Added 30 days ago | 00:02:56 | 859 views
Artichoke Juice, Invisible Ink--a Witchcraft Potion? In September 1656, a female spy based in England wrote to her brother, who was living under exile in Antwerp. She feared their letters were being intercepted, broken into and sealed up...
Added 30 days ago | 00:07:18 | 378 views
By her correspondent’s panic reaction at having lost her letter with the formula for “invisable [sic] ink”, one can safely assume that one female spy had recommended a more sophisticated potion, not plain lemon juice, for secret messages...
Added 30 days ago | 00:06:10 | 1144 views
Giambattista della Porta's "Magiae Naturalis" (1558; 1644 ed. Book 16-Chapter IV) and Thomas Lupton’s “A Thousand Notable Things” (1579) give a step by step description how to secrete letters in eggs: "To put a Shedule, or lytle wrytin...
Added 1 month ago | 00:02:01 | 547 views
Watch our MITemp Lucy Brown demonstrate how to make this quick, easy, and inexpensive book cradle with one Tyvek™ envelope and some recycled air pillows. Book cradles are a type of support that help to reduce stress on the spine of a bo...
Added 3 months ago | 00:21:06 | 535 views
Reengineering broken book spines working group presents this first of many instructional videos that demonstrate the variations of this innovative book conservation treatment. WHO IS INVOLVED AND WHY: Jana Dambrogio, Thomas F. Peterson (...
Added over 4 years ago | 03:02:00 | 28624 views
MIT's 1993 Technology Day, on the theme "Riding the Wave of Innovation: The Ocean and MIT," takes place on June 4, 1993. Speakers featured in the morning symposium include Sylvia Earle, "Exploring the Ocean with Unmanned Vehicles;" Rober...
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