Tag Archives: PFTCT

Physics for the Coffee Table – Quiz # 7 – Seven Winners!

Situation I had the privilege last week to address a large audience at the Royal Aeronautical Society at the Engineering School at Cambridge University in the UK.   (click here for more information). The next morning Dr Hugh Hunt (Department of Engineering) showed my son Alexander and I around the Trinity College and the Trinity Clock Tower. We […]


Put your thinking caps on again. The Physics for the Coffee Table (PFTCT) Quiz number Seven will be broadcast on Wednesday 4th December at: 7 am-  New York 4 am – Los Angeles noon – London 1 pm – Paris 8 pm – Singapore 11 pm – Sydney Good luck!

PFTCT – Quiz # 6 – No Winners This Week!

Question # 6 See also:   Physics for the Coffee Table (PFTCT) Situation A major city (population 5 million) is planning to build a new airport at a new location inside the city.  Two sites are proposed: one beside the ocean and one twenty kilometers  inland from the ocean. Consider the noise levels originating from aircraft […]

Mach 55 Meteorite

Note:  … this blog is being updated as more information comes to hand …. I have just returned home from a trip and am amazed to see the many remarkable car dashboard-cams of the meteorite that impacted near Chelyabinsk, Russia: Click here if you have not seen these videos  (the third is shocking) this video is […]

Physics for the Coffee Table

About Physics for the Coffee Table Richard wrote a book in the late 1980s called “Physics For the Coffee Table”  (PFTCT). The book (or series of books) consisted of many seemingly basic questions about day to day events that had counter-intuitive answers. The book was inspired by a remarkable physicist by the name of Professor Julius Sumner […]

Slingshot Effect (QF32 p 346)

Editor’s Note I am pleased that this topic has generated much discussion in the pilot community.      Few readers understand if and why the Slingshot Effect exists which makes this topic is even more interesting.      Question QF32 reader John Reid asks: “The QF32’s appendix includes A380 specifications.   There is a statement […]