
In an earlier post I noted that Desmos did not directly plot polar coordinates. Not only was I incorrect, but Desmos responded to my blog to correct me! Although I had at some point seen that one could define a function f(x)=3x+5 and then have Desmos calculate f(6), I had not absorbed how this might be used to plot polar coordinates. The above works beautifully . Realizing that I could effectively program Desmos, I applied this thinking to demonstrating how to add two vectors when given the magnitudes m and the direction angles theta. The graph calculates the i and j components for the two vectors and then adds the vectors, graphically displaying the result while also providing information on the magnitude and direction of the vector sum. m1 and theta1 are the magnitude and direction angle for one of the two vectors, m2 and theta2 are the magnitude and direction for the other vector. All four are dynamically interactive and can be changed. The diagram purports to illustra...
Read more

Setting up a boxplot chart in Google Sheets with multiple boxplots on a single chart

Image
The  Google Statistics  add-on for Google Sheets can display multiple boxplots in a single chart. The key is the layout of the data. One column should be the variable by which the data is to be grouped, the other column should be the data to be box plotted. Set up the Statistics add-on with the data to be plotted as the variable, and the grouping column as the "by" variable. In this image I had deselected all but the boxplot option, the result was the appearance of the Moment, Standard errors, and Confidence intervals options. The default is apparently a 95% confidence interval for the mean. The result is multiple boxplots on a single chart with a common scale. The new tab that is created also quotes 95% confidence intervals for the mean. Note that as of 2018 the Google Statistics add-on cannot be found by search in the add-ons. In addition, as of May 2018 the add-on no longer verifies, possibly due to the add-on not having been updated since August 2017. One may ha...
Read more

Traditional food dishes of Micronesia

Image
Clara, Jennette, and Joanie presented ground hard taro cooked in an umw, effectively a hot rock oven. Pohnpeian: rotama. Pingelapese: sero. Mwoakillese: rodma. Mortlockese: Amahd. Kosrae: rodoma. After cooking in an umw the rotama is pounded with the petiole of a palm frond. Rotama is made from hard or swamp taro, known as mwahng on Pohnpei, mweian on Pingalap, pula in Mortlockese, and pahsruhk on Kosrae. In traditional times on the outer islands the women had primary responsibility for tending the taro while the men handled fishing and climbing tasks. Joesen and Noeleen presented fermented breadfruit from the outer islands of Yap such as Woleai and Eauripik. The raw ingredients were actually brought in from Yap, Noeleen prepared the maare.  The leaf wrap is ti leaf - Cordyline fruticosa. Pauleen, Barnson, Trisha, Verginia, Con-ray, and Maylanda from Kitti, Pohnpei brought in mahi umw, koahpnoair koakihr, and uht sukusuk. Above is breadfruit umw, mahi umw, o...
Read more