Added 2 months ago | 00:02:56 | 1406 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 2 months ago | 00:07:18 | 628 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 2 months ago | 00:06:10 | 1642 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 3 months ago | 00:02:01 | 771 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 4 months ago | 00:21:06 | 804 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 | 28901 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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