The Christmas Ball version of Pardies’ Celestial Globe is now available!
Merry Christmas and a Wonderful 2014!
The Christmas Ball version of Pardies’ Celestial Globe is now available!
Merry Christmas and a Wonderful 2014!
[diameter of the Celestial Globe: 25 cm]
Visit the David Rumsey Map Collection website to admire and download Pardies’ star and constellation maps. Another great website with a lot of information about Pardies’ masterpiece is Atlas Coelestis (sorry, mostly in Italian…).
If you have already downloaded the Globe project (before Dec. 3), but you are not satisfied by the final result because Pole holes are not well defined, download the Pole Caps for improving your model.
Stay tuned! Christmas Ball version of Pardies Celestial Globe in progress…
[25x30x40 cm, 165 parts, about 50Mb]
The Mechanism. WAP is a paper automaton whose main mechanism is Redtenbacher`s variation of the Cartwright straight-line mechanism, a twin gear driving a common slider crank. If the two gears have different but almost equal number of teeth, the up and down motion of the bar is then an addition and subtraction of two sinusoidal functions. The straight line generation, determined by the vertical motion of the bar, was a very important problem in the early history of mechanics. In WAP, the “random” motion of the unlucky airplane is generated at the center of the beam, that is free to spin. At that point, the two sinusoidal movements originate the oscillation that, together with the up and down motion of the bar, results in the air-pocket-like shaking up.
(further information at http://kmoddl.library.cornell.edu/index.php)
The main mechanism in WAP is based on two gears with ratio equal to 1.2 (18/15 teeth). The entire cycle is completed after five turns of the handle.
Ferdinand Redtenbacher (1809-1863). The transformation of mechanical technology from a mainly workshop-based profession into an engineering science, particularly in the area of design of machines and mechanisms, is closely related with the name of Ferdinand Redtenbacher. He was of eminent historical importance for the evolution of mechanical engineering to a technical science in the nineteenth century. Redtenbacher’s role as the originator of mechanical engineering as a science in Germany is fundamental and of general interest since the introduction of science into engineering is a “sine qua none” for the development of a powerful high tech industry. As a professor and the director of the Polytechnic School in Karlsruhe, Germany – today the University of Karlsruhe (TH) –, Redtenbacher’s influence therefore helped establish the German manufacturing systems engineering even today. (from Wauer, J., Mauersberger, K., Moon, F. C., 2010. Ferdinand Jakob Redtenbacher (1809–1863), in Distinguished Figures in Mechanism and Machine Science, History of Mechanism and Machine Science, Ceccarelli, M. Ed., Springer Netherlands).
Years ago, paper modellers community was very excited by the so called hako designs, small paper figures mainly made of boxy parts assembled together. There was a bloom of paper hakos, some of them truly exquisite. As many others, I designed some hako models, too.
Dracula was the first one…
Petrus Plancius (Pieter Platevoet, 1552-1622) was a famous Flemish cartographer. He included new constellations in the austral celestial emisphere. In 1612, he drew 12 gores for a 14.5 cm diameter celestial globe, with eight new constellations inspired to the Bible. For the present model, the original gores published in 1649, were downloaded from the Bibliothèque nationale de France website. The colours of the original file were digitally converted in the “nocturnal” version here presented.
Petrus Plancius (Pieter Platevoet, 1552-1622) fu un famoso cartografo fiammingo. Autore di numerosi globi celesti, egli introdusse nuove costellazioni nell’emisfero australe. Nel 1612 disegnò 12 fusi per un piccolo globo celeste del diametro di 14.5 cm, in cui compaiono otto nuove costellazioni ispirate alla Bibbia. Per questo modello, i fusi originali, pubblicati nel 1649, sono quelli scaricabili dal sito web della Bibliothèque nationale de France. Con un semplice processo di ridefinizione della gamma cromatica, i fusi sono stati trasformati nella versione “notturna” qui proposta.
In 1922-23, LA Times newspaper offered to its readers a series of animated cards by Dan Rudolf to cutout and assemble.
Some years ago (maybe in 2007) I downloaded these cards from the Barnacle Press site, a web archive dedicated to vintage comic strip, dating from the turn of the last century.
Since August 2012, after a site crash, the Barnacle Press is recreating part of the image archive that was lost when the site went down. The archive comprises 27 animated cards in the section Papercraft of the Comic Supplement page, but the resolution is now lower than it was in 2007.
