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Dublin thought a 13th-century Norman castle had been demolished about 150 years ago; a researcher has now shown its walls, courtyard and medieval features were hiding inside a university building all along

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Dublin thought a 13th-century Norman castle had been demolished about 150 years ago; a researcher has now shown its walls, courtyard and medieval features were hiding inside a university building all along

A medieval castle believed to have disappeared around 150 years ago has turned out to be hiding in plain sight inside a university building in Dublin, with researchers finding that its ancient walls and courtyard survived beneath the later structure.The discovery concerns Roebuck Castle on the Belfield campus of University College Dublin (UCD). The Norman … Read more

In 1879, Edwin Hall discovered an electrical effect thought to need a perpendicular magnetic field; 147 years later, scientists have shown it can work with the field in-plane

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In 1879, Edwin Hall discovered an electrical effect thought to need a perpendicular magnetic field; 147 years later, scientists have shown it can work with the field in-plane

An atomic force microscopy scan of a nanometer-sized device developed by Carnegie Mellon scientists that demonstrates a new form of the Hall effect. For more than a century, the Hall effect has been taught with a simple picture that electricity flows through a material, a magnetic field pushes the moving charges sideways, and a voltage … Read more