tradecenter

David Chandler has a Bachelor’s degree in physics, a Master’s degree in education, and another Master’s degree in mathematics. A few years ago he retired from 35 years of teaching physics and mathematics at the high school and college levels. Since about 2007 he has been active as a researcher with what he calls the "science wing" of the 9/11 Truth Movement. For a number of years he worked with Architects and Engineers for 9/11 Truth and is currently the Coordinator of Scientists for 9/11 Truth.

David became involved with studying the building collapses at the World Trade Center when he realized he could use the frame tracking software he used in his physics teaching, to measure various velocities and accelerations associated with the 9/11 building collapses. He is best known for his measurements demonstrating the absolute freefall of World Trade Center Building 7, proving that NIST’s claims about that building were false. His work led to NIST changing its final report to admitting freefall, even though they continue to deny its clear implications.

David has authored and co-authored a number of scientific papers related to 9/11 including Destruction of the World Trade Center North Tower and Fundamental Physics. He has also created a large number of videos analyzing various aspects of the World Trade Center Collapses and presented them to the public on YouTube (with backups on BitChute). He maintains a web site with his own research in collaboration with several other researchers, at 911speakout.org.