A holograph of itself All [physical properties of matter] derive from the different patterns of the interaction of electrons and photons within the fields of the positively charged atomic nuclei, stabilized in a particular morphology by the interaction of the levels themselves. Matter is a holograph of itself in its own internal radiation. Matter versus Materials: A Historical View physics
Reality just seems to go on crunching I once met a fellow who thought that if you used General Relativity to compute a low-velocity problem, like an artillery shell, General Relativity would give you the wrong answer—not just a slow answer, but an experimentally wrong answer—because at low velocities, artillery shells are governed by Newtonian mechanics, not General Relativity. This is exactly how physics does not work. Reality just seems to go on crunching through General Relativity, even when it only makes a difference at the fourteenth decimal place, which a human would regard as a huge waste of computing power. Physics does it with brute force. No one has ever caught physics simplifying its calculations—or if someone did catch it, the Matrix Lords erased the memory afterward. Eliezer Yudkowsky, Rationality: From AI to Zombies physics
Corpuscles of nothing and atoms of something The structure of matter devolved ultimately into the intimate coexistence of something like corpuscles of nothing and atoms of something, segregating through the accidents of history to yield regions differing in density intimately interwoven on different scales. The experience of the world as well as human perception and analysis of any part of it is a matter of the angular scale of resolution and of the time necessary for making comparison between the different parts. Without such variations and without time to compare remembrances of them, nothing can be experiences. Cyril Stanley Smith, The Tiling Patterns of Sebastien Truchet and the Topology of Structural Hierarchy physicsperception
I know all about entropy Adell: I know as much as you do. Lupov: Then you know everything's got to run down someday. Isaac Asimov, The Last Question timedeathphysics
The Iridium System Several Low-Earth-Orbit (LEO) networks were proposed, but only one got off the ground: the Iridium system. The original Iridium proposal called for a "constellation" of 77 satellites, which gave the plan its name: the element iridium has atomic number 77, meaning that an iridium atom has 77 orbiting electrons. Before the satellites were launched, the constellation was scaled back to 66 active satellites, but no one wanted to change the name to Dysprosium. Brian Hayes, Infrastructure: A Guide to the Industrial Landscape physicscommunicationaerospacecosmos
Fermi Estimates and Dyson Designs An Article by Venkatesh Rao www.ribbonfarm.com A Fermi estimate is a quick-and-dirty solution to an arbitrary scientific or engineering analysis problem. Fermi estimation uses widely known numbers, readily observable phenomenology, basic physics equations, and a bunch of approximation techniques to arrive at rough answers that tend to be correct within an order of magnitude or so. The term is named for Enrico Fermi, who was famously good at this sort of thing. …It struck me that there is counterpart to this kind of thinking on the synthesis side, where you use similar techniques to arrive at a very rough design for a complex engineered artifact. I call such a design approach Dyson design, after the physicist Freeman Dyson, who was one of the best practitioners of it (not to be confused with inventor James Dyson, whose designs, ironically, are not Dyson designs). designphysics
The Evolution and Fate of Botanical Field Books An Essay from Field Notes on Science and Nature by James L. Reveal To serve as a reminderSterile creaturesFurther and further away
To serve as a reminder Looking back at my notebooks now, the information seems fairly sketchy, often abbreviated, and fairly uninformative. The purpose was merely to serve as a reminder for when, that evening, I would write up my notes in a proper field book. Mental infrastructure memory
Sterile creatures Now that we are in the era of personal computers, traditional field books are being replaced by computer files. By default such “field books” are sterile creatures—all the words are spelled properly, the location data are exact to a matter of a few feet, and everything is properly formatted. In the spring of 1998, I penciled my last entry into my signature field book with the bright orange cover. Thereafter I have maintained a computer-based field book. Oh, all the right stuff is there, clear, crisp and, well, dull… I tend to be overly particular about it—the format has to be right, everything properly spelled, the descriptive sequence in the proper order, and even the observations drafted with the final publication in mind (rather than what I happen to see at the moment). The emotions of finding something new, once mentioned in my handwritten field books, are now missing, as if my mental editor says “no, that is not proper for a scientific journal.” notetaking
Further and further away In looking over my own forty-five years of keeping a record of plant specimens, I find that I am personally moving further and further away from the words I generate, becoming more aloof and separate from the experience of the actual event of collecting, concentrating instead on the precision of where and when. It is merely record keeping for the sole purpose of giving the facts. With the decline of letter writing and the sterilization of field books, what we are losing is the individual. Field books are like letters that are replaced by often ephemeral emails. I fear that as we move further into the computer age we will similarly lose the detailed historical record that field books once provided. Sadly, the personalities of botanists will also be lost, for such musings as might be found in a field book are often telling to those wishing to know more of the past.