La tavolozza dell'artista tra passato e presente - Il ruolo della chimica nel...Concetta Lapomarda
Nel ppt è presentata solo una parte del lavoro di tesi realizzato.
Nel laboratorio didattico, è importante evidenziare come lo sviluppo tecnologico abbia influito sulla produzione dei pigmenti. Sono mostrate le istallazioni per realizzare il verdigris, a partire da rame e aceto, e diverse soluzioni che cambiano colore per sottolineare come, grazie alla chimica, si possano ottenere tanti colori diversi.
La parte finale, si compone di una esperienza diretta per mettere in luce anche le diverse caratteristiche del prodotto ottenuto. Punto chiave è il confronto finale che evidenzia come l'uso della pasta acrilica, preparata grazie al progresso tecnologico, permetta di avere un risultato migliore sotto diversi punti di vista.
La tavolozza dell'artista tra passato e presente. Il ruolo della chimica nell...Concetta Lapomarda
Partiamo da tre dipinti di tre artisti diversi. In ognuno di essi osserviamo il bianco, un bianco fatto da tre pigmenti diversi.
Leggendo «Alchimie nell'arte», libro finalista del Premio Galileo 2014, mi sono resa conto del ruolo della chimica nella realizzazione dei pigmenti.
Oggi è semplice cimentarsi in un dipinto. Basta prendere un supporto, tubetti di colore e pennelli; non dobbiamo preoccuparci di mescolare il pigmento con il giusto legante, di dover comprare un colore che sia più costoso dell’oro o di rischiare un serio avvelenamento da metalli pesanti: sono tutti problemi che la chimica ha risolto.
Partendo da quest’idea ho sviluppato questo lavoro che ho preparato come tesi finale del Master in Comunicazione delle Scienze dell’Università degli Studi di Padova.
Medicina, astronomia, tecnologia, genetica e antropologia. Queste sono le categorie degli argomenti scelti per "Gioca con la scienza", il poster-gioco presentato in occasione della #ndr14.
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
La tavolozza dell'artista tra passato e presente - Il ruolo della chimica nel...Concetta Lapomarda
Nel ppt è presentata solo una parte del lavoro di tesi realizzato.
Nel laboratorio didattico, è importante evidenziare come lo sviluppo tecnologico abbia influito sulla produzione dei pigmenti. Sono mostrate le istallazioni per realizzare il verdigris, a partire da rame e aceto, e diverse soluzioni che cambiano colore per sottolineare come, grazie alla chimica, si possano ottenere tanti colori diversi.
La parte finale, si compone di una esperienza diretta per mettere in luce anche le diverse caratteristiche del prodotto ottenuto. Punto chiave è il confronto finale che evidenzia come l'uso della pasta acrilica, preparata grazie al progresso tecnologico, permetta di avere un risultato migliore sotto diversi punti di vista.
La tavolozza dell'artista tra passato e presente. Il ruolo della chimica nell...Concetta Lapomarda
Partiamo da tre dipinti di tre artisti diversi. In ognuno di essi osserviamo il bianco, un bianco fatto da tre pigmenti diversi.
Leggendo «Alchimie nell'arte», libro finalista del Premio Galileo 2014, mi sono resa conto del ruolo della chimica nella realizzazione dei pigmenti.
Oggi è semplice cimentarsi in un dipinto. Basta prendere un supporto, tubetti di colore e pennelli; non dobbiamo preoccuparci di mescolare il pigmento con il giusto legante, di dover comprare un colore che sia più costoso dell’oro o di rischiare un serio avvelenamento da metalli pesanti: sono tutti problemi che la chimica ha risolto.
Partendo da quest’idea ho sviluppato questo lavoro che ho preparato come tesi finale del Master in Comunicazione delle Scienze dell’Università degli Studi di Padova.
Medicina, astronomia, tecnologia, genetica e antropologia. Queste sono le categorie degli argomenti scelti per "Gioca con la scienza", il poster-gioco presentato in occasione della #ndr14.
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
This article is all about what AI trends will emerge in the field of creative operations in 2024. All the marketers and brand builders should be aware of these trends for their further use and save themselves some time!
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Applitools
During this webinar, Anand Bagmar demonstrates how AI tools such as ChatGPT can be applied to various stages of the software development life cycle (SDLC) using an eCommerce application case study. Find the on-demand recording and more info at https://applitools.info/b59
Key takeaways:
• Learn how to use ChatGPT to add AI power to your testing and test automation
• Understand the limitations of the technology and where human expertise is crucial
• Gain insight into different AI-based tools
• Adopt AI-based tools to stay relevant and optimize work for developers and testers
* ChatGPT and OpenAI belong to OpenAI, L.L.C.
