‘What if we switch off all the lights one evening? That idea crossed my mind from time to time. And when I mentioned it to a taxi driver one day, he said: “Oh, you mean: lights out, stars on!” That’s not completely true, of course, because the stars are always on, but his phrase summed up the idea n…

Two talented academics from Leiden who recently obtained their PhD have been awarded a Rubicon grant by the Dutch Research Council (NWO). The grant enables them to gain experience at a knowledge institute abroad.

A suitcase covered with stickers from various universities, containing a quantum light source. Since April 2024, this suitcase has been visiting scientists in Europe researching single photons: the smallest possible quantity of light. The suitcase, also called ‘Q-torch’, travels from lab to lab like…

Leiden patriot Pieter Vreede fought for greater popular influence. Historian Dirk Alkemade reveals how this pioneer used radical means to shape Dutch democracy.

Most of us are spending more time looking at computer screens due to remote working and online meetings. Video calls have become a popular way of keeping in touch for professionals but it’s not without its problems. The two most frequently heard complaints are a general sense of fatigue and a lack of…

Leiden University has extensive real estate. Our Real Estate Directorate is responsible for realising and maintaining all university buildings. If you wish to make modifications to a building, you have to take into account a number of agreements.

Leiden University appreciates it if you as a researcher take the time every now and then to explain your work to a wider audience.

A fiction film portrays a narrative with well thought out characters as realistically as possible with the use of actors, lighting and decor. The strength of a fiction film is being able to relay a deeper meaning in an entertaining and artistic way.

One of the focal points of the teaching strategy at Leiden University is ensuring student success. Various initiatives have therefore been taken in this light ranging from the Leiden Study System to CROHO and from the Teachers’ Academy to teaching innovation.

A talking head is a video in which the presenter is recorded from the waist up. This format usually includes visual aids like slides, a board, an object or an animation. This can be recorded in your office, at home or in the studio. If you consider recording in your office or at home, you might want…

Arts and leisure, Arts and leisure

The purpose of Security is to make sure that everyone within the university can study, work and relax in a safe and pleasant environment. This means not only responding to incidents but also preventing them.

Arts and leisure, Arts and leisure

Leiden University appreciates it if you explain your work to a wider audience every now and then. We encourage media contributions and have people and tools to help you with this.

The University has ambitious plans for reducing the environmental impact of its activities. To this end we have taken university-wide measures in the form of improved building sustainability, sustainable energy and water-saving measures. As an employee, you can also contribute to lowering the environmental…

Leiden University ensures a pleasant and safe working environment, whether you are on campus or working from home. Here you will find practical information about accommodation and facilities, as well as answers to questions such as: How do I arrange an ergonomically responsible workplace at home? Where…

What will happen if the lights in a large part of the city are switched off? How many stars can you see without all that light pollution? This is what researchers, artists and the residents of Leiden are going to investigate during Seeing Stars Leiden on 25 September. ‘Leiden is the ideal place for…

A microscope with incredible sharpness that leaves samples unharmed – Guido Stam helped develop one. During his PhD research, he combined light and electrons to study biological samples. ‘We can now measure things that simply weren’t possible before.’

A suitcase as a messenger of quantum science. That is the idea behind QuanTour, a project connecting researchers from 12 European universities. In December, the suitcase landed in Leiden. A month later, it is time to pass the baton to Copenhagen. But what happened to it in Leiden?

Arts and leisure, Arts and leisure

If a researcher has appeared on the TV or radio or in a newspaper, for example, you can create an ‘In the media’ page referring to this. How do you write a good ‘In the media’ page? Below are some guidelines.

To mark the university’s 450th anniversary, the Leiden Discoveries science route has been updated and was relaunched on the Night of Discoveries. New signs in town and a revamped website tell Leiden residents and visitors the stories of the city’s spectacular discoveries.

Are magnetic fields older than the first light? And how did they influence the development of our universe right after the Big Bang? Cosmologists from Leiden, Groningen, and Utrecht are now collaborating to investigate this.

Students for Palestine – a group of students from Leiden and The Hague – are holding a panel discussion in the Leiden University in The Hague Wijnhaven building on Tuesday 24 May entitled ‘Silencing Palestine’.

De Universiteit Leiden is al 25 jaar stevig geworteld in Den Haag. Dat werd zichtbaar tijdens de feestelijke bijeenkomst rondom de foto-expositie Universiteit Leiden in Den Haag: Onderzoekers van de stad.

For the first time, we’re seeing what Euclid sees. The telescope’s initial observations have provided a wealth of new information about our universe. But according to cosmologist Alessandra Silvestri, this is just the beginning. The research helps us gain a deeper understanding of the past, present,…

One in two people will be diagnosed with cancer. World Cancer Day on 4 February raises awareness of the impact of this devastating disease. Leiden University is conducting various studies aimed at preventing and controlling cancer. Below are just a few examples.

Besides physics, the sleep of PhD students also benefits from Vitaly Fedoseev's PhD research. He will receive his doctorate on July 7 for his work on optomechanics within quantum mechanics. And also on a setup that eliminated the need for PhD students to push a button every hour for 72 hours.

The radio telescope LOFAR, with a major contribution from Leiden Observatory, has produced the most detailed radio map of the Universe ever made. Never before have so many cosmic radio sources been captured in a single survey: 13.7 million.

Have you applied for a LU-Card but not received it? Does your LU-Card not work? Or do you have a different question or problem? Listed below are a few common questions and problems relating to the LU-Card.

What do you need to record a knowledge clip in the studio? You can find below a checklist of the materials you need to bring to a studio recording. Keep in mind that this checklist depends on the kind of video you want to record. Always discuss the specifics for producing such a video with your video…

In a topping out ceremony on Thursday 30 January, the new sports centre celebrated reaching its highest point and looked ahead to the future. The university will have a spacious and sustainable sports building by the start of 2026.

Even with state-of-the-art technology, it is almost impossible to see: a cosmic neutrino. Yet scientists have managed to image this particle with a deep-sea telescope. And that could help to better understand our universe. Leiden particle physicists collaborated on this ambitious project, published…

A special type of mirror to reflect X-rays has more possible applications than space research. Targeted radiation therapy for cancer, for example. Next to his full-time job, physicist David Girou mapped out the possibilities. He will receive his PhD on 14 June.

Museum Boerhaave commemorated the hundredth anniversary of Einstein’s Theory of General Relativity with the exhibition ‘Einstein & Friends’. The exhibition shined light on the famous physicist’s Dutch friends and his love for Leiden. A review featuring seven images can be found below.