Lyceum Society April 2019
Monday, April 1, 2019
The New York Academy of Sciences, 7 World Trade Center, 250 Greenwich St Fl 40, New York
Established in 1993, The Lyceum Society is comprised of the Academy’s retired and semi-retired Members. These Members are from diverse backgrounds, have different areas of scientific interest and expertise, and have practiced many professions. Their disciplines include Biological and Biomedical Sciences, Chemical and Physical Sciences, Mathematics and Information Sciences, Social Sciences, Engineering, Medicine, Dentistry, and many others.
The Society hosts convivial monthly meetings at the Academy. These meetings feature lectures and discussions with scientists from around the world, and also provide participating Members with the opportunity to give self-directed presentations and seminars based on their own specialties or new research interests. All Academy Members are welcome.
All Lyceum meetings (except December) are Brown Bag lunches.
April 01, 2019
Brown Bag Lunch
Three Dimensional Printing
3D printing has crept into our lives in ways that would have been almost unthinkable just a decade ago. At first, it was an intriguingly fun but costly toy, a great way for science clubs to make cute black chunky shapes. Today, we 3D print everything from very intricate mechanical parts to guns to human tissues to giant reaction vessels to substantial concrete houses. And it no longer involves skinny plastic thread, but also aluminum and other metals. Growth has been so fast, the 3D printing market is expected to top $30 billion in the next 5–8 years.
Does Time Flow?
Physicists and philosophers question the validity of one of the most observed and seemingly obvious appearance in our world: that time flows. Many in the physics and philosophy communities contend that the flow of time is not a fundamental feature of the world, nor even a fact of the world, but is an illusion. As a case in point, we will consider Brian Greene’s view of time in his PBS exposition “The Elegant Universe” holding that time may not flow, the past may not be gone, the future may already exist, and that now is not special. Most people, as observers of time’s passage, might agree with the Greek philosopher Heraclitus who expressed the idea that all is change and that change occurs with the flow of time. I will explore some of the motivation and reasons given for these positions and contrast the arguments made for each viewpoint.