Month: September 2022

ISSUE OF SCALE. “For such materials, there is an absence of a clear separation of scales between the microphysics and macrophysics.” https://lnkd.in/dusKMKM View in LinkedIn

CRITICAL POINTS. “Despite this, ‘critical behaviour’ similar to thermal critical phenomena, characterized by a correlation length that diverges at the jamming-unjamming transition, and power-law critical exponents, have been observed in such materials.” https://lnkd.in/dusKMKM View in LinkedIn

FILAMENTOUS. “In addition, time-series analyses of density heterogeneities in granular matter under stress exhibit appearance of filamentary structures in the density profile.” (The cosmos equally has a filamentous appearance). https://lnkd.in/dusKMKM View in LinkedIn

MODEL. “The great variety of observed and simulated phenomena pertaining to granular matter motivates attempts to construct a simple unified description in the infrared, which captures the essence of the properties without depending too strongly on the underlying microscopics.” https://lnkd.in/dusKMKM View in LinkedIn

THE LEAP. “In this Letter, an analogue of Einstein’s general relativity, with appropriate restrictions to highlight spatial, rather than temporal, behaviour, is proposed as a preliminary attempt towards an infrared continuum description.” (From sand clumping to quantum phenomena). https://lnkd.in/dusKMKM View in LinkedIn

BALANCED SYMMETRIES. “The proposal naturally embodies the local translational and rotational symmetries corresponding respectively to force and torque balance in the standard approach to grain interactions, but with a Riemannian-geometrical description in terms of spatial curvature replacing the standard Newtonian force paradigm.” https://lnkd.in/dusKMKM View in LinkedIn

SURREALIST LEONORA CARRINGTON. “She sought to capture fleeting scenes of the subconscious where real memories and imagined visions mingle. In Carrington’s rich universe, ethereal beings enact rituals with unknown purposes; these creatures have characteristics of women and animals, and seem to be somewhere between humans and beasts.” https://lnkd.in/d8TMTkF View in LinkedIn

The most beautiful of all the ancient Greek coins, signed by Kimon. " " https://lnkd.in/dzZypJq View in LinkedIn

THE CORE ANALOGY. “General Relativity is well-known to be inherently non-linear, and to admit a great many time-dependent solutions (like gravitational collapse solutions) which, from a statistical standpoint correspond to distinctly non-equilibrium processes. In many cases though, constant-time spatial slices do reveal steady state aspects of such solutions.” https://lnkd.in/dusKMKM View in LinkedIn

THE BLACK HOLE. “In particular, an isotropically jammed state in granular matter corresponds in the analogue gravity description to the formation of a trapped surface in gravitational collapse, with the envelope of such trapped surfaces being a horizon.” https://lnkd.in/dusKMKM View in LinkedIn