Today I Found Out

Why Do Pages of Books and Newspapers Turn Yellow Over Time? (2019x216)

Fecha de emisión: Ago 15, 2019

Check my other channel Hi→→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 Follow Simon on social media: https://twitter.com/SimonWhistler https://www.instagram.com/simonwhistler/ Never run out of things to say at the water cooler with TodayIFoundOut! Brand new videos 7 days a week! More from TodayIFoundOut: The Shockingly Recent Time British Husbands Sold Their Wives at Market https://youtu.be/yZ8wzG0J6NY The Bizarre Story of the Man Who Sold the Moon https://youtu.be/GhRe_x2wByM In this video: When I was a kid, my parents had a collection of historic old, yellowed newspapers. For example, I distinctly remember an old Washington Post newspaper sitting on a bookshelf from July 21, 1969 with the headline “The Eagle Has Landed – Two Men Walk on the Moon.” Or a fading, brownish-yellow one from August 8, 1974 with the big headline, “Nixon Resigns.” These newspapers are fascinating artifacts documenting history, from remarkable moments to the relatively mundane. Unfortunately, they were also hard to read due to the yellowed, brown color and fading print. So why do old newspapers – and books – turn yellow? And is there any way to prevent this from happening? Want the text version? http://www.todayifoundout.com/index.php/2015/03/old-newspapers-book-pages-turn-yellow/ Sources: http://science.howstuffworks.com/question463.htm http://indianapublicmedia.org/amomentofscience/books-turn-yellow-fall/ http://www.conservatree.org/learn/Papermaking/History.shtml https://books.google.com/books?hl=en&lr=&id=NCkXBQAAQBAJ&oi=fnd&pg=PP1&dq=E.+Sj http://en.wikipedia.org/wiki/Wood http://siarchives.si.edu/services/forums/collections-care-guidelines-resources/why-does-paper-yellow http://www.library.illinois.edu/prescons/about_us/faq.html#7 http://www.ipst.gatech.edu/amp/collection/museum_invention_paper.htm https://books.google.com/books?id=EffBZZPXcWwC&printsec=frontcover&dq=Charles+Fenerty+an