Director's Cut: Trial 2

Director's Cut: Trial 2

The first two trials were done on the same day (last Wednesday in fact), before analysing the data collected, so the changes dealt with physical problems. After analysing, other flaws were revealed in some of the methodology as well.

• Even with an attempt at squeezing out air, placing uncooked GRB inside waterproof bags to keep them from dissolving in the displacement can still allowed for too much air. The plastic bag was too stiff to be compressed by the water. In retrospect, using a large enough sheet of cling wrap such that the opening could be kept above water would be more accurate.
• A preliminary look at the data indicates that the surface area calculations are going to be problematic. There's no way to make (and preserve) perfectly round spheres or circles (which have an added complication of depth) with according to exact measurements. Have thought of something to try for the flat GRB, but have no idea what to do for the round ones.

Edit: Will not make any more round GRB, instead focusing on investigating surface area:volume with less-curved shapes whose surface areas are easier to measure

I'll post this data after I've polished them 

• I overlooked procuring an apron, or at least a portable dry cloth to wipe off residues of dough. Now my tables are very clean, but my pants look like this:

Water and flour.

In other news, I've (finally) had to learn excel. Yay.

Questions after the two trials:

1. Does the temperature of the water affect its density, and therefore whether the GRBs will float in it?
2. Does the ratio of flour:water affect how the GRBs float? (e.g. density)
3. Since GRBs are water soluble, what does this mean for their cooking in water?
4. Does the amount of water in the pot affect how GRBs float?
5. Prelim points at GRBs shrinking, not expanding. How?

Edit: 1: Yes it does. 
Temp (°C)     Density (kg/m3)
+100    958.4
+80     971.8
+60     983.2
+40     992.2
+30     995.6502
+25     997.0479
+22     997.7735
+20     998.2071
+15     999.1026
+10     999.7026
+4     999.9720
0       999.8395
−10     998.117
−20    993.547
−30     983.85