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
This article is all about what AI trends will emerge in the field of creative operations in 2024. All the marketers and brand builders should be aware of these trends for their further use and save themselves some time!
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Applitools
During this webinar, Anand Bagmar demonstrates how AI tools such as ChatGPT can be applied to various stages of the software development life cycle (SDLC) using an eCommerce application case study. Find the on-demand recording and more info at https://applitools.info/b59
Key takeaways:
• Learn how to use ChatGPT to add AI power to your testing and test automation
• Understand the limitations of the technology and where human expertise is crucial
• Gain insight into different AI-based tools
• Adopt AI-based tools to stay relevant and optimize work for developers and testers
* ChatGPT and OpenAI belong to OpenAI, L.L.C.
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...
A spasso nella storia con i pigmenti
1. A spasso nella storia
con i pigmenti
Concetta Lapomarda
da "La tavolozza dell'artista
tra passato e presente.
Il ruolo della chimica
nella produzione dei pigmenti"
2. Glaucofane
[Na2] [Mg3Al2] (Si8O22) (OH)2
ORIGINE DEL NOME
Dal greco γλαυκός φαίνεσθαι (glauco
phainestai, "apparire celeste") in allusione
al suo colore
PREPARAZIONE
Macinare il minerale
Ocra gialla
FeO (OH) · nH2O
ORIGINE DEL NOME
Dal greco ὠχρός (ōchrós, "giallo")
PREPARAZIONE
Macinare, lavare e asciugare il
minerale stesso
Paleolitico
3. Terra rossa
Fe2O3
ORIGINE DEL NOME
Dal greco αἶμα (hàima "sangue"); infatti,
secondo il filosofo grecoTeofrasto, è
sangue solidificato1
PREPARAZIONE
Macinare, lavare e asciugare il minerale
Bianco di calce
CaCO3
ALTRI NOMI
Bianco di Firenze, Calce spenta, Gesso di
Firenze
PREPARAZIONE
Cuocere il calcare a 900 °C, idratarlo,
diluirlo in acqua e infine setacciarlo2
Paleolitico
1 Mindat - database di mineralogia, http://www.mindat.org/min-1856.html (consultato il 2
dicembre 2014)
2 G. Montagna, I Pigmenti, prontuario per l’arte e il restauro, Nardini, Firenze 1993, scheda 27
4. Nero di carbone
C + impurità
ALTRI NOMI
Nero di quercia, Nero di susino
PREPARAZIONE
Macinare il carbone di quercia o
di rovere
Paleolitico
5. Blu egiziano
CaO·CuO·4SiO2
CURIOSITÀ
È stato il pigmento più studiato
dell’antichità
PREPARAZIONE
Fondere sabbia, una fonte di rame,
carbonato di calcio e carbonato di sodio
a 800° C per diverse ore
Litargirio
PbO
TOSSICITÀ
Provoca il saturnismo, malattia causata
dal piombo e dai suoi composti
CURIOSITÀ
Se riscaldato a 400 °C si trasforma in
minio, pigmento di colore rosso.
Dalla Cultura Egizia a quella
Greca e Latina
6. Cinabro
HgS
TOSSICITÀ
A causa della presenza di mercurio, è un
pigmento tossico per inalazione
PREPARAZIONE
Se naturale, macinare il minerale
corrispondente
Bianco di
piombo
2PbCO3·Pb (OH)2
TOSSICITÀ
Come il litargirio provoca il saturnismo
PREPARAZIONE
Se naturale, si trova in natura come
idrocerussite
Dalla Cultura Egizia a quella
Greca e Latina
7. Nero fumo
C amorfo
NOME ANTICO
Altramento
CURIOSITÀ
Bastoncini di nero fumo sono stati
utilizzati in tutte le epoche per realizzare
i disegni preparatori dei dipinti
Dalla Cultura Egizia a quella
Greca e Latina
8. Blu oltremare
3Na2O·Al2O3·6SiO2·2NaS
Giallo Marte
Fe2O3·nH2O+Al2O3
NOME ANTICO
Crocus Martis
PREPARAZIONE
Far precipitare un sale solubile di ferro e
un sale di allume con una sostanza
alcalina, lavare e asciugare4
ORIGINE DEL NOME
Il nome deriva dalla sua provenienza:
