Scientists at the University of Oxford are working to upgrade an 18th-century experiment that could potentially become the world's most sensitive dark matter detector. The experiment, initially conducted by Henry Cavendish in 1773, involves measuring the torsion balance to detect tiny changes in gravitational forces. The updated design aims to make the experiment 10,000 times more sensitive, allowing researchers to spot potential dark matter particles more efficiently.
The torsion balance experiment, which is based on Cavendish's original design, uses a weight to measure the gravitational force between two masses. The updated version will feature improved materials and a more precise measurement system, significantly enhancing its sensitivity. This could provide crucial insights into dark matter, a mysterious substance that makes up approximately 27% of the universe's mass-energy density.
Dark matter's existence was first proposed by Swiss astrophysicist Fritz Zwicky in the 1930s, and since then, numerous studies have attempted to detect and characterise it. However, its elusive nature has made it challenging for scientists to directly observe or measure. The upgraded torsion balance experiment could potentially fill this knowledge gap, providing a more efficient and cost-effective way to detect dark matter particles.
According to Dr. James Howe, a researcher involved in the project, the updated experiment could revolutionise our understanding of dark matter. 'This could be a real breakthrough in the field of dark matter detection,' he said. 'By improving the sensitivity of the experiment, we may be able to detect dark matter particles more easily and gain valuable insights into their properties.'
The research team is collaborating with international experts to validate the updated experiment's design and ensure its accuracy. While the findings are promising, it is essential to note that the experiment has not been completed, and peer-review of the research is necessary before any conclusions can be drawn.