Eureka at the Stanford Synchrotron Radiation Laboratory

-
As of today (26th of July) scientists are trying to read the final pages of the oldest known manuscript of Archimedes's work, the Archimedes palimpsest (click on the image).

Archimedes lived in the third century BC. In the tenth century AD, his works were copied by a scribe. This book of 90 pages was then reused in the twelfth century to produce a volume of 174 pages on which Christian prayers were inscribed. Forgers added religious images sometime after 1930. Today, much of the text has already been read, but ca. 15% of it remains indeciphered.

X-ray fluorescence imaging may help scientists to read this missing part. The ink contains iron, and traces of iron can be highlighted when bombarded with X-rays. The Stanford synchrotron has been used for this kind of work since 2005.

With some luck, we should be able to know what Archimedes wrote in those hidden pages of "The Method of Mechanical Theorems". Eureka indeed.

Comments

Post a Comment

Popular posts from this blog

(revised on Medium) On a sachet of brown sugar (series: notes to myself)

-
Image
Mid-morning, somewhere in Italy. Seating at a bar, in an elegant square, summery weather, a kind breeze, refreshing. An espresso macchiato comes with a brown sachet of sugar, to be added if you wish. I look at it. I look around. I have time to think. How do people deal with this task? Can one divide people, the sugary kind, into types according to how they open a sachet of sugar? A student, with interesting tattoos on her left shoulder, opens it by pinching the two sides and pulling them, gently ungluing the sachet. It requires her to use four fingers, each couple pinching a side of the sachet. She is attentive and careful. She better be. I know that feat is demanding. Too much force and the sachet may give in abruptly, spreading the sugar everywhere. Too little, and the little shell will hold on to its content and won’t be convinced to release its treasure. I love the cautions determination. She puts her hands together, palms touching at the bottom as if praying, to measure the effort...
Read more
-
I just published "On asking the wrong kind of questions (series: notes to myself)", happy 2024. https://link.medium.com/thDMgqTvZFb
Read more

Breve commento su "Non è il mio lutto" e la morte di Berlusconi.

-
Image
Ho sempre criticato Berlusconi, i suoi votanti, il suo partito, il berlusconismo, gli italoforzuti, i suoi governi, la tragedia (soprattutto morale, ma anche istituzionale, politica, culturale ed economica) che tutto ciò è stato per il paese... Berlusconi è stato un disastro per l'Italia, una sorta di Trump al potere o vicino al potere per decenni. Servirà moltissimo lavoro e tanto tempo per riparare i danni fatti, ammesso che si possano riparare.  Ma Mercoledì 14 Giugno ho spostato la lezione del corso che tengo a Bologna, affinché chi volesse potesse participare ai funerali di stato e commemorare la morte di Berlusconi, e perché l'attuale governo ha proclamato il lutto nazionale per un politico che (con mio scandalo e vergogna) è stato eletto democraticamente da milioni di italiani e italiane (che gli dei dell'Olimpo li perdonino, io non ci riesco, e posso solo rispettarne le scelte), e ha ricoperto la carica di primo ministro quattro volte.  Non è stata una forma di risp...
Read more

Sulla morte come "distanza che si apre nella vita"

-
Image
“La morte è una distanza che si apre nella vita, ma non è sparizione, distruzione, putrefazione.” Ho letto questa frase (chiamiamola non-P), è parte di un articolo giornalistico (non si può imporre un rigore scientifico, non è il contesto). Ho letto il resto dell’articolo. Non migliora. Non ha importanza. Desidero soffermarmi solo su questa frase. Da tanti anni non sono più un filosofo analitico, ma mi è rimasta l’inclinazione (il vizio senza pelo del lupo?) di (cercare di) usare le parole con attenzione e cura. Cercando di ancorarle a significati che non siano “futuristici” (parole in libertà). Troppe persone confondono il fatto che una frase sia grammaticale con il fatto che abbia un reale senso. Si può anche dire: P) “La morte non è una distanza che si apre nella vita, è sparizione, distruzione, putrefazione.” P è altrettanto grammaticale e credo che abbia molto più senso di non-P, almeno biologicamente e concettualmente. I fatti puntano in questa direzione. E chi sostiene il contra...
Read more

Onlife: Sulla morte di Corman McCarthy e "the best writers" della letteratura americana

