Simon Kelley of the Open University in the UK, John Spray of the University of New Brunswick, and David Rowley of the University of Chicago in the US, reached this startling conclusion while trying to calculate the precise age of the Rochechouart meteorite impact in France. Geologists have recorded over 170 impacts in the Earth’s […]
The technique works on any turbid medium observed with light in the wavelength range 200-1000 nm, making it suitable for a wide range of applications. Patent 5719398 describes how three simple stages create the final image. First the observer measures the optical parameters of the object and convolutes the data with a special filter. A […]
Here I am, sitting quietly and comfortably in front of my tiny wooden desk, typing these lines on the keyboard of my laptop computer, peeping from time to time through the light linen of the curtain and the protective window-pane at the bare branches of the tree outside. I hold the book in my hand, […]
Taking a light hearted tone during the proceedings – with frequent references to popular culture – Hawking said: “I don’t believe science fiction like Star Trek, where people are essentially the same 400 years in the future.” Hawking said that new technology – such as artificial intelligence – would not be the only change over […]
The figures are from the French Science and Technology Observatory. “The connection between research and innovation is really bad, ” says Rémi Barré, director of the observatory, which monitors scientific activity in France. The government’s spending on R&D is about FFr 180 bn (about £1.8 bn) each year – 2.4% of the country’s gross national […]
Rumours that Lunar Prospector – NASA’s first lunar mission in twenty five years – had confirmed the existence of water ice had captivated the space science community since the beginning of February. Lunar Prospector was not originally designed to search for water on the Moon. Four years ago, however, a radar experiment on the Clementine […]
The “Delphi 98” report contains the views of more than 2000 experts from industry, research and education, who were asked to predict what they thought would be the most important developments over the next 30 years. They concluded that Germany leads the world in the environmental, energy, construction and transport sectors, and lies a close […]
The observing time of the original six partners – the US, the UK, Canada, Chile, Argentina and Brazil – will be slightly reduced, but this loss will be offset by “enhanced scientific productivity” made possible by Australia’s contribution, according to Gemini director, Matt Mountain. Australia will give A$13.5 m (about $9.2 m) to the project […]
The results show that the limited quality of conventional X-ray images can be dramatically improved by exploiting synchrotron light (D Chapman et al. 1997 Phys. Med. Biol. 42 2015). Moreover, there is no need for a high radiation dose. Ineffective radiology has a big impact on society. Relatively high X-ray doses can overcome the limitations […]
The laws of quantum mechanics can be used to process and transmit information in ways that are not possible with existing systems, Anton Zeilinger says
Read article: Fundamentals of quantum information
