Scientists use olive oil to discover new universal physics law

Olive oil leads to the discovery of a law that applies to atoms, superconductors, and even high energy physics.

Scientists use olive oil to discover new universal physics law
  • Physicists at the Dutch research institute AMOLF used olive oil in an experiment on light phase transitions.
  • The scientists found that light would behave the same way in atoms, superconductors, and high energy physics.
  • The discovery can lead to applications in new computing and sensing systems.

The dressing in your salad might redefine science if you look carefully enough. Researchers in the Netherlands used a drop of olive oil to discover a new universal law of phase transitions.

The research was carried out by the Interacting Photons group of the AMOLF institute, which focuses on fundamental physics. The experiment involved dropping olive oil into an optical cavity system of photons bouncing back and forth between two mirrors. It was set up to explore how light goes through phase transitions the way it would in boiling water, for example.

What's fascinating, this system had "memory" in how the oil made photons interact with themselves, as the group leader Said Rodriguez explained. "We created a system with memory by placing a drop of olive oil inside the cavity", said Rodriguez. "The oil mediates effective photon-photon interactions, which we can see by measuring the transmission of laser light through this cavity."

The research team, which also included Rodriguez's PhD students Zou Geng and Kevin Peters, increased and decreased the distances between the mirrors at different speeds and noted how light transmitted through the cavity was affected. They saw that the direction in which the mirrors moved influenced how much light got through the cavity, finding that "the transmission of light through the cavity is non-linear." This behavior of light, called hysteresis, is present in the phase transitions of boiling water or magnetic materials.

The scientists also increased the speed with which the oil-filled cavity opened and closed, observing that under such conditions the hysteresis was not always present. This allowed them to extrapolate a universal law. "The equations that describe how light behaves in our oil-filled cavity are similar to those describing collections of atoms, superconductors and even high energy physics," elaborated Rodriguez, adding: "Therefore, the universal behavior we discovered is likely to be observed in such systems as well."

An optical cavity formed by two mirrors used in the experiment. Light going through the cavity bounces between the mirrors until leaving to where the transmission is measured. The scientists filled this cavity with olive oil and moved the mirrors at varying speeds.

Credit: Henk-Jan Boluijt (AMOLF)

The researchers think their discovery may have potential applications in computing or sensing systems.

Check out their new study in Physical Review Letters.

A mind-blowing explanation of the speed of light

‘Designer baby’ book trilogy explores the moral dilemmas humans may soon create

How would the ability to genetically customize children change society? Sci-fi author Eugene Clark explores the future on our horizon in Volume I of the "Genetic Pressure" series.

Surprising Science
  • A new sci-fi book series called "Genetic Pressure" explores the scientific and moral implications of a world with a burgeoning designer baby industry.
  • It's currently illegal to implant genetically edited human embryos in most nations, but designer babies may someday become widespread.
  • While gene-editing technology could help humans eliminate genetic diseases, some in the scientific community fear it may also usher in a new era of eugenics.
Keep reading Show less

Octopus-like creatures inhabit Jupiter’s moon, claims space scientist

A leading British space scientist thinks there is life under the ice sheets of Europa.

Jupiter's moon Europa has a huge ocean beneath its sheets of ice.

Credit: NASA/JPL-Caltech/SETI Institute
Surprising Science
  • A British scientist named Professor Monica Grady recently came out in support of extraterrestrial life on Europa.
  • Europa, the sixth largest moon in the solar system, may have favorable conditions for life under its miles of ice.
  • The moon is one of Jupiter's 79.
Keep reading Show less

What is the ‘self’? The 3 layers of your identity.

Answering the question of who you are is not an easy task. Let's unpack what culture, philosophy, and neuroscience have to say.

  • Who am I? It's a question that humans have grappled with since the dawn of time, and most of us are no closer to an answer.
  • Trying to pin down what makes you you depends on which school of thought you prescribe to. Some argue that the self is an illusion, while others believe that finding one's "true self" is about sincerity and authenticity.
  • In this video, author Gish Jen, Harvard professor Michael Puett, psychotherapist Mark Epstein, and neuroscientist Sam Harris discuss three layers of the self, looking through the lens of culture, philosophy, and neuroscience.
Keep reading Show less

Discovery of two giant radio galaxies hints at more to come

The newly discovered galaxies are 62x bigger than the Milky Way.

This image shows most of the giant radio galaxy MGTC J095959.63+024608.6; in red is the radio light from the giant radio galaxy, as seen by MeerKAT. It is placed ontop of a typical image of the night sky.

I. Heywood, University of Oxford / Rhodes University / South African Radio Astronomy Observatory / CC BY 4.0.
Surprising Science
  • Two recently discovered radio galaxies are among the largest objects in the cosmos.
  • The discovery implies that radio galaxies are more common than previously thought.
  • The discovery was made while creating a radio map of the sky with a small part of a new radio array.
Keep reading Show less
Mind & Brain

The secret life of maladaptive daydreaming

Daydreaming can be a pleasant pastime, but people who suffer from maladaptive daydreamers are trapped by their fantasies.

Scroll down to load more…