Visby lenses - Wikipedia
WEBThe Visby lenses are a collection of lens -shaped manufactured objects made of rock crystal (quartz) found in several Viking graves on the island of Gotland, Sweden, and dating from the 11th or 12th century.
The Visby Lenses: what if? – Scandinavian Archaeology
WEBAug 24, 2022 · The Visby lenses are a collection of high-quality optical lenses found on the Swedish island of Gotland, in 1999. They are named after the city of Visby, the largest city in Gotland, though most of them come from the region of Fröjel.
Viking Lenses from Visby, Sweden
WEBThe lenses became widely known as Visby lenses, after the major town on Gotland. The team of three scientists arrived there in 1997 to make a surprising discovery concerning the Viking Age technology.
Visby lenses - Wikiwand
WEBThe Visby lenses are a collection of lens -shaped manufactured objects made of rock crystal (quartz) found in several Viking graves on the island of Gotland, Sweden, and dating from the 11th or 12th century.
Invention of optical instruments
WEBThe 'Visby Lenses'. The so-called Visby Lenses are a set of quartz lenses found in several Viking graves on the island of Gotland, Sweden. They have been dated to the 11th or 12th century. The processing of rock crystal was evidently quite common at …
Ancient lenses - Hati and Skoll Gallery
WEBJan 14, 2016 · Figure 1 is an example of a quartz lens excavated in the Viking harbor town of Fröjel, Gotland, Sweden 1999. These “Visby lenses” appear to have been produced turning on pole lathes. The lens of Figure 1 is encased in a beautiful silver mount, which may have been created later.
History Of Eyewear: Antiquity To 1499 | The Optical Journal
WEBJun 23, 2021 · Circa 1000-1100s: Visby Lenses: On the Viking island of Gotland in Sweden, there was a lens-making industry using highly polished quartz crystals. A few samples are of extremely advanced and precise bi-aspheric curvatures which were not matched until the early 20th century.
BBC News | SCI/TECH | Did the Vikings make a telescope?
WEBApr 5, 2000 · The Vikings could have been using a telescope hundreds of years before Dutch spectacle makers supposedly invented the device in the late 16th century. This remarkable possibility has emerged from a...
Measuring Up: From Aspheres to Education - Photonics
WEBThe first lenses shown to have aspheric surfaces were discovered in several Viking graves on the island of Gotland in Sweden. Known as the Visby lenses, the rock crystal lenses date to the 11th or 12th century, according to “The Eye in History” by Frank Joseph Goes.
Minerals of the Vikings | Rock & Gem Magazine
WEBFeb 3, 2018 · One example is optical lenses cut from rock crystal. These so-called “Visby lenses”, which have been found in several Viking burial sites, take their name from a museum in Visby, Sweden, where many are displayed. Visby lenses are about 2 …
- Some results have been removed