Year: 2022

SEEKING VALIDATION. “It is therefore of physical interest to consider gedanken experiments in order to test the validity of the GSL in various physical situations.” (GSL = the generalized second law of thermodynamics). https://lnkd.in/d3sfhP6 View in LinkedIn

FIRST CHALLENGE. “In order to challenge the GSL, Bekenstein analyzed a gedanken experiment in which a finite-sized object with negligible self-gravity is assimilated into a black hole.” (GSL = the generalized second law of thermodynamics). https://lnkd.in/d3sfhP6 View in LinkedIn

THE FINDING. “Bekenstein conjectured the existence of a universal upper bound...on the entropy content of physical systems with negligible self-gravity.” https://lnkd.in/d3sfhP6 View in LinkedIn

QUANTUM FROM PARTICLES TO STARS. “Quantum physics allows to make statements about the behavior of a wide variety of many-particle systems at the atomic level, from salt crystals to neutron stars.” https://lnkd.in/djnqdiw View in LinkedIn

Montfalco Murallat, a door in the walled village. View in LinkedIn

FRAGMENT FROM NATURE this and next weekend features a 1982 article by Professor Alexander Rich of MIT on left-handed DNA, and how the early debate about DNA handedness was effectively resolved by better techniques. This is, in part, a historical note, in another part, a fresh look at the most influential molecule of the modern era of biochemistry. Fascinatingly, this textbook was published in typewriter font. https://lnkd.in/dadvE8B View in LinkedIn

ALEXANDER RICH “had a long and fertile career at MIT working on the relationship between the molecular structure and the function of biological information molecules DNA and RNA. Rich is perhaps best known for the elucidation of the three-dimensional structure of a transfer RNA molecule, and for the discovery of an alternative form of DNA that exists in certain biological contexts, known as Z-DNA.” Charming photo. https://lnkd.in/d_NxPpN View in LinkedIn