Every month there is an opportunity to visit the Old Observatory in the evening. These open evenings consist of a lecture followed by a visit to the telescopes in the building.

Promotor: H.W. Lenstra

Our research is done at two different locations.

On Tuesday 19 December 2017 Anneloes Kuiper-Slendebroek defended her doctoral thesis 'Rechter over Grenzen' which deals with the application and interpretation of international law in Dutch private law. Supervisor is Martijn Polak, co-supervisor is Jeroen van der Weide.

Inaugural lecture

Promotor: Prof.dr. P. Stevenhagen, Co-Promotor: Dr. J.H. Evertse

On 12 January 2022, Mirjam Franke defended the thesis 'Over de grens van de onrechtmatige daad'. The doctoral research was supervised by Prof. A.G. Castermans and Prof. J.H. Crijns.

Promotor: S.J. Edixhoven

Inaugural lecture

Leiden University, Department of Economics

In specialist organ literature a negative verdict is given on organs and organ specialists from the 1930’s. Did the same verdict apply to Johan van Meurs’ (1903-1986) work? Which role does Van Meurs’ collection of organ specifications play in the historical research on the organ?

Promotor: S.J. Edixhoven Co-promotor: L. van Geemen, P. Parent

Triplet superconductivity refers to a condensate of equal-spin Cooper pairs (pairs of electrons with equal spin).

Dit rapport maakt deel uit van het project Receptenboek burgerparticipatie in opdracht van de Rijksdienst voor het Cultureel Erfgoed (RCE) en met steun van het Fonds voor Cultuurparticipatie.

In this thesis, I studied the origin and evolution of the non-thermal radiation in merging galaxy clusters.

PhD defence

The position of writing within the domain of artistic academic research is not self-evident. In academia, standard practice is to use writing for the transfer of knowledge: it is a means of communication. In the practice of (nonlinguistic) artistic research, the outcome is also often contextualized…

Promotor: Prof.dr. K.H. Kuijken, Co-Promotor: Dr. H.Hoekstra

How did the medieval manuscript develop as a physical object during the Twelfth Century Renaissance and what do these changes tell us about the intellectual culture of the period?

Hoe ver mogen demonstranten gaan? En moet de politie ingrijpen als iemand zich vastketent? Jeroen ten Voorde, hoogleraar straf- en procesrecht, sprak met Omroep Gelderland over het demonstratierecht: ‘Ik zou niet meteen zeggen dat het strafbaar is.’

Foute taal? Bestaat niet!

Ferdinand Harmsen (49) is an ICT and Education Coordinator. He helps study programmes that want to use ICT to improve their education. He has been working with IT all his life, although it wasn't his initial calling: 'It turned out to be a very nice instrument to do what really fascinates me'.

The role of transnational, non-institutional networks in the opening up of British transatlantic trade at the end of the 17th/beginning of the 18th century

Op 22 september 2021 verschijnt de volgende publicatie van dr. Charlotte J.C. Broer: "Uitzicht op Oudwijk Bisschoppen, burggraven en het circa 1135 gestichte wereldlijke vrouwenstift in Oudwijk bij Utrecht in de twaalfde en dertiende eeuw". Voor meer informatie: http://www.broerendebruijn.nl/Oud…

This year, LUCIS adapted the programme of its popular annual Middle Eastern Culture Market into an evening version, featuring a lecture, book discussion, and music.

That a parrot can copycat sounds is nothing new. But vocal learning is not common in animals. Researcher Carel ten Cate of the Institute of Biology Leiden (IBL) of Leiden University has now discovered a duck species that can imitate sounds. ‘It started with an obscure reference about an Australian musk…

This project sets out to map, document and analyze instances of squatting in Leiden from 1970 to 1990, in order to set up an online Digital Archive of Squatting in Leiden. This archive will function as an online resource for academic research, as well as a starting point for public activities such as…

From how litter spreads to which languages are spoken in Leiden and The Hague: over 50 interesting, surprising, complex and entertaining questions were sent in for the Citizen Science Project to mark our 444th anniversary.

