Tag Archives | physics


Gravitational Waves Bring a Whole New Way of Studying the Universe

It’s been described as the discovery of a lifetime, the announcement that scientists have observed gravitational waves caused by the collision of two black holes 10 billion light years away (and 10 billion years ago!) What’s all the excitement about? We’ve collected some videos to explain it all. First, scientists from Cardiff University splash around in a […]

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Aoibhinn Ó Súilleabháin Launches City of Physics. Photo Credit: Naoise Culhane

Aoibhinn Ní Shúilleabháin Launches City of Physics

  City of Physics is year long initiative which builds on the Dart of Physics campaign of 2013. That was an idea by Dr Shane Bergin and Dr Aoibhinn Ní Shúilleabháin who won a small grant to put some physics-themed ads on Dublin’s DART commuter line. The result was an award-winning media campaign that got national attention and international support. […]

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Watch a Bowling Ball and a Feather Fall in a Vacuum [Video]

One of the most suprising things we learn in Physics class is that the acceleration due to Earth’s gravity is constant for any mass (9.81 m/s/s). Gallileo demonstrated it in 1589 by dropping objects of different mass from the Leaning Tower of Pisa. Sure, a heavier mass will do more damage, but they all reach the ground at the same time. One explