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01-29-2017, 12:08 PM
A gorgeous 1890 postcard tour of the Alpine land of Tyrol
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Sella Joch and Langkofl.
Image: Library of Congress
These postcards of the Princely County of Tyrol, an Alpine region of the Austro-Hungarian empire, were created using the Photochrom process, an early procedure for imbuing mo**chrome images with surprisingly lifelike color.
Developed in the 1880s by an employee of a Swiss printing company, the process involves coating a lithographic limestone tablet with a photosensitive emulsion and exposing it to light under a photo negative.
The light causes the emulsion to harden in proportion to the tones of the negative, forming a fixed lithographic image on the stone. Read more... (http://mashable.com/2017/01/28/photochroms-of-tyrol/?utm_campaign=Mash-Prod-RSS-Feedburner-All-Partial&utm_cid=Mash-Prod-RSS-Feedburner-All-Partial)
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Sella Joch and Langkofl.
Image: Library of Congress
These postcards of the Princely County of Tyrol, an Alpine region of the Austro-Hungarian empire, were created using the Photochrom process, an early procedure for imbuing mo**chrome images with surprisingly lifelike color.
Developed in the 1880s by an employee of a Swiss printing company, the process involves coating a lithographic limestone tablet with a photosensitive emulsion and exposing it to light under a photo negative.
The light causes the emulsion to harden in proportion to the tones of the negative, forming a fixed lithographic image on the stone. Read more... (http://mashable.com/2017/01/28/photochroms-of-tyrol/?utm_campaign=Mash-Prod-RSS-Feedburner-All-Partial&utm_cid=Mash-Prod-RSS-Feedburner-All-Partial)
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