Fortunately, recently I have discovered the Christine Nelson Flickr collection with 39 hi-res. LA Times animated cards. So, the fans of these fascinating vintage cards have a wonderful opportunity…
In the meantime, enjoy the colored (by myself) version of the Santa and his favourite Reindeer (Rudolf?… but, what about his red noise?)
Nel periodo 1922-23, il quotidiano Los Angeles Times offrì ai suoi lettori una serie di cartoline animate disegnate da Dan Rudolf da ritagliare ed assemblare.
Alcuni anni fa (forse nel 2007) ho scaricato queste cartoline dal sito Barnacle Press, un archivio web dedicato ai fumetti d’inizio secolo. Dallo scorso agosto, dopo un crash del sito, il Barnacle Press sta ricostituendo parte dell’archivio immagini perduta. L’archivio contiene 27 cartoline animate nella sezione Papercraft della pagina Comic Supplement, ma la risoluzione delle immagini è più bassa di quella del 2007.
Fortunatamente, recentemente ho scoperto la collezione Flickr di Christine Nelson con 39 cartoline animate del Los Angeles Times. Beh, i fan di queste affascinanti cartoline vintage hanno una meravigliosa opportunità…
Nel frattempo, godetevi questa versione colorata (da me) di Babbo Natale con la sua renna preferita (Rudolf?… ma non ha il naso rosso…).
Giovanni Maria Cassini (1745-1824) was regarded as one of the last great Italian globemakers of the 18th century. Here, I present two 15 cm diameter globes in a Christmas ornament version. The larger version of the terrestrial globe was already proposed in my previous post. The celestial globe is a new entry. The hi-res. digital reproduction of the twelve gores and the two polar calottes are available at the wonderful David Rumsey Map Collection website, that is really worth of visiting. The celestial globe gores were published in 1792 in Rome. They were based upon the astronomical observation of Flamsteed and Lacaille, and depict all known constellations with stars varying in size according to their magnitude.
Anothe great web site where you can get a lot of information about this and many other celestial globes and maps is Atlas Coelestis by F. Stoppa. Unfortunately, the site is in Italian only, but the number of wonderful picture is so large that I suggest to visit it.
Giovanni Maria Cassini (1745-1824) è considerato uno degli ultimi grandi costruttori italiani di globi del 18° secolo. In questo post presento due globi da 15 cm di diametro in versione natalizia. Una versione più grande del globo terrestre è stata già presentata nel post precedente; il globo celeste è una new entry. Le riproduzioni digitali ad alta risoluzione dei dodici fusi e delle due calotte polari sono scaricabili dal meraviglioso sito web della David Rumsey Map Collection, che vale veramente la pena di visitare.
I fusi per il globo celeste vennero pubblicati a Roma nel 1792. Essi sono basati sulle osservazioni astronomiche di Flamsteed e Lacaille, e raffigurano tutte le costellazioni allora conosciute con stelle di grandezza variabile a seconda della loro magnitudo.
Un altro imperdibile sito web pieno di informazioni su questo e molti altri globi e mappe celesti è l’Atlas Coelestis di F. Stoppa.
Giovanni Maria Cassini (1745 – 1824) fu un costruttore di globi, geografo, incisore e cartografo italiano. La sua opera principale fu il Nuovo Atlante Geografico Universale del 1792-1801. Nel 1790 la Calcografia Camerale di Roma pubblicò I suoi dodici fusi per globo terrestre, aggiornato secondo le ultime rilevazioni effettuate durante I tre viaggi attorno al mondo del Capitano inglese James Cook.
Per questo progetto ho usato i 12 fusi ad alta risoluzione scaricabili dal sito della Library of Congress (USA) (Geography and Map Division).
Il globo ha 30 cm di diametro, ed è fatto completamente di carta, eccetto l’asse di rotazione che è costituito da un tondino di legno di 6 mm di diametro. Nel progetto originale ho usato carta da 210 g/mq e per il globo ed i rivestimenti carta fotografica lucida. Il progetto include istruzioni dettagliate in italiano ed inglese.
L’adattamento naturale mira a fornire le prestazioni migliori, anche se non per ogni esigenza. Sono rimasto colpito dalla postura di questo modello 3D, che cattura gli sforzi della giraffa nel raggiungere la fonte primaria di vita: l’acqua.
