Archive for March, 2011

Errata: Über Kräfte: Miniaturen

Thursday, March 31st, 2011

S. 172: Oben, linke Spalte;

S. 172: Mitte, mittlere Spalte;

S. 173: Mitte, mittlere Spalte;

S. 173: Oben, rechte Spalte;

S. 176: Mitte, linke Spalte,

diese Bildbeiträge sind irrtümlicherweise nicht – wie in unserer Publikation (Berlin: Merve, 2014) – angegeben im März 2011 gepostet worden, wir bedauern die Zuordnung. Bei Rückfragen stehen wir gerne zur Verfügung.

 

Sampurna Chattarji: Diagram

Thursday, March 31st, 2011

All points of me magnetised by you.
One half of me tending obliquely towards one half of you.
Cut to the quick, pierced to the core,
Your green heart, an apple, waiting to be bitten.
This, the middle of our lives, here, where it is hottest.

Sampurna Chattarji

Wednesday, March 30th, 2011

Barbara Ellmerer

Attracting Iron

Wednesday, March 30th, 2011

Wrought iron, not magnetized by the loadstone attracts iron. A is cork holding an iron wire reaching a little out of the water; C refers to the end of the second wire, which pulls B. [ZB Magnet 2] William Gilbert, De Magnete (London: Petrus Short, 1600), Zentralbibliothek Zürich, Alte Drucke und Rara, XVI.28, p. 29.
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Thursday, March 24th, 2011

Modelling Deviation with a Globe (Magnetic Stone)

Thursday, March 24th, 2011

[ZB Magnet 2] William Gilbert, De Magnete (London: Petrus Short, 1600), Zentralbibliothek Zürich, Alte Drucke und Rara, XVI.28, p. 158.

Attracting Out

Thursday, March 24th, 2011

Deviation* is due to Earth’s Elevation. Gilbert explains this thesis with his “terrella” (a spheric magnet). He adds mass to the terrella and observes that a needle is “attracted out of the true direction”. [ZB Magnet 2] William Gilbert, De Magnete (London: Petrus Short, 1600), Zentralbibliothek Zürich, Alte Drucke und Rara, XVI.28, p. 157.

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The Art of Measuring Deviation

Tuesday, March 22nd, 2011

The rising and setting of the sun or the moon or stars is observed with a rule, which has two sights (figure above). This rule is connected with a compass rose and needle (figure below). William Gilbert, De Magnete (London: Petrus Short, 1600), Zentralbibliothek Zürich, Alte Drucke und Rara, XVI.28, p. 173.

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Tuesday, March 22nd, 2011

Judith Albert

Tuesday, March 22nd, 2011

Judith Albert