Month: September 2022

My absolutely favorite tulips are just emerging in the wet warm weather. View in LinkedIn

INFORMATION FLOW. “Relative geometry in flat space-time: relative geometry would be present already in flat space-time and occur due to obstacles to information flow. It would introduce extra structure at changes in information connectivity, and so be non-trivial near e.g. apertures and edges.” https://link.springer.com/content/pdf/10.1007/JHEP07(2019)140.pdf View in LinkedIn

FREE OF OBSTACLES. “Relative geometry simply refers to a flat space-time which does not have a metric equal to the identity matrix in the vacuum reference frame (x,y). Away from obstacles, the relative geometry needs to approach the reference frame quickly, likely exponentially fast.” https://link.springer.com/content/pdf/10.1007/JHEP07(2019)140.pdf View in LinkedIn

ROLE OF SYMMETRY. “The key to a relative geometry is the symmetry of the set-up, and for that we now proceed with two illustrations: slit and edge diffraction.” https://link.springer.com/content/pdf/10.1007/JHEP07(2019)140.pdf View in LinkedIn

THE MOST FAMOUS EXPERIMENT. “In the case of single- and double-slit diffraction, the symmetry of the set-up is directly observable in the lines delineating maxima and minima of the probability distribution of photons after diffraction by the slit in question.” https://link.springer.com/content/pdf/10.1007/JHEP07(2019)140.pdf View in LinkedIn

DIFFRACTION GRATING. “In a relative geometry setting, these lines describe how particles on average are guided through space, setting a notion of what straight propagation means on a particle level, in relation to the apertures, which are obstacles to information exchange.” https://link.springer.com/content/pdf/10.1007/JHEP07(2019)140.pdf View in LinkedIn

HYPERBOLAE. “The overall pattern described (not focussing on details near the slits) is one of hyperbolae, since the maxima and/or minima follow lines of constant length difference to the two foci, embodied by either the edges of the one slit, or by the two slits.” https://link.springer.com/content/pdf/10.1007/JHEP07(2019)140.pdf View in LinkedIn

ARTIFICIAL LINE. “There is no such thing as life! There are interesting chemical reactions, like Stephen Hawking, and less interesting chemical reactions like salt crystals...There is no line, no ‘breath of life’ separating living from nonliving. That is a metaphysical bit of silliness. We should focus on interesting over boring chemical reactions and forget about this line that does not exist except in our own minds.” (The famous quantum physicist, Jonathan P. Dowling (2013), Page 430). https://lnkd.in/eWbBjM7i View in LinkedIn

The inchplant, tradescantia zebrina, has irridescent purple leaf undersides that shine through the upper leaf. Truly magnificent. View in LinkedIn

FRAGMENT FROM NATURE this weekend continues from last weekend and concludes on Sunday on the theme of mesocrystals in biomaterials. Both mesocrystals and biominerals are outliers in their unusual physical properties, and chemists have been trying to understand biomineralization in order to advance biomimicry chemistry to create advanced materials with enhanced properties. https://lnkd.in/eNACsghr View in LinkedIn