The World Wide Web is vast and my blog is viewed all over the world. You never know who is watching. My simple analytics give me some idea. I know, for example, that a guy based in Warsaw checks me out every day looking for some negative spin he can put on my blogposts. He’s best ignored.
However, I am often cheered by responses from other quarters, especially when they ask permission to use your work. Usually people just steal from the Net, but this request was different. This is the gist of what the enquirer said:
Dear John I am a researcher at Stanford University and wanted to use one of the images on your web page about whirligigs and dress weights attributed to Randy Dee.
This would be for an online journal for academic and scholarly purposes. Can I have permission from Randy and yourself to use the image? I will of course cite you etcetera … Thank you, Saad Bhamia
We said ‘yes’, of course. At this juncture I remind all detectorists that their seemingly mundane finds can help research and today Saad’s paper Hand-powered ultralow-cost paper centrifuge was published yesterday. See the full article online at Nature Biomedical Engineering
One of the most important machines in modern medicine can now be made with little more than paper, string, and tape.
I have little understanding of what it’s all about … here’s the beginning of an abstract. For those interested, clicking on the link above for further information:
a, Top: whirligig (or buzzer toys): image of an ancient buzz bone tied to a raw-hide, used as a charm to ward off evil spirits (reproduced with permission from the University of Cambridge Museum of Archaeology and Anthropology). Bottom: lead whirligig relics with saw-tooth edges (reproduced with permission from R. Dee and J. Winter, https://www.johnwinter.net/jw/2014/07/the-lead-whirligig)
In a global-health context, commercial centrifuges are expensive, bulky and electricity-powered, and thus constitute a critical bottleneck in the development of decentralized, battery-free point-of-care diagnostic devices. Here, we report an ultralow-cost (20 cents), lightweight (2 g), human-powered paper centrifuge (which we name ‘paperfuge’) designed on the basis of a theoretical model inspired by the fundamental mechanics of an ancient whirligig (or buzzer toy; 3,300 BC) …
… and the end The in-depth analysis of a simple toy has provided broad inspiration for developing human-powered, instrument-free POC devices.
There are FIVE videos in the supplementary information contained in the paper. They show the high-speed dynamics of a whirligig (paperfuge).
FOR A SIMPLE EXPLANATION OF THE DEVICE CLICK ON LINK BELOW