March 30: Difference between revisions

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'''Are You Sure ... (March 30)'''
{{Daily Image/March 30}}{{Preface/March 30}}


{{Are_You_Sure/March_30}}
== Better Than News ==


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{{Better Than News/March 30}}


[[File:Are You Sure (March 30, 2020).png|thumb|left|Screenshot: Are You Sure (March 30, 2020)]]
== Beyond Plausible ==


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{{Beyond Plausible/March 30}}


'''On This Day in History and Fiction'''
== In Other Words ==


{{Selected anniversaries/March 30}}
{{In Other Words/March 30}}
 
== Are You Sure ==
 
{{Are You Sure/March 30}}
 
== Topic of the Day ==
 
{{Daily Favorites/March 30}}

Latest revision as of 10:33, 20 February 2023

Better Than News

Beyond Plausible

In Other Words

Are You Sure

• ... that mathematician Stefan Banach is the namesake of Banach spaces, Banach algebras, the Banach–Tarski paradox, the Hahn–Banach theorem, the Banach–Steinhaus theorem, the Banach-Mazur game, the Banach–Alaoglu theorem, and the Banach fixed-point theorem?

• ... that physicist Charles Vernon Boys achieved recognition as a scientist for his invention of the fused quartz fiber torsion balance, which allowed him to measure extremely small forces, and that Boys made the fused quartz fibers for his instrument by attaching a quartz rod to a crossbow quarrel, heating the rod to the point of melting, and firing the crossbow, and that by this means he produced fiber so thin that it could not be resolved with an optical microscope?

• ... that mathematician Harold Scott "Donald" Coxeter composed music in his youth and was an accomplished pianist at the age of 10, and that Coxeter felt that mathematics and music were intimately related, outlining his ideas in a 1962 article on "Mathematics and Music" in the Canadian Music Journal?

• ... that mathematician Adam Ries wrote several books on practical mathematics, including Rechnung auff der linihen ("Reckoning on the Line", 1518), which describes calculation on a calculating board, a kind of abacus, and that according to the foreword the second edition was expressly intended for children?

Topic of the Day

Art Films