In this Issue

Table of Contents

Preface: Virtual Entities in Science

Robert Harlander, Jean-Philippe Martinez, Friedrich Steinle, Adrian Wüthrich
pp. 263-268
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How to Conceive Virtual Entities: Peirce’s Proposal

Friedrich Steinle
pp. 269-277
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How to Study Virtual Entities Historically? A Proposal

Markus Ehberger
pp. 278-299
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The Eye Stays in the Picture: Virtual Images in Early Modern and Modern Optics

Arianna Borrelli
pp. 300-328
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Real Virtuality and Actual Transitions: Historical Reflections on Virtual Entities before Quantum Field Theory

Alexander S. Blum, Martin Jähnert
pp. 329-349
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Virtuality in Modern Physics in the 1920s and 1930s: Meaning(s) of an Emerging Notion

Jean-Philippe Martinez
pp. 350-371
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The Ghost in the Machine: Metaphors of the ‘Virtual’ and the ‘Artificial’ in Post-WW2 Computer Science

Joseph Wilson
pp. 372-393
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Understanding, Virtually: How Does the Synthetic Cell Matter?

Daphne Broeks, Tarja Knuuttila, Henk de Regt
pp. 394-414
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