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Giovanni Bordiga
Attends University of Trento
Lives in Trento, TN
2,799 followers|757,487 views

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### Giovanni Bordiga

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Cool!   I'd love to watch more video-stories like this.

As the LHC ramps up again, discover an untold story behind the Higgs Boson search and learn how science at CERN is really done....﻿
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### Giovanni Bordiga

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Nice story to celebrate #PiDay! 😁

How to remember 100,000 digits of pi

The retired Japanese engineer Akira Haraguchi (1946–) claims to hold the world record for reciting the most memorized digits of the number pi. He set the record starting at 9am on October 3, 2006, and reached digit number 100,000 at 1.28am on October 4, 2006.

The event was filmed in a public hall near Tokyo. Haraguchi took 5-minute breaks to eat every two hours, and even his trips to the toilet were filmed to prove that the feat was genuine. This broke Haraguchi's previous record of 83,431 digits, which he performed from July 1–2, 2005.

The reason I say that Haraguchi claims to hold the record is that, for some reason, the Guinness World Records organization has failed to recognize this achievement, despite the existence of witnesses and detailed documentation. The Guinness-recognized record for reciting pi is 67,890 digits by Lu Chao, a 24-year-old graduate student from China, who recited the digits, without error, in 24 hours and 4 minutes.

Haraguchi's technique for memorizing long lists of numbers is quite interesting. He assigns kana characters to each number, each of which represents a Japanese syllable. In his system, the digit 0 can be read as o, ra, ri, ru, re, ro, wo, on or oh; the digit 1 can be read as a, i, u, e, hi, bi, pi, an, ah, hy, hyan, bya, or byan; and there are analogous rules for the other digits.

Using this system, Haraguchi has created many stories and poems, including a story about the 12th century hero Minamoto no Yoshitsune. The first 15 digits of pi, which are 3.14159265358979, are rendered in Haraguchi's system as the words saishi ikokuni mukosan kowakunaku, whose approximate meaning is “the wife and children have gone abroad; the husband is not scared.”

Given all this, it may be surprising to learn that as a child, Haraguchi was neither a prodigy nor a mathematical genius. On the contrary, one of his teachers once made him stand to attention in the hallway as a punishment for badly failing to memorize multiplication tables of one-digit numbers.

Akira Haraguchi: http://en.wikipedia.org/wiki/Akira_Haraguchi

Minamoto no Yoshitsune: http://en.wikipedia.org/wiki/Minamoto_no_Yoshitsune

The Kana writing system: http://en.wikipedia.org/wiki/Kana

A 2006 article from the Japan Times about Haraguchi: http://goo.gl/d4H2pB
It looks as if the article's URL may change at some point, so you may want to Google the article's title instead: How can anyone remember 100,000 numbers?

The web site http://pi-world-ranking-list.com/ maintains a list of records of reciting from memory digits of the irrational numbers pi, e, and the square root of 2.

Picture credit: Travis Morgan

Picture source and associated poem: https://www.flickr.com/photos/morgantj/5575500301/in/photolist

#mathematics #piday  ﻿
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Via ​﻿
Walter Pitts was used to being bullied. He’d been born into a tough family in Prohibition-era Detroit, where his father, a boiler-maker,…
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### Giovanni Bordiga

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On how non-ionizing radiations don't cause brain cancer... #mustwatch﻿
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### Giovanni Bordiga

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Does the Scientific Method need Revision?
Theoretical physics has problems. That’s nothing new — if it wasn’t so, then we’d have nothing left to do. But especially in high energy physics and quantum gravity, progress has basically stalled since the development of the standard model in the mid 70s. ...﻿
Theoretical physics has problems. That’s nothing new — if it wasn’t so, then we’d have nothing left to do. But especially in high energy physics and quantum gravity, progress has basically stalled since the development of the...
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### Giovanni Bordiga

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Reversing climate change

"...We’re hopeful, because sometimes engineers and scientists do achieve the impossible..."

Via , thanks a lot for sharing. (http://goo.gl/YkwzNt)﻿
Today&rsquo;s renewable energy technologies won&rsquo;t save us. So what will?
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### Giovanni Bordiga

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Have him in circles
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### Giovanni Bordiga

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Nice and quick video on gravitational locking! 😉﻿
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Stupendo! Semplice ed efficace ;-)﻿
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### Giovanni Bordiga

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[Image Source: Asia Tech Hub] In January, Lawrence Krauss wrote a very nice feature article for the Bulletin of the Atomic Scientists, titled “Scientists as celebrities: Bad for science or good for society?” In his essay, he ...
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hmmm﻿

### Giovanni Bordiga

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Sun-Jupiter at the speed of light: ~45 minutes

Click the link below and watch the video, you'll see how "slow" light is at the astronomical scale...yes tediously slow seems appropriate.

PS: watch it without thinking about relativistic effects. 😉

Slow Light

We think of light as being extraordinarily fast. It’s so fast that a beam of light could travel from New York to Los Angeles in about a hundredth of a second. If anything can be called fast, then that ultimate speed limit must surely qualify. And yet, on an astronomical scale, light is tediously slow. Our solar system is a mere speck in the vast scale of the cosmos, and yet light takes time to journey even that speck.

You can get a feel for slowness of light in the video, where the journey of light is shown in real time. From the instant it leaves the Sun’s surface, to just past Jupiter takes nearly three-quarters of an hour. A video showing the journey all the way to Pluto would take more than 5 hours. It would take about 18 hours to reach Voyager 1. All that time to take the smallest step into the universe.

As you watch this video (or part of it) keep in mind that this isn’t a representation of “rocket speed,” or any speed we can remotely achieve. It is the limit of all possible speeds. It is the expanding sphere of influence for anything we do. We are bound by that speed, as is everything else in the universe.﻿
We think of light as being fast, but on a cosmic scale it's incredibly slow.
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yeah, you would also have distance compression (exactly to zero). 😊﻿

### Giovanni Bordiga

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Matter of time... #mustwatch

Updated animation of Falcon Heavy flight and booster recovery. Check it out: http://youtu.be/4Ca6x4QbpoM﻿
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### Giovanni Bordiga

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I totally agree.
Anyway, go and watch the movie. ;-)

A Review of the New Stephen Hawking Movie by a Prevalent Gravitational Physicist

A member of my Ph.D. thesis committee and one of my mentors at Perimeter, Professor Eric Poisson, was asked by the academic journal Classical and Quantum Gravity to review the new Stephen Hawking movie.

It's well worth the read. After he showed it to me, I talked to Eric for a bit about the movie. He and I both agreed that if Rocky has a training montage in a sports movie, Hawking should have had a "research" montage showing him struggle to attain the very difficult results that we celebrate today.﻿
The Theory of Everything directed by James Marsh, starring Eddie Redmayne and Felicity Jones. We physicists can count ourselves lucky these days. We enjoy an unprecedented presence in popular cultu...
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Have him in circles
2,799 people
Communities
30 communities
Education
• University of Trento
Ingegneria Civile, 2014 - present
Laurea magistrale - Master degree
• University of Trento
Ingegneria Civile, 2011 - 2014
Laurea triennale - Bachelor degree
• I.T.C.G. "C. Battisti", Salò
Geometra, 2006 - 2011
Basic Information
Gender
Male
Birthday
November 6
Story
Tagline
A hundred times every day I remind myself that my inner and outer life depend on the labors of other men, living and dead, and that I must exert every effort in order to give in the same measure I have received.
Introduction

Studio per diventare ingegnere civile ma i miei interessi spaziano in quasi tutti i campi della scienza e della tecnica, in particolare la fisica, la matematica, l'informatica.

Mi interesso molto di tecnologia, specialmente dell'intero mondo Google. In effetti cerchio ogni Googler che mi capita a tiro qui su G+.

Per hobby mi diletto a imparare la programmazione su Android.

Apprezzo anche la fotografia, preferibilmente urban.

Altro su di me:

• Fiero di non avere un profilo FB
• Cultore di The Big Bang Theory (se non lo conoscete → vergogna)
• Nerd but not gamer
• Fiero possessore di Nexus 5 e Nexus 7
• Ubuntu User
• Bitcoin Enthusiast

Possibili cerchie in cui inserirmi:
• Geeks
• Tech Lovers
• Android Lovers
• Nerds
• Amazing photo sharers
• Ubuntu Lovers

Eng

I study to become a civil engineer but I have interests which range in almost all fields of science and technology, especially in physics, mathematics, computer science (#STEM area).

