Measure a Foot One of the experiments that I did for the topic
of Measurement when I was lecturing in a JC was to try to verify
this claim that our feet usually swell at night. It has been
stated in some websites, such as Answers.com that "Often, your
feet will swell in the latter part of the day." I showed
students the results of my measurement in the morning and
evening (25.1 and 25.2 cm respectively) and asked if the results
were conclusive. Showing them that the error bars for both
measurements overlap, I explained that even though the values of
the measurements seemed to suggest that the statement is
verified, the extent of uncertainty forbids us to conclude that
it is. To reduce the amount of uncertainty, one can use a more
precise instrument such as vernier calipers (if there's one big
enough for one's foot). Perhaps it is true that the size of the
foot is larger at the end of the day. This could be attributed
to the amount of water you drink or the activities throughout
the day. However, it is found t