Siria, Palestina, Egitto, tutti luoghi
oltremare
CURIOSITÀ
Il suo prezzo, spesso, superava quello
dell'oro3
Medioevo
4 G. Montagna, I Pigmenti, prontuario per l’arte e il restauro, Nardini, Firenze 1993, scheda 68
3 P. Ball, Colore. Una biografia. Tra arte, storia e chimica, la bellezza e i misteri del mondo del
colore. , BUR, Milano 2001, pp. 127-130
9. Minio
Pb3O4 (2PbO·PbO2)
ORIGINE DEL NOME
Il suo nome deriva probabilmente dal
luogo di estrazione: il fiume Minus nel
nordovest della Spagna
CURIOSITÀ
Era uno dei pigmenti più usati nelle
miniature, infatti "miniatura" e
"miniatore" derivano da qui
Bianco di
San Giovanni
CaCO3
ALTRO NOME
Bianco di Cennini
CURIOSITÀ
È formato da cristalli di calcite micro- e
nanometrici che assorbono e riflettono la
luce in modo considerevole
Medioevo
10. Nero di grafite
C
ORIGINE DEL NOME
Dal greco γράφω (gráphō, "scrivo")
CURIOSITÀ
Era chiamato "mica dei pittori" per il suo
aspetto lamellare e per la sua
caratteristica di lasciare tracce su carta
Medioevo
11. Blu di smalto
[SiO2 (65%), K2O (15%),
Al2O3 (5%), CoO (10%)]5
Giallo di
Napoli
Pb3(SbO4)2
NOMI ANTICHI
Giallorino, Giallolino
CURIOSITÀ
È stato ritrovato nei vetri egiziani della
XIX dinastia
(circa XIII secolo a.C.)
ALTRI NOMI
Smaltino,Vetro di cobalto, Azzurro di
vetro, Blu imperiale
PREPARAZIONE
Fondere una miscela di quarzo, ossido di
cobalto e carbonato di potassio con sali
di alluminio
Rinascimento
5 G. Montagna, I Pigmenti, prontuario per l’arte e il restauro, Nardini, Firenze 1993, scheda 16
12. Realgar
As4S4
CURIOSITÀ
Realgar, nome che deriva dall’arabo rahj
al ghar, "polvere di miniera"
TOSSICITÀ
A causa della presenza di arsenico è un
pigmento particolarmente tossico6
Rinascimento
N.B. Quando il nero e il bianco non sono
indicati, vuol dire che i più diffusi sono gli
stessi dei periodi precedenti
6 Mineral Data - database di mineralogia, http://webmineral.com/data/Realgar.shtml
(consultato il 2 dicembre 2014)
13. Blu di Prussia
KFeIII[FeII(CN)6] e
Fe4
III[FeII(CN)6]3
7
Giallo di
cadmio
CdS + ZnO
ALTRI NOMI
Giallo Brillante, Giallo Aurora
PREPARAZIONE
Se naturale, deriva dalla macinazione
dal minerale greenockite
ALTRI NOMI
Blu di Berlino, Blu Cinese
CURIOSITÀ
È stato prodotto accidentalmente nel
1724 nel processo di ossidazione del ferro
Dal 1700 al 1800
7 G. M. Negrin, Il blu di Prussia dei Gabinetti cinesi di Villa della Regina (TO); caratterizzazione e
sintesi chimica di simulazione, Tesi triennale 2004-2005 – Università degli Studi di Padova, p. 20
14. Rosso di
cadmio
CdS
CURIOSITÀ
È stato prodotto a partire dal 1919
ALTRI NOMI
Rosso selenio, Cadmio scarlatto
Bianco di zinco
ZnO
ALTRI NOMI
Fiori di zinco, Lana Filosofica,
Bianco Cinese
CURIOSITÀ
Era conosciuto già nel Medioevo come
lana filosofica, ma mai utilizzato come
pigmento
Dal 1700 al 1800
15. Ciano
C32O18N8
Giallo primario
CdS + ZnO
ORIGINE DEL NOME
Dal francese antico jalne,
dal latino galbĭnus ("giallo")
COMPOSIZIONE
A base di Giallo Hansa 10 G e
Giallo Hansa G
ORIGINE DEL NOME
Dall'inglese cyan, dal greco
κύανoς (kýanos "azzurro")
COMPOSIZIONE
Colore a base di ftalocianina beta, un
composto organico
1900
16. Magenta
C20H12N2O2
CURIOSITÀ
È stato realizzato nel 1859 da
François-EmmanuelVerguin ossidando
l'anilina
PREPARAZIONE
Calcinare la cerussite o arrostire il
piombo metallico
Bianco di titanio
TiO2+CaSO4+BaSO4
ALTRI NOMI
Titanox,Titanium White
CURIOSITÀ
È usato per rendere bianchi numerosi
prodotti di uso quotidiano come carta,
plastica e dentifricio
1900
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