Roberto Poeti Chimica
  • History
  • Science Museum
  • Laboratory Activities
  • Teaching Activity
  • Time Travel
    • America
    • Africa
    • Cina
    • Europa
    • India
    • Indonesia
  • Archive
    • Chemistry Archive
    • Time travel archive
  • Italian
  • English
Roberto Poeti Chimica
  • History
  • Science Museum
  • Laboratory Activities
  • Teaching Activity
  • Time Travel
    • America
    • Africa
    • Cina
    • Europa
    • India
    • Indonesia
  • Archive
    • Chemistry Archive
    • Time travel archive
Monthly Archives

July 2017

CinaTime Travel

The Great Wall of China

by Roberto Poeti 30 July 2017
blank
The great wall covered in snow

It is estimated that the length of the great wall is about 9000 kilometers. It was built from the 3rd century BC (about 215 BC) by Emperor Qin Shi Huang of the Qin dynasty.   It’s the same Emperor to whom we owe the so-called terracotta army in Xian. Sections of the great wall were added in later centuries, but it was during the Ming dynasty in the 14th and reached its current dimensions.  Bricks and stones were used rather than clay, stone and wood.

Continue Reading
30 July 2017 0 comment
0 FacebookTwitterPinterestEmail
AmericaTime Travel

The Skyscrapers of New York

by Roberto Poeti 28 July 2017
blank
Many trips

For the first time this year I visited the United States. I began traveling at age 17, first alone, then, after the age thirty, in company with my wife. We went away for long periods with our backpacks and without programming . So we have known the countries that today would not be possible to visit as we did then. We had never thought to go to the United States. We were looking for countries off the beaten track by tourism . Those countries were also a challenge for us but we faced with enthusiasm. In return we received friendship, hospitality and knowledge of rhythms and habits of life totally different from ours.  For the first time this year I visited the United States.

Continue Reading
28 July 2017 0 comment
0 FacebookTwitterPinterestEmail
HistoryTeaching Activity

The Stereochemistry in the crystals contained in a wine barrel

by Roberto Poeti 25 July 2017
blank
Red crystal formations : thus was born the stereochemistry

I  have kept for many years an old cask in the cellar of my house before deciding to make firewood. Its interior walls, in the dimly lit cellar, seemed covered with blackish storage and amorphous. But when I took her out and was illuminated by sunlight I felt the thrill of discovery. The amorphous layer now appeared made of red crystal formations shaped like shells, which were arranged groups of transparent, colorless prismatic crystals that sparkled like diamonds. It was a unique show.

Continue Reading
25 July 2017 0 comment
0 FacebookTwitterPinterestEmail
blank

PROF. ROBERTO POETI

Hi, my name is Roberto Poeti , a former teacher . I decided to create this blog to continue the dialogue on Chemical Scienze, its history and its teaching and to share the experiences of my trips I’ve done now and in the distant past.
“Even Chemistry is a beautiful journey into the knowledge of the matter“

Search

Categories

  • America
  • Cina
  • Europa
  • History
  • Science Museum
  • Teaching Activity
  • Time Travel

Recent Posts

  • The ancient rural village of Hongcun in China
  • The history of distillation up to the 18th century
  • Chemical Crystallography before X-ray Diffraction
  • A melody of the Viking village
  • Grauballe’s man: the swamp mummy

Archives

  • February 2021
  • January 2021
  • September 2020
  • July 2020
  • March 2020
  • May 2019
  • April 2019
  • November 2018
  • June 2018
  • December 2017
  • November 2017
  • August 2017
  • July 2017
  • June 2017

Back To Top

© 2017 - 2021. Roberto Poeti. All Right Reserved. | Privacy Policy (IT) - Privacy Policy (EN)