Dimensioni (mm): Alt. 250, Lung. 434, Larg. 240
Medium: carta 160 g/m2
Difficoltà (1-5): 4
Modello ritopologizzato ed adattato dall’originale modello 3D disponibile sul sito “INRIA Gamma team research database Website Collections”. Texture di struckdumb. Ambientazione: fotografia modificata dall’originale “Times Square” di Martin Duerr. --
An hour’s drive from Rostov, vast wheat fields welcome visitors to Zernograd, as do a couple of relics of the old Soviet days: a hammer-and-sickle monument and a statue of Lenin. Zernograd became a showpiece of the Soviet collectivized farm system with help from American sympathizers who arrived in the 1920s with U.S. tractors and combines. Now, the town is again in the vanguard of Russian agriculture.
[Thurow, Roger. "Grain Drain: New Farm Powers sow the Seeds of America's Agricultural Woes. " Wall Street Journal, 18 June 2004, sec. A1.]
Retopologized and adapted by paperPino from the original 3D model by Alexander Lvov
Merry Christmas and Happy 2012
Buon Natale e Felice 2012
Try ElfYourself at: http://elfyourself.jibjab.com
As Tom Mitchell said:
This is the perfect thing to have at work for when I need a “mental health moment”.
Released year: 2005
Thank you michael42er!
The transMediterranean oceanographic cruise on board of the research vessel Meteor gave me the opportunity to meet (and to share the cabin with) Fernando Rozada, a skilled bio/chem technician working in Vigo (Spain), but he comes from the region of Castilla y Leon, or, as he prefers to say, from Leon. During the cruise we discovered that Fernando is a talentuous comics writer, too. He condensed our Mediterranean adventure in few funny strips, capturing with humour some of the topic events of the cruise.
So, enjoy the art of Fernando Rozada.
Thank you Fernando!
From 5 to 28 April 2011 I will be on board of the German research ressel METEOR for a transMediterranean cruise. The principal scientific objective of the cruise (code M84/3) has two closely-linked components: understanding and documenting the large-scale Mediterranean water property distributions, their changes and drivers of those changes, and addressing questions of a future Mediterranean Sea that will increase in dissolved inorganic carbon, might become more stratified and experience changes in circulation and ventilation processes due to global warming. [from Meteor M84 Booklet, ed.: Institut fur Meereskunde Universitat Hamburg]
In the picture above the planned cruise track is depicted. Oceanographic stations are marked with different colors, according to the scientific activity planned.
This is one of the simplest machines designed by Leonardo in order to improve the human performance. A lever connected to the hammer is moved by means of an eccentric cam. At each turn of the handle, the hammer gives a stroke. As a matter of fact, the real hammer is supposed to be powered by a water paddle-wheel. An implementation with a paddle-wheel powered by sand is planned for the next future.
Released on 2nd February 2006, WitS is my biggest and the most complex paper automaton I ever designed.
On 16 September 2005, the automaton Sweet Dreams was launched on the web. At that time, it was considered the first paper automaton employing the mechanism called Geneva stop.
The Geneva stop (or Geneva drive) is a mechanism that translates a continuous rotation into an intermittent rotary motion. It is an intermittent gear where the drive wheel has a pin that reaches into a slot of the driven wheel and thereby advances it by one step. The drive wheel also has a raised circular blocking disc that locks the driven wheel in position between steps. The name derives from the device’s earliest application in mechanical watches, Switzerland and Geneva being an important center of watchmaking. One application of the Geneva drive is in movie projectors: the film does not run continuously through the projector. Instead, the film is advanced frame by frame, each frame standing still in front of the lens of 1/24th of a second. (from Wikipedia)
This is a study for a life-size model that maybe in the future I will build. It measures mm 300x221x408. The 3D model was prepared after re-topologization of a model downloaded from the “INRIA Gamma team research database Website Collections”
Here, in the Northern Hemisphere, is winter. But do not forget that in the other half of our Earth is summer, with warmy and sunny days! So, as the first post of my new site, I decided to add an old webpage illustrating the procedure for a fantastic tomato souce, together with a delicious Italian recipe. Enjoy them!
Nel nostro emisfero è inverno, ma non dimentichiamoci che nell’altra metà della nostra Terra è estate, con tanti giorni caldi ed assolati! Come primo post ho quindi pensato di aggiungere una mia vecchia pagina web che illustra la procedura per ottenere una fantastica salsa di pomodoro, assieme ad una deliziosa ricetta italiana. Gustatele entrambe!
Click to the Tomato Souce Webpage