Two points: we have no community. In the past many ran with groups of familiars in their generational cohort and through them met with similar groups and that was the medium through which strangers were made familiar enough to connect. It was much more organic. As a result, we've become atomized and in seeking to reconstruct that world, we've fit it into our screens. This results in reducing everything in our life to an interactive square within our glowing rectangle, our food lever within our Skinner box. Now, we're all a captured audience not unlike those dupes at the video poker in the gas stations in the muddy Midwest of my youth. Sad really, I've found myself more than once become that sun-leathered dupe, cigarette smoldering between lips, staring blankly at card choices, smacking away at the select/discard buttons like a monkey in an experiment.
Sunday, June 22, 2025
Sunday, June 15, 2025
Explaining life in terms of the statistical theory of entropy
"How would we express in terms of the statistical theory the marvellous faculty of a living organism, by which it delays the decay into thermodynamical equilibrium (death)? We said before: 'It feeds upon negative entropy', attracting, as it were, a stream of negative entropy upon itself, to compensate the entropy increase it produces by living and thus to maintain itself on a stationary and fairly low entropy level.
"If D is a measure of disorder, its reciprocal 1/D, can be regarded as a direct measure of order. Since the logarithm of 1/D is just minus the logarithm of D, we can write Boltzmann's equation thus:
- (entropy) = k log (1/D)
Hence the awkward expression 'negative entropy' can be replaced by a better one: entropy, taken with the negative sign, is itself a measure of order. Thus the device by which an organism maintains itself stationary at a fairly high level of orderliness ( = fairly low level of entropy) really consists in continually sucking orderliness from its environment. This conclusion is less paradoxical than it appears at first sight. Rather could it be blamed for triviality. Indeed, in the case of higher animals we know the kind of orderliness they feed upon well enough, viz. the extremely well-ordered state of matter in more or less complicated organic compounds, which serve them as food stuffs. After utilizing it they return it in a very much degraded form — not entirely degraded, however, for plants can still make use of it. (These, of course, have their most powerful supply of 'negative entropy' in the sunlight.)" (pp. 73-73)
from Erwin Schrodinger's "What is life?"
Entropy defined
"What is entropy? Let me first emphasize that it is not a hazy concept or idea, by a measurable physical quantity just like the length of a rod, the temperature at any given point of a body, the heat of fusion of a given crystal or the specific heat of any given substance. At the absolute zero point of temperature (roughly - 273°C) the entropy of any substance is zero. When you bring the substance into any other state by slow, reversible little steps (even if thereby the substance changes its physical or chemical nature or splits into two or more parts of different physical or chemical nature) the entropy increases by an amount which is computed by dividing every little portion of heat you had to supply in the procedure by the absolute temperature at which it was applied — and by summing up all the small contributions" (p. 71).
"Much more important for us here is the bearing on the statistical concept of order and disorder, a connection that was revealed by the investigations of Boltzmann and Gibbs in statistical physics. This too is an exact quantitative connection, and is expressed by
entropy = k log D,
where k is the so-called Boltzmann constant ( = 3.2983×10⁻²⁴ cal./°C) and D a quantitative measure of the atomistic disorder of the body in question. To give an exact explanation of this quantity D in brief non-technical terms is well-nigh impossible. The disorder it indicates is partly that of heat motion, party that which consists in different kinds of atoms or molecules being mixed at random, instead of being neatly separated ..." (p. 72).
as quoted in Erwin Schrodinger's "What is life?"
Saturday, June 14, 2025
Life's characteristic feature: staving off max entropy
Wednesday, June 11, 2025
x-ray induced mutation in genetic material: the minimum volume required
In discussing x-ray induced mutations in drosophila flies, Schrodinger denotes the method and target as such: No matter the type of radiation source (speaking in terms of x-ray to gamma rays here) as the dosage goes up, so does the mutation rate. The target for measuring this ionization here, aside from those irradiated drosophila flies, is called the 'standard substance,' that being air. It's chosen "not only for convenience, but also for the reason that organic tissues are composed of elements of the same atomic weight as air. A lower limit for the amount of ionizations or allied processes (excitations) in the tissue obtained simply by multiplying the number of ionizations in air by the ratio of the densities. It is thus fairly obvious, and is confirmed by a more critical investigation, that the single-event, causing a mutation, is just an ionization (or similar process) occurring within some 'critical' volume of the germ cell" (p. 44).
So, given a dosage of radiation, this 'critical volume' demonstrates the effects of irradiation through ionization. Ionization is when an atom is hit by a 'packet of energy' enough to excite the electron in its outermost shell, causing it to break off (ionization). In large enough examples, ionization, is at the heart of the photoelectric effect. That is, if you heat something (i.e., add energy to it) you cause that something to give off light. Imagine a person's hand giving off light after being hit by a gamma ray burst from a criticality event. Bad news, dude, bad news.
Now what is this 'critical volume of the germ cell?' That's the specific size (in volume) of genetic material that gets hit by a dose of radiation. Citing the seminal paper on this study of x-ray induced mutation, Schrodinger writes. "He arrives there at a size of only about ten average atomic distances cubed, containing thus only about 10^3 = a thousand atoms. The simplest interpretation of this result is that there is a fair chance of producing that mutation when an ionization (or excitation) occurs not more than about '10 atoms away' from some particular spot in the chromosome" (p. 44).
Armed with this knowledge Schrodinger notes that threats to humanity through ionizing radiation aren't of great concern if known sources of this radiation are regulated. He produces a simple example and leaves with a cautionary note. "To put it drastically, though perhaps a little naively, the injuriousness of a marriage between first cousins might very well be increased by the fact that their grandmother had served for a very long period as an X-ray nurse. It is not a point that need worry any individual personally. But any possibility of gradually infecting the human race with unwanted latent mutations ought to be a matter of concern to the community" (p. 45).
As an aside, I had read a book in my youth called 'The Therapy of Desire' by Martha Nussbaum wherein she outlines the developmental projects of various schools of Greek philosophy, resting upon their approach to both the passions and their obverse, stagnation. The point of her book, and the preliminary work of these Greek schools of thought, was to teach individuals how to regulate themselves optimally as a matter of a personal ethic. Her source material on the Epicureans and the Stoics reveal whole tranches of what would become Christian teaching that it struck me very hard how much of Christianity as it passed through Greek hands carried that very flavor of the learned community working with the basic story of the Χρίστος (Christos). Likewise, here I feel as if Schrodinger is setting the groundwork for a generation of X-men comics and their backstories, namely the fear of irradiation and the prospects that 'just the right dose' could produce a 'superman.' And as we all know, Kal-El, the original Superman derived his source of power from the sun's radiation.
Permanence, according to Erwin Schrodinger
Wednesday, June 4, 2025
The aperiodic crystal argument
"... the most essential part of a cell--the chromosome fibre--may suitably be called an aperiodic crystal."
(p. 5)
from Erwin Shrodinger's "What is life?"