This file is from a shared repository and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionJohn Frost colour.jpg
English: Photograph of "Jack" Frost (John Carver Meadows Frost) at work in his Avro Canada laboratory (photo: 1952). He demonstrates the Coandă effect. Pressurized air flows out of the end of the red tube, and then over the top of the metal disk. The Coandă effect makes the air "stick" to the disk, bending down at the edges to flow vertically. This airflow supports the disk in the air.
The image in question, was part of a film project that I was involved in as screenwriter, original author and technical consultant. In the research phase, I obtained the rights to the extant Avro Aircraft film archives and the image was a still from an original 16 mm print that was used in the forthcoming book and documentary film. At the conclusion of the project, I retained rights to the research material. Bzuk (talk) 17:15, 22 November 2009 (UTC).
This work has been released into the public domain by its author, Bzuk at English Wikipedia. This applies worldwide. In some countries this may not be legally possible; if so: Bzuk grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.Public domainPublic domainfalsefalse
Original upload log
The original description page was here. All following user names refer to en.wikipedia.