The gravitational force in the Universe under which it has evolved from a state almost uniform at the Big Bang until now, when matter is concentrated in galaxies, stars and planets, is provided by what is termed ‘dark matter.” But in spite of the essential role that this extra material plays, we know almost nothing about its nature, behavior and composition,…
Tag: entropy
A protocol to minimize the thermodynamic cost of erasing a single bit over a given amount of time
Stochastic thermodynamics theory is a framework that delineates the amount of heat, dynamics and entropy in small (i.e., mesoscopic) systems that are far from a state of thermodynamic equilibrium. In recent years, scientists have tried to use this theory to better understand the dynamics underlying a variety of systems, including colloidal particles, DNA, RNA, enzymes, molecular motors and electronic devices. …
Physicists pin down the pay off between speed and entropy
“You have to work harder to get the job done faster,” explains Gianmaria Falasco, a researcher at the University of Luxembourg as he sums up the results of his latest work with Massimiliano Esposito. This will come as no surprise to anyone with any experience of racing around trying to meet appointments and deadlines, but by defining specific parameters for the…
‘DiceKeys’ Creates a Master Password For Life With One Roll
Stuart Schechter, a computer scientist at the University of California, Berkeley, is launching DiceKeys, a simple kit for physically generating a single super-secure key that can serve as the basis for creating all the most important passwords in your life for years or even decades to come. Wired reports: With little more than a plastic contraption that looks a bit like…
Black holes are like a hologram
The theory of relativity describes black holes as being spherical, smooth and simple. Quantum theory describes them as being extremely complex and full of information. New research now proposes a surprising solution to this apparent duality. Source: https://earthsky.org/space/black-holes-are-like-a-hologram…