In this work the reconstruction of a tau neutrino signal in the KM3NeT detector is discussed.

The first location of the Open Science Centre network was opened on 7 July in Figueira de Castelo Rodrigo, Portugal. A Portuguese Minister and a State Secretary inaugurated the Plataforma de Ciência Aberta, which is a collaboration between Leiden University and the municipality of Figueira de Castelo…

The association agreement between the EU and Ukraine is highly important for peace in Ukraine, and it is therefore essential that Europe weathers these difficult times. These were the words of Ukrainian President Petro Poroshenko on 27 November during his Europe Lecture at Leiden University.

On Saturday 13 October the historical city Leiden was crowded with prospective students visiting the Open Day. They all came to Leiden to orientate themselves towards studying at Leiden University or to ask questions about the content of the bachelor’s programmes. Among them were a lot of international…

Joni Reef was among those present at the opening of Expertise Centre KIND in 's-Hertogenbosch on Thursday 22 November 2018. She spoke to Dutch newspaper Brabants Dagblad afterwards.

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What did colonial officials and missionaries think they were doing?

On Friday 12 September 2025, the Opening Ceremony of the European Law LL.M. programme took place in the Lorentz lecture hall at Leiden Law School. Following Dr Barbora Budinska’s and Professor Armin Cuyvers’s warm words of welcome for the incoming students, Dr Darinka Piqani presented two student pr…

Two new English-taught Bachelor’s programmes ‘Arts, Media & Society’ and ‘Philosophy’ were presented at the Open Day on 15 October. They start next year. Prospective students tell us why they came to the Open Day.

Not one but two openings: the minister who defended her plans and many who emphasised the importance of standing together with the arts and social sciences: the opening of academic year 2019-2020 in Leiden was not without event.

In the early universe, the dynamics of the Higgs field can give rise to many interesting phenomena.

In The Golden Mean of Languages, Alisa van de Haar sheds new light on the debates regarding the form and status of the vernacular in the early modern Low Countries, where both Dutch and French were local tongues. The fascination with the history, grammar, spelling, and vocabulary of Dutch and French…

On Thursday 3 November Leiden University will celebrate the official opening of two wall formulas in the city centre. As of now, Snell’s law and the Lorentz force formula shine on two walls in the heart of Leiden. They are part of a project to display at least ten groundbreaking formulas with a Leiden…

An overview of awards and prizes granted to our staff and students in 2017, as well as special appointments and royal distinctions.

Promotor: A. Achúcarro, Co-promotor: A. Boyarsky

Debates on political legitimacy in Dutch parliament in the 1880s, 1930s, and 1960s

How do you maintain diplomatic relations in a world of rising tensions? This was the theme of a guest lecture by Minister Sigrid Kaag at Campus The Hague. ‘Policy proposals won’t go through if they don’t foster women’s development.’

Last July, Robbert Dijkgraaf, Minister of Education, Culture and Science and Annetje Ottow, President of Leiden University's Executive Board, opened the new front office of the Leiden University office in Jakarta. The office - located on the grounds of the Dutch embassy - has a dual role. Firstly, it…

From 1717 onwards, many Dutch textile workers emigrated to Spain, recruited in the Netherlands through Spanish intermediary agents and diplomatic staff. Bourbon Spain wanted to strengthen its economy by founding royal factories and was in desperate need for skilled foreign labour. This example of labour…

Whether it's brushing up on a language, a course on current legal issues, or a master's degree in cybersecurity. Get inspired at the Online Open Day for Professionals on 2 November.

How can we promote social cohesion in a society that is culturally and religiously diverse?

Friday 25 September, 2015 marks the official launch of Leiden University's Central and East European Studies (CEES) Center.