-
Image
Corman McCarthy è stato descritto da alcuni come il più grande scrittore americano di [aggiungere qui un numero di secoli, oppure "la nostra epoca", oppure "una generazione" o semplicemente "sempre"]. Siccome sono insipiente, e lo avevo solo sentito nominare ma mai letto (ma i mie amici come mai non me lo hanno mai consigliato? che ci stanno a fare? O almeno Amazon, visto il numero di libri che compro, un "you may also like" lo poteva sputare no?), sono andato a vedere chi fosse. Ho letto un po' di cose su di lui, tutte molto interessanti. E poi mi sono chiesto chi rientra oggi in una lista più o meno accurata degli scrittori americani più importante degli ultimi 100 anni. Insomma, se uno dice, per esempio, "è morto il più grande scrittore americano del secolo" ti viene il dubbio di ricostruire la competizione gli ultimi cento anni. Le posizioni sono ovviamente e come sempre discutibili, ma mi è stato utile ricordare a chi si sta co...
Read more

The Loebner Prize from a judge's perspective

-
Image
This year, for the first time in its history, the Loebner Prize competition was held in England, at the University of Reading to be precise. It was organised by Kevin Warwick and Huma Shah. Independently of whether Turing might have been pleased (he was not well treated in this country, recall?), there was a satisfying sense of “coming home” of the Turing Test (henceforth TT ). Expectations were high, and they very highly advertised too. The meeting was perfectly organised. Having been invited to play the role of a judge, together with several other colleagues, including two members of the IEG , Mariarosaria Taddeo and Matteo Turilli ( here are their pictures and Rosaria's interview ) , I enjoyed the opportunity to see from close-up the machinery and the TT . It was intriguing and great fun. Because there were interviews with the BBC and other things going on, and because we were also supposed to take part in the parallel AISB Symposium on the TT , I had time to test only...
Read more

Between a rock and a hard place: Elon Musk's open letter and the Italian ban of Chat-GPT

-
Image
Interview by Adele Sarno for HuffPost, the Italian original is here The following English translation is provided by Google, apologies for any imprecision. Luciano Floridi, the digital philosopher, works between Oxford and Bologna, from next summer, he will leave Oxford to direct the Center for Digital Ethics at Yale. He has received the highest honour granted by the Italian Republic: Cavaliere di Gran Croce. According to the Elsevier Scopus database, he is the most cited living philosopher in the world. If today we talk about the "philosophy of information", it is thanks to him, who for 30 years, studied the connections between philosophy and the digital world. Professor Floridi, ChatGPT has been at the centre of the debate, especially these days. Elon Musk and a thousand other experts have written a letter asking for its development to be stopped for six months. In Italy, on the other hand, the privacy guarantor has decided to stop for 20 days until it complies with the pr...
Read more

Computers and logic

-
Computers are logical, or at least that’s what we hope. It is a relief to know that the receivers of so much attention, from so many people, and for such long hours are dependable systems, with no inclinations, temperament, or minds of their own. People, on the other hand, are crazy, or so we often suspect. They buy lottery tickets aware of the odds, smoke despite being literate, and believe that black cats could seriously damage their health. This is perhaps why we use computers to try to inculcate some logic in their heads. There is, however, a catch. You would not use a washing machine to teach your nephew how to clean his t-shirt. Likewise, our computers do very weird things in order to see that 5 + 7 = 12. So how can we rely on weird machines to teach logic to crazy minds? Although not exactly worded in this way, computer-based logic teaching was one of the themes addressed by several papers presented at two conferences recently organised by the International Association for Com...
Read more

Mind the app - considerations on the ethical risks of COVID-19 apps

-
[22 April update: at the Digital Ethics Lab (OII, University of Oxford) we have elaborated a list of 16 questions to check whether an app is ethically justifiable, the full article, open access, is available here ] There is a lot of talk about apps to deal with the pandemic . Some of the best solutions use the Bluetooth connection of mobile phones to determine the contact between people and therefore the probability of contagion. In theory, it may seem simple. In practice, there are several ethical problems, not only legal and  technical ones . To understand them, it is useful to distinguish between the validation and the verification of a system.  The validation of a system answers the question: "are we building the right system?". The answer is no if the app is illegal,  for example, the use of an app in the EU must comply with the GDPR; mind that this is necessary but not sufficient to make the app also ethically acceptable, see below; is unnecessar...
Read more