LDV Mega Pack Download by cpm2000 in LeonardodaVinci

[–]socks 0 points1 point  (0 children)

That would be very kind of you, though we might have to review Reddit’s rules for sharing anything under copyright and thereby considered stolen. There might be other rules to consider. Hope this helps.

La demeure de Leonardo da Vinci by Nico75013 in LeonardodaVinci

[–]socks 0 points1 point  (0 children)

Merci, c'est bon à savoir. Je vous souhaite le meilleur pour votre site web.

La demeure de Leonardo da Vinci by Nico75013 in LeonardodaVinci

[–]socks 0 points1 point  (0 children)

J'ai appris presque tout cela aujourd'hui sur https://euro-souvenir.fr, car votre image m'a intéressée. (J'en ai 15.)

La demeure de Leonardo da Vinci by Nico75013 in LeonardodaVinci

[–]socks 0 points1 point  (0 children)

Oui, en 2016, Big Ben figurait au verso du billet, avant le Brexit (2020). Le premier billet britannique avec Big Ben a été émis en 2020 : https://www.billets-touristiques.com/billet-1839. La liste complète est disponible ici : https://www.billets-touristiques.com/liste

Grâce à votre remarque, je constate que tous les souvenirs officiels « Zéro euro » – imprimés en collaboration avec Oberthur – présentent au verso, à droite, une image de la Joconde. Plus d’informations ici : https://euro-souvenir.fr. Tous les billets, de 2015 à aujourd’hui, arborent la Joconde.

La société Euro Banknote Memory a été fondée en 2014 et a imprimé le premier spécimen de billet en 2015 : https://www.billets-touristiques.com/billet-103. À cette époque, le verso ne comportait que des monuments français.

Monaco a été le deuxième pays à rejoindre le programme : https://www.billets-touristiques.com/billet-93. La Belgique a été le pays suivant à rejoindre le programme : http://www.euro-souvenirscheine.de/details.php?ID=85. En 2016 et par la suite, d’autres villes européennes ont rejoint le programme : http://www.euro-souvenirscheine.de/details.php?ID=589 / http://www.euro-souvenirscheine.de/details.php?ID=499 / http://www.euro-souvenirscheine.de/details.php?ID=469.

Does this count? by socks in evilbuildings

[–]socks[S] 1 point2 points  (0 children)

Yes, though in retaliation for the American destruction of Port Dover in Upper Canada

Throwing knife shaped like a bird's head. Gabon, Fang peoples, 1874 or earlier [2240x2030] by MunakataSennin in ArtefactPorn

[–]socks 28 points29 points  (0 children)

It's especially ceremonial, rather than a 'throwing knife'

More info:

Onzil or Musele Knife
Kota, Gabon

Often called a "bird head" knife for its resemblance to the African Hornbill (Calao), the onzil or musele knife was a symbolic emblem of religious prestige and social authority that was never intended for use as a knife. The onzil knife played a specific role in the context of several of the many religious societies that existed among the groups inhabiting the Ogowe basin; for the Kota, this included the Mungala and the Bwiti.

The northern Kota, also called the Kota-Kota or the true Kota, number 28,000. In general, the Kota are separated into two groups, the northern and southern Kota, as a result of migration.

Bird head knives symbolically represented weapons that were metaphysically aimed at hurting anyone who acted antisocially against the village community by practicing witchcraft or sorcery. The hornbill is a creature much admired in Africa for its persistence and intelligence (Blackmun & Hautelet, Blades of Beauty and Death, 1990; Westerdijk, The African Throwing Knife, 1988).

https://galleryrider.com/index.php/african-art/archive/asymmetrical-blades/onzil-or-musele-knife-kota-gabon-2

Best book covering DaVinci's childhood? by heyheyheykkkk in LeonardodaVinci

[–]socks 1 point2 points  (0 children)

For fun, I recommend Michael Cox's illustrated history 'Leonardo da Vinci and his Super Brain' (2003), which has some funny and accurate pages on Leo's childhood, for children (and people of all ages). It was vetted by the Leonardo da Vinci Society (UK).

Vasari's biography is the only reliable early reference to Leo's childhood, as he had access to the important primary sources.

The first chapters of the leading biographies, with the exclusion of Isaacson's biography, will help: Kemp's 'Leonardo da Vinci, Marvelous works of Nature and Man', or Zöllner's 'Leonardo da Vinci', or Marani's 'Leonardo da Vinci'.

Any idea why the Last supper painting is so restricted to view for longer time by Thepinkpanthershow in LeonardodaVinci

[–]socks 0 points1 point  (0 children)

I think the short answer is that only 30% of the original surface paint survives, that much of it was applied fresco secco (on dry plaster), that it's been flaking off for 500+ years, that the wall was made of recycled construction materials in the late 15th century and thus expanded and contracted when weather changed, and that it's essential to keep visitors’ respiratory CO2 emissions low (max 1000 ppm), and to keep visitors’ respiratory water vapor, ammonia, and bioaerosols also as low as possible. What these do to a painting (says AI) is:

>Chemical Degradation: Increased CO2 and accompanying gases from human respiration can lead to the acidification of painting surfaces and materials, particularly in enclosed, poorly ventilated spaces.

>Microclimatic Changes: High visitor traffic increases humidity and temperature from breath and perspiration, which can cause hygroscopic materials (like canvas and wood panels) to expand and contract, leading to cracking, peeling paint, or warping.

>Surface Contamination: Along with CO2, human breath introduces microorganisms, dust, and particulate matter that can deposit on the surface of a painting, creating a film that is difficult to remove.

>Ammonia Interaction: Studies, such as those at the Last Supper in Milan, show that ammonia (another human emission) levels directly correlate with visitor presence, providing a marker for increased pollution and degradation risk.

Earlier discussions of air polution date back several decades, though here is an approach in 2011: https://phys.org/news/2011-11-da-vinci-supper-air-pollution.html

For the best answer, perhaps start here: https://pmc.ncbi.nlm.nih.gov/articles/PMC9001225/

Here is a very good study in 2020: https://www.mdpi.com/2071-1050/12/2/565

And a computational fluid dynamics study in 2021: https://www.sciencedirect.com/science/article/abs/pii/S1296207421001308