Shadow of a Doubt - Latest Issue

February 2020

NCAS Public Lecture Series

Should We Worry About 5G Towers?

Roopesh Ojha, Ph.D.

Saturday, February 8, 1:30pm - 4:00pm
Connie Morella Library
7400 Arlington Road
Bethesda, MD [map] [directions]
(Bethesda Metro station)
FREE admission – Everyone welcome, members and non-members

The fifth generation wireless technology for digital cellular networks, popularly known as 5G, is rapidly being deployed around the world. The leap in network speeds it will enable have several well-known benefits and, if the past is any guide, the most profound benefits haven't even been imagined yet. 5G uses radio frequencies that are higher than the radio frequencies in current use. In some quarters, concerns have been raised about putative health impacts of these radio waves. In this talk, Dr Ojha will take a look at 5G from the physics perspective as well as the statistics perspective and discuss where the balance of probabilities lies.

Roopesh Ojha has worked for the Harvard Smithsonian Center for Astrophysics (including a year operating a telescope at the South Pole) in Cambridge, MA, the Australia Telescope National Facility in Sydney, and the United States Naval Observatory in Washington, DC. He currently works for the Fermi Gamma-ray Space telescope primarily studying the physics of active galactic nuclei - galaxies where the dominant source of energy is matter falling onto a central supermassive black hole. Dr Ojha is known for his ability to communicate science at any level, from highly specialized scientific meetings to elementary school students. He is a regular speaker at local schools, non-profit organizations, and STEM events.

Refreshments will be available.


At the speaker's request, this event will not be recorded for the NCAS YouTube channel.

March NCAS Lecture
Biologist Adam Ruben (co-host of the "Outrageous Acts of Science" series on Science Channel) discusses what he's learned from judging school science fairs in "It Came from the Science Fair!"  How do kids learn science, think about science, and make absolutely maddeningly incorrect assumptions about science?  Sunday, March 15 at Arlington Central Library's Barbara M. Donnellan Auditorium.

AmazonSmile: Thanks to our members who are supporting NCAS!
When shopping at smile.amazon.com, you'll find the same low prices, vast selection, and convenient shopping experience as Amazon.com, with the added bonus that a portion of the purchase price (0.5%) goes to NCAS! It's simple and automatic, and it doesn't cost you anything!

AmazonSmile's disbursements to NCAS in the third quarter of 2019 came to $13.51, meaning that over $2700 of purchases were designated in support of NCAS.  (As an example of how NCAS can put that money to good use, it's more than enough to cover a half hour of a Montgomery County lecture room rental.)

Thanks again to our members who have chosen to support NCAS!

For more information:
http://smile.amazon.com/about
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