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RCAHMW | Cropmarks 2018
The unprecedented spell of hot, dry weather across Wales has provided perfect conditions for archaeological aerial photography. As the drought has persisted across Wales, scores of long-buried archaeological sites have been revealed once again as ‘cropmarks’, or patterns of growth in ripening crops and parched grasslands. The Royal Commission’s aerial investigator Dr Toby Driver has been busy in the skies across mid and south Wales over the last week documenting known sites in the dry conditions, but also discovering hitherto lost monuments. With the drought expected to last at least another two weeks Toby will be surveying right across north and south Wales in a light aircraft to permanently record these discoveries for the National Monuments Record of Wales, before thunderstorms and rain wash away the markings until the next dry summer.
archaeology  climate  wales  scales 
5 weeks ago by madamim
Piano Major Scales - overview with pictures
Learn how to play the major scales on piano. All major scales illustrated with pictures including notes and fingerings.
piano  scales 
6 weeks ago by ritzlea
A Visual Way To Learn All 12 Major Keys of Music On The Piano
I want to share with you a visual way to learn all 12 major keys of music on the piano. I believe that any concept about playing the piano can be taught visually. This article about visually learning all 12 major keys on the piano is no exception.
piano  scales  learn  visually 
6 weeks ago by ritzlea
High-speed microjets issue from bursting oil gland reservoirs of citrus fruit | PNAS
The rupture of oil gland reservoirs housed near the outer surface of the citrus exocarp is a common experience to the discerning citrus consumer and bartenders the world over. These reservoirs often rupture outwardly in response to bending the peel, which compresses the soft material surrounding the reservoirs, the albedo, increasing fluid pressure in the reservoir. Ultimately, fluid pressure exceeds the failure strength of the outermost membrane, the flavedo. The ensuing high-velocity discharge of oil and exhaustive emptying of oil gland reservoirs creates a method for jetting small quantities of the aromatic oil. We compare this jetting behavior across five citrus hybrids through high-speed videography. The jetting oil undergoes an extreme acceleration to reach velocities in excess of 10 m/s. Through material characterization and finite element simulations, we rationalize the combination of tuned material properties and geometries enabling the internal reservoir pressures that produce explosive dispersal, finding the composite structure of the citrus peel is critical for microjet production.


I love this.
fruit  physics  scales  droplet 
7 weeks ago by madamim

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