Papers by Dietrich Matthes
Antiquarian Horology No. 3, vol. 44, 2022
This article analyses Leonardo da Vinci’s drawings relating to spring-driven clocks including the... more This article analyses Leonardo da Vinci’s drawings relating to spring-driven clocks including the associated texts based on recent transcriptions. This allows gaining insights into the fore-front of spring-driven clock-making technology in the late fifteenth century. It is being discussed how the challenges of the then still rather new technology were tackled and how the visionary artist developed ideas that were implemented during the following decades and centuries. To this end, interpretations of several of his mechanisms that were not discussed in the context of horology so far are given. Leonardo’s description of spring-making is confirmed by sixteenth- century clocks; differences to eighteenth-century practices are discussed.
Antiquarian Horology, N. 2 vol. 43, June, 2022
This article analyses Leonardo da Vinci’s drawings relating to spring-driven clocks including the... more This article analyses Leonardo da Vinci’s drawings relating to spring-driven clocks including the associated texts based on recent transcriptions. This allows gaining insights into the fore-front of spring-driven clock-making technology in the late fifteenth century. It is being discussed how the challenges of the then still rather new technology were tackled and how the visionary artist developed ideas that were implemented during the following decades and centuries. To this end, interpretations of several of his mechanisms that were not discussed in the context of horology so far are given. Leonardo’s description of spring-making is confirmed by sixteenth- century clocks; differences to eighteenth-century practices are discussed.
ChronoHype Magazin No. 4, 2021
Book review (in German) of a book on the Renaissance drum watch in the Germanisches Nationalmuseu... more Book review (in German) of a book on the Renaissance drum watch in the Germanisches Nationalmuseum in Nuremberg (Germany) that has variously been ascribed to Peter Henlein
Horlogerie Ancienne, Revue N. 86, 2019
We describe in detail two 15th century gothic domestic clocks in the Musée Charles VII in Mehun s... more We describe in detail two 15th century gothic domestic clocks in the Musée Charles VII in Mehun sur Yèvre. One of them is remarkable for being one of the very few courtly domestic clocks with exceptionally lavish decoration. The other one is unique in maintaining its original curved foliot with curved pallets. Text in French language.
NAWCC Watch & Clock Bulletin , 2019
We examine the transition from clocks to watches with specific analysis of the early watchmaker P... more We examine the transition from clocks to watches with specific analysis of the early watchmaker Peter Henlein. Further analysis of the number of watchmakers in two horological centres shows that the transition from making watches as a luxury item to a mass market product which found an interested clientele for its practical uses happened around 1520 - 1550.
Antiquarian Horological Journal, 2019
We investigate several early Nuremberg clocks and archival evidence for clockmaking in the 14th t... more We investigate several early Nuremberg clocks and archival evidence for clockmaking in the 14th to 16th centuries. This allows us to corroborate several hypotheses about dissemination of horological knowledge in the sixteenth century and gain new insights on well-known clockmakers
Euro zone banks have significant holdings of domestic sovereign debt, inducing a close sovereign-... more Euro zone banks have significant holdings of domestic sovereign debt, inducing a close sovereign-bank nexus that endangers financial stability. We present a suggestion of how to break this nexus, which does not involve pooling and/or tranching and is fully consistent with standard Basel capital requirements. At the same time, it does not require capital provision for sovereign portfolios held as collateral for liquidity operations with the lender of last resort (LOLR). Rather, it differentiates between the purpose of collateral for LOLR liquidity operations and the individual investment decision of which sovereign debt to hold. In this way, ourmethodology is market-driven and can foster financial integration in Europe.
Antiquarian Horology, 2017
We give an overview of the role of the mechanical clock in the development of scientific astronom... more We give an overview of the role of the mechanical clock in the development of scientific astronomy up to the end of the sixteenth century. Specific attention is paid to indication accuracy of clocks for this purpose. We present the earliest currently known watch with a minute hand and with reading accuracy up to 10 seconds as well as the earliest and often overlooked archival note on a timepiece with a seconds hand. Furthermore we calculate and discuss the impact of indication accuracy on observation accuracy. We focus mostly on indication accuracy first, movement accuracy of the clocks is discussed at the end.
Jahresschrift der Deutschen Gesellschaft für Chronometrie, 2016
Overview of current research situation on the watch- and clockmaker Peter Henlein (approx. 1480 -... more Overview of current research situation on the watch- and clockmaker Peter Henlein (approx. 1480 - 1542) (in German)
Antiquarian Horology, 2015
In this article we give an overview of watchmaking at the time of Peter Henlein in the rst half ... more In this article we give an overview of watchmaking at the time of Peter Henlein in the rst half of the sixteenth century. We present a stackfreed mechanism that is signi cantly older than previously known pieces and hence brings forward the possible development of at watches to the rst third of the sixteenth century. We investigate the pricing structure of clocks and watches from Nuremberg between 1521 and 1541 and present archival evidence to link a remarkable timepiece in the British Museum to the famous early watchmaker Peter Henlein of Nuremberg
In this paper, we use a definition of the Debye screening mass in SU(2) pure gauge theory at high... more In this paper, we use a definition of the Debye screening mass in SU(2) pure gauge theory at high temperature in 3+1 dimensions, that makes use of the walls between different $Z_2$ domains. We show, that this definition enables us to unambiguously obtain the Debye Screening mass from the curvature of the effective potential for the Polyakov loops calculated in the modified axial gauge. Using an approach on asymmetric lattices, we obtain numerical values for the Debye mass and compare them to perturbative as well as Monte-Carlo results. Our resulting Debye-Masses are significantly higher than the one-loop perturbative one. They are within the errors in agreement with those obtained by Monte-Carlo methods. Open questions are discussed.
Books by Dietrich Matthes
This new standard textbook examines in detail portable timepieces ('watches') in the 15th and in ... more This new standard textbook examines in detail portable timepieces ('watches') in the 15th and in particular 16th centuries. For this purpose, it gives all known preserved pieces of German and French production with over 800 pictures and 3D computer tomographies.
For the first time, this allows for a detailed analysis and comparison of movement structures, decorative and constructive elements.
Furthermore, spring-driven timepieces in paintings and art and in archives are examined as well as their accessories (keys, hands, cases). This completes the picture of late medieval and early Renaissance time measurement. Text in GERMAN, 500+ pages, 800+ pictures, hardcover, available on Amazon.de
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Papers by Dietrich Matthes
Books by Dietrich Matthes
For the first time, this allows for a detailed analysis and comparison of movement structures, decorative and constructive elements.
Furthermore, spring-driven timepieces in paintings and art and in archives are examined as well as their accessories (keys, hands, cases). This completes the picture of late medieval and early Renaissance time measurement. Text in GERMAN, 500+ pages, 800+ pictures, hardcover, available on Amazon.de
For the first time, this allows for a detailed analysis and comparison of movement structures, decorative and constructive elements.
Furthermore, spring-driven timepieces in paintings and art and in archives are examined as well as their accessories (keys, hands, cases). This completes the picture of late medieval and early Renaissance time measurement. Text in GERMAN, 500+ pages, 800+ pictures, hardcover, available on Amazon.de