Science Demonstrations, more ways to fail

Sigh. One last control experiment. Put the baking soda in the control jar. Oops, the control jar still doesn’t heat as fast as the other one (which is now effectively the "control"). I’ve got something which appears to be sensor/jar dependent but in an odd fashion. I did a check before running the experiment by heating the two jars for 10 minutes without any baking soda and they appeared to heat at the same rate. But the experiment ran for about 20 minutes and at 10 minutes the temperatures began to diverge. The final difference was only about 0.6C at 30 minutes. Still no 2C differences like Lueddecke. Sigh. Bigger containers next.