Mariëlle Bruning, Professor of Child Law, is elected Member of the Expert Group on Responses to violence against children (CAHENF-VAC), which is established to assist the Ad hoc Committee for the Rights of the Child (CAHENF) of the Council of Europe.

The European Commission awarded the project proposal INSIGHT, a follow-up project on illegal firearms trafficking and gun violence from Professor Social Resilience and Security Marieke Liem and PhD-researcher Katharina Krüsselmann of the Institute of Security and Global Affairs (ISGA).

On Wednesday November 28th, the Physics education program organized its second Bachelor Project fair.

On Wednesday December 13, the Physics institute hosts its first Bachelor Project fair. Principal Investigators of many research groups at LION give poster presentations on the opportunities they have in store for students who will soon start their Bachelor project.

From July 22nd to August 1st, the Leiden Institute of Physics organizes its annual summer school, titled ‘Modern Physics at all Scales’.

On Tuesday September 11th, the Leiden Institute of Physics (LION) organizes the third edition of its annual Science Day. Scientists from disciplines all across the physics spectrum will elaborate on their research during seventeen interactive talks. LION organizes the event to showcase the full range…

Finally, it's high time for the yearly LION Image award. Send us your most impressive, beautiful or insightful physics image, and win eternal fame on top of 100 euros, and a year long exhibition on the LION picture wall.

New: Een Podcast over Natuurkunde, a podcast about Leiden physics. In the first episode, Dirk van Delft tells about the Hendrik Antoon Lorentz biography that he wrote with Frits Berends.

The interdisciplinary, English-taught minor ‘Violence Studies’ looks at violence from very diverse scientific perspectives. What are the benefits from this approach? Students and lecturers evaluate: ‘This minor’s a goldmine’.

When do we say violence was used in an incident? The answer may seem obvious at first. But interim results from a study by Jolien van Breen show that Dutch people are labelling events in increasingly broad contexts as violent.

This study is a critical discourse analysis of the misogynistic narratives shared by three incel violent extremists.

The winning picture by Sander Blok in the annual Physics Image Award has made it to Leidsch Dagblad. The runner-up image by Jelmer Wagenaar has been selected as Beeld van de Week in De Volkskrant.

The steady decline in lethal gun violence in the EU came to halt in 2012 and some countries, such as Sweden, have even noticed an increase since then. An arms race among drug criminals and an increase in the availability of illegal firearms could lead to more criminal and gun violence. This is one of…

The Leiden physics institute LION has bought a painting by the American physicist Gregory Horndeski, who wrote a brilliant article about gravity in 1974. After being ignored for 35 years, Horndeski's paper became a huge hit among cosmologists, unbeknownst to Horndeski himself, who had made a career…

The Visiting Scholar Scheme at the Institute of Security and Global Affairs welcomes applicants from early career to professors to join us for a maximum period of 3 months in The Hague.

On Wednesday 25 January, the British Embassy, the Global Transformations and Governance Challenges (GTGC) programme at Leiden University and Women in International Security Netherlands (WIIS-NL) were hosting a round table with Professor Bina D’Costa to discuss the prevention of conflict related sexual…

On 24 April 2024, Carlotta Rigotti and Gianclaudio presented their new report on sexual violence and harassment in the metaverse during a webinar co-organised by AUDRi, Equality Now, and VULNERA.

Mexico is currently facing an unprecedented social and political crisis, with expanding criminal and political violence, rampant impunity and crumbling political institutions. Next to the daily report of anonymous victims of violence, last summer in Central Mexico at least 15 citizens were executed…

Dutch troops, judges and politicians collectively condoned and concealed the systematic use of extreme violence during the Indonesian War of Independence. Historians have now shown how this could happen. ‘It was scandal management rather than prevention,’ says Leiden historian and research leader Gert…

Why do violent incidents occur in prisons? And how do staff respond? Assistant Professor Esther van Ginneken will use a grant from the NWO Vidi Talent Programme to conduct research into these and other questions. She intends to make use of virtual reality.

At the winter conference of the Dutch Christian student union CSFR, Mark Dechesne, Associate Professor, spoke about the decline in terrorist violence in the Netherlands.

