Grandview Heights High School - The Nature Of Time
The Physics Class of Jo Lee Participates in Exercises to Explore Time!
Research and development engineer Marshall Barnes explains to Grandview physics students that research into issues involving the nature of time is one of the top areas in phyics today. Later that week, Scientific American released a story confirming that.
Continuing with their exploration into the nature of time the next day, Marshall explained to the class that looking into the physics of time is a very hot topic right now and, in fact, there are a number of scientists who argue that time does not exist at all. As an example of this, he introduced the class to Julian Barbour and explained how Barbour believes that every "now" moment exists as a separate universe in and of itself. He then pointed out that not only does he not agree with this notion, but that he has researched it to the point of being able to prove that it isn't true. For example, Barbour admittedly fails to be able to explain the size that each "now" slice would be and his theory is based on his own "child-like" idea that he can't see time. In an interview with John Brockman, Barbour said "...if you try to get your hands on time, it is always slipping through your fingers...what we think is the flow of time - and even seeing motion - is an illusion".
Marshall pointed out to the class that Barbour, like all "time deniers" Barbour fails to be able to describe his theory completely without using words that are connected with time. This is apparent in the video below from 5:00 to 6:09.