The Open Day of Leiden University, on Saturday, October 19, 2019 was busy, in a pleasant way. More than 12,500 prospective students and supervisors visited the information market in the Pieterskerk. There, and at other locations, they were informed about the studies they preferred during countless presentations…

The opening and inauguration of the Visitors Centre, and the visitors trail on the site, are an important result of the Tell Balata Archaeological Park project that is jointly being implemented by the Palestinian Department of Antiquities and Cultural Heritage, the Faculty of Archaeology of the University…

A gold carpet welcomed students, staff and curious locals into Spui Campus on Monday 2 February. The V&D department store has been transformed into a unique open knowledge centre.

From virtual education to a friendly meeting place where refugees and Dutch students can get to know one another. Investing in refugees is in the interest of the whole of our society. This was the message of the students who opened the Academic Year of Leiden University on 5 September.

The 289 students who recently moved into the tower on Kolffpad at the Leiden Bio Science Park are sitting pretty. A self-contained unit in the middle of the campus yet surrounded by green, with a launderette, games room and study area on the ground floor, and, coming soon, a branch of Coffee Star.

Spui Campus, Leiden University’s fourth location in The Hague, will soon open its doors. The former V&D department store’s transformation into a university campus is becoming more visible by the week. Removal vans will soon be driving back and forth to move all the furniture there in time. The first…

An overview of awards and prizes granted to our staff and students in 2022, as well as special appointments at Leiden University and other institutions.

Presentations, city tours, themed cafés and information fairs − there was plenty to discover on the Bachelor’s Open Day last Saturday. Around 6,000 prospective students and 4,000 parents visited faculties in Leiden and The Hague to soak up the atmosphere and imagine how it would be to study at Leiden…

Light, open and green: a description that fits the new, renovated location of the Faculty of Humanities. The official opening of the Herta Mohr Building took place on 8 October, and it has many remarkable features: for example, recycled ‘mushroom columns’, a pedestrian bridge to the University Library…

Chinese Studies, History or Urban Studies? How do you choose the right degree programme for you? Hundreds of prospective students tried to find out at the Bachelor’s Open Day in Leiden and The Hague. A new formula helped them on their way.

On March 27th, 2015 the biannual Dutch Medicinal Chemistry Prize for the best Dutch Ph.D. thesis in the field was awarded to Dr. Dong Guo, a current postdoc researcher in our lab, by the Section of Medicinal Chemistry of the Royal Netherlands Chemical Society.

The inner city of Leiden has gained three new wall formulas. On Wednesday 22 November at 15:30 in the Klein Auditorium, alderman Robert Strijk will reveal the paintings of Lorentz contraction, Oort constants and electron spin.

Linguist Willem Adelaar was appointed to Knight in the Order of the Dutch Lion on October 1st. On that very same day he celebrated his 43-year connection to Leiden University. Adelaar has an impressive track record in the field of indigenous, and often endangered, Amerindian languages.

LUMC professor and gynaecologist Dick Oepkes was made a Knight of the Order of the Netherlands Lion on 15 April. Mayor Henri Lenferink presented him with the medal at the end of on online symposium to mark Oepkes’ retirement.

From 1 March 2023, Michiel Tjepkema has been appointed professor of government liability and mining damage at the Open University in the Netherlands. Tjepkema is a former associate professor at the Department of Constitutional and Administrative Law and remains affiliated to this department as a guest…

How can we make sure that The Hague becomes even more of a city of education and knowledge? This was the theme during the festive opening of the college year in The Hague on 30 August. Filled with ambition, representatives from all The Hague's educational institutions, the municipality of The Hague…

After a turbulent Covid year, the well-being of our students and staff has the highest priority. How can we prevent physical and mental health problems? This was the key question at the Opening of the Academic Year in Pieterskerk in Leiden on 6 September.

In collaboration with the collective Tierra de Nadie, BOCA invites you to an open mic session on May 27th at Scheltema (Leiden) starting from 18.30. This collaboration is translingual. So: lxs invitamos al open mic en español, wij nodigen jullie uit in het Nederlands, and we invite you in English! While…