I am very interested in technology, especially the entire Google world. I actually circle every Googler I find here on G+.

As a hobby I delight to learn programming on Android.

I also appreciate photography, preferably urban.

Work
Occupation
Studente
Places
Currently
Trento, TN
Previously
Gardone Riviera, BS
Giovanni Bordiga's +1's are the things they like, agree with, or want to recommend.
 Tenetevi pronti, LHC si sta svegliando | Borborigmi di un fisico renitentewww.borborigmi.orgQuand'è l'ultima volta che ho postato una schermata di controllo di LHC? Quelli che un paio di anni fa frequentavano già queste pagine forse
 Keplero: Su Encelado potrebbe esserci attività idrotermalewww.keplero.orgUn blog di Amedeo Balbi. Divulgazione scientifica (astrofisica e cosmologia, ma non solo) con un occhio alla cultura pop, e (sporadiche) div
 GreenAddress Bitcoin Walletmarket.android.comThe safer Bitcoin wallet that puts you in control. It uses multisig to improve security (adding 2 factor for instance or limits) and Hierarc
 LinkedInmarket.android.comOpportunity is always within reach with the LinkedIn app for Android. Our Android app makes it even easier to build your personal brand, mak
 2 GB gratis di spazio Google Drive se farete un controllo di sicurezzawww.androidworld.itOggi è la Giornata della Sicurezza in Internet, e per ricordarcelo Google ci invita a fare un piccolo checkup dello stato del nostro account
 Google Earth Pro ora è gratis: ecco cosa puoi farci - Wiredwww.wired.itIl servizio Google Earth Pro è disponibile gratuitamente: ecco a cosa serve
 Come ho imparato a non preoccuparmi e ad amare il Machine Learningitaliaxlascienza.it"Non costruirai mai una macchina a somiglianza della mente umana" (Bibbia Cattolica Orangista) Cos’hanno in comune Elon Musk, Stephen Hawkin
 The Man Who Tried to Redeem the World with Logic - Issue 21: Information...nautil.usWalter Pitts was used to being bullied. He’d been born into a tough family in Prohibition-era Detroit, where his father, a boiler-maker,…
 Alan Turing : The Imitation Game - Storia di un enigmamarket.android.comDA QUESTO LIBRO E' TRATTO IL FILM "THE IMITATION GAME" «Una delle migliori biografi e d’argomento scientifico che siano mai state scritte».
 The First Spacewalkwww.bbc.co.ukHow the first human to take steps in outer space nearly didn't return to Earth
 Deep Learning Summitwww.re-work.coRE.WORK combines entrepreneurship, technology and science to solve some of the world's greatest challenges using emerging technology. We sho
 Game theorists crack pokerwww.nature.comAn 'essentially unbeatable' algorithm for the popular card game points to strategies for solving real-life problems without having complete
 Does the Scientific Method need Revision?backreaction.blogspot.comTheoretical physics has problems. That’s nothing new — if it wasn’t so, then we’d have nothing left to do. But especially in high energy phy
 Coinbase Launches 'One-Click' Bitcoin Tipping Toolwww.coindesk.comCoinbase has announced a new micropayments tool it hopes will encourage bitcoin tipping to online content providers.
Fried potatoes were carbonized, probably the oil was a year old...
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Vista assolutamente stupenda!
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Unica nel suo genere, assolutamente da vedere e vivere soprattutto di sera!
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Piacevole atmosfera, ottime le cioccolate calde.
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All'apparenza tutto bello e funzionante e poi...la doccia non funziona e lo scarico del lavandino è intasato. Mi spiace dare solo 2 stelle, ma il bagno DEVE essere funzionante in un albergo. Nota positiva: il letto era enorme e molto confortevole.
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Veramente un gioiello! Il contatto diretto con i ricercatori è ciò che fa la differenza.
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La migliore pizza che abbia mai mangiato nonostante il posto lasci molto a desiderare!
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