Terrorism experts Daan Weggemans (Leiden University) and Beatrice de Graaf (Utrecht University) conducted one of the first scientific studies on the societal reintegration of jihadist former detainees. They showed that the reintegration process isn't without problems. Their conlusions are presented…

Climate change is a challenge for both current and future generations. New biological resources have to be developed in order to meet the demand for energy as well as the demand for food.

Research into 25 years of lethal violence in the Netherlands and into language socialisation of deaf families in Africa will receive grants from the Leiden University Fund (LUF).

Swarms of drones, pedestrians or the cells in your body. Those are all examples of active matter: materials whose building blocks can move autonomously. That’s what Luca Giomi studies. Giomi has been appointed Professor of theoretical physics in the area of soft matter and biological physics at the…

On the evening of Tuesday January 31st, the physics institute organizes its triannual meeting for over seventy high school teachers. The program consists of lectures on developments in modern physics and the latest initiatives in the world of education.

Dear student, Join the Career Information Meeting Astronomy & Physics (CIMAP) and launch your career! The meeting is set up especially for Astronomy and Physics master’s and 3rd year bachelor’s students and takes place on Monday October 9th from 15:30 - 17:30 hrs in room HL414.

Beenakker

The particle accelerator of CERN, the European Organization for Nuclear Research, produces large amounts of complex data with high accuracy, as a result of which theoretical predictions also need to be more accurate and faster. With his research team, PhD candidate Ben Ruijl developed very innovative…

Salt crystals, a nano-sized golf stick and molten glass. The LION Image Award competition of 2023 yielded a lot of beautiful images once again. But in the end, only one can be the winner.

Polarisation in our society is on the rise. What makes people increasingly radical? How do we protect ourselves from extremist, terrorist or criminal threats, be they physical or in the cyber world? And what role do intelligence services play in this?

After a succesful first lecture, the Leiden physics institute LION is launching an online series of (Dutch language) lectures about physics, intended for a broad audience, named the Tatiana Afanassjewa lectures. Upcoming speakers are science historian Dirk van Delft, neutrino physicist Dorothea Samtleben…

A new discovery proves that it matters which approach researchers take in analyzing large physical, social or biological systems that have a networked structure. Ever since the early 1900s, scientists have assumed each approach is equivalent. Now many results in statistical physics may no longer hold.…

On April 20, sixty participants will take part in LION’s triannual meeting for high school physics teachers, to deepen their knowledge of physics and astronomy and to explore new teaching methods. This edition marks a special occasion, as it is the last meeting organized by Bert van der Hoorn, who will…

Leiden Physics Poster

Daniela Kraft and her research are a familiar fixture at the Leiden Institute of Physics (LION). Both have been awarded fellowships, grants and frequent media coverage. Effective July 1, Kraft has been appointed professor of Experimental physics, particularly in soft and biological matter.

There are miniaturisation beams, microrobots, and ice skaters who suddenly drop into a hole in the ice. Students of the local MBO Rijnland let their imagination run free while animating Leiden physics research. The result is eleven surprising and very diverse science animations.

In the latest episode of DWDD University on 'Light', Prof. Robbert Dijkgraaf used a number of experiments from the Leiden Physics Practicum Lab. He showed why the sky is blue, that light is a wave phenomenon, how magnetism and electricity are connected and that white light consists of all colors of…

For the International Day of Women and Girls in Science, women students and researchers from physics talk about what inspires them about their work. From quantum to cosmology and biophysics, their curiosity about how nature works is what connects these women. What do these 5 scientists want to share…

NWO has granted Jan Aarts en Vadim Cheianov a Physics Projectruimte, a granting instrument for small-scale projects that propose innovative fundamental physics research that has a scientific, industrial or social urgency.

This paper critically compares seven widely used risk assessment tools for violent extremism, including the VERA-2R, the ERG 22+, the SQAT, the IR46, the RRAP, the Radar, and the VAF.

Terrorism only poses a small risk to people but tends to be a major source of public fear. Through fear, terrorism has far-reaching implications for public governance.

String theory has come under fire in recent years. Promises have been made that have not been lived up to. Leiden theoretical physicists have now for the first time used string theory to describe a physical phenomenon. Their discovery has been reported this week in 'Science'.

This summer, the Casimir Research School celebrates its first lustrum. To mark the occasion and to commemorate the fact that Hendrik Casimir would be 100 this summer, his widow Josina Casimir-Jonker has endowed the Research School with a fund to support the activities of master's students.