The Netherlands has also announced special measures to fight SARS-CoV-2 coronavirus. These measures have at times caused questionable behaviour, such as stockpiling or charging exorbitant sums for masks. But the intentions behind this seemingly antisocial behaviour are not necessarily bad, says Professor…

In de maanden maart, april en mei organiseerde het programma Transparantie in Informatie, van de ministeries van Economische Zaken en Klimaat (EZK) en Landbouw, Natuur en Voedselkwaliteit (LNV), gesprekken over de veranderopgave naar een Open Departement. De sessies hadden als doel om een eerlijk en…

Our vision of stress is starting to change fundamentally. We can suffer stress without even being aware of it, while sleeping as wall as during the day. Professor of Psychology Jos Brosschot will discuss this phenomenon in his inaugural lecture on 2 December.

Why does it turn out to be so complicated to solve sustainability issues if everyone ‘knows’ about these problems? This was the central question in a masterclass on Sustainability for alumni provided by Leiden scientists active in public administration and environmental sciences.

Tiny self-propelling spheres, measuring only micrometers, move faster over a hydrophobic silicone surface than they do over hydrophilic glass. 'Almost nobody had realised that the substrate matters', says Stefania Ketzetzi, the researcher who discovered the effect, researched it and explained it. She…

The formal handing over of the keys for the first stage of the Science Campus will take place on 23 February.

This research note argues that the “lone wolf” typology should be fundamentally reconsidered.

De vraag is hoe groot de dreiging van het rechts-extremisme is in Nederland? Nikki Sterkenburg spreekt hierover in Trouw en RTL Nieuws.

In high school, Tim van Erven read about an artificially intelligent algorithm that could solve mazes. From that moment on, he was sold: ‘There’s something magical about algorithms. With a list of fixed rules you can make them learn the most diverse things.’ This year, he won a Vidi grant, which he…

Last weekend, an article on data privacy appeared in Trouw. In this essay, Bram Klievink, Professor of Digitization and Public Policy at the FGGA, addresses the issue of data privacy. What are the downsides of the rules the tech giants have to abide by?

Do you consider applying for the Media Technology MSc programme? This is your chance to meet our staff and students, and learn how we connect creativity, science and personal curiosity!

Zou je graag een hoofdstuk uit je proefschrift in informele setting willen bespreken? Heb je een onderzoeksidee dat je graag zou voorleggen aan vakgenoten? Neem dan contact op met ozsmed@hum.leidenuniv.nl. De Onderzoekschool organiseert sinds kort een seminarreeks waarin dergelijke onderwerpen in een…

On Good Friday (30 March) and Easter Sunday and Monday (1 and 2 April) most Leiden University premises are closed. Both the University Library and Wijnhaven Library will be open on Good Friday and on Saturday 31 March.

As part of the events to mark the 100th anniversary of the International Labour Organization, the Department of Labour Law of Leiden University has organized a film evening together with Kijkhuis cinema in Leiden.

Universiteit Leiden en Unicef werken al 10 jaar samen om kennis over kinderrechten uit te breiden en te verspreiden. Ze verlengen deze samenwerking.

Mosques with limited opening hours, fewer family visits and fewer events: for the second time, Ramadan was different due to Covid. Islamologist and deputy director of the Leiden Islam Academie Fatiha Azzarhouni looks back on a special month.

The introductory meeting of the new evening track Management and Consultancy (MSc Management Public Sector) was held on Thursday 3 February at Wijnhaven. Prof. dr. Frits van der Meer, in charge of the professional Public Administration master programme, welcomed the first cohort of students together…

This paper develops a novel theoretical framework for the conduct of postmortems after major foreign policy surprises for the European Union and its member states.

What did medieval scholars think of the books they read? In her inaugural lecture, Professor Mariken Teeuwen will talk about the texts they wrote in the margin.