The Tea Experiment

One night, I was lying awake because I was coughing, so I got up and made some tea. Because it was really, really late, I got tired, placed my mug on the heater that is right next to my head, and went to sleep. In the morning, I noticed (NOT surprisingly) that some of the tea had evaporated. Instead of immediately cleaning it up like any normal person would have done, I decided to perform a science experiment and see how many days it would take for my approximately 33%-full mug of tea to evaporate completely. As it turned out, it took three days. By that time, it had become a wee bit more difficult to scrape the dry, crusty tea bag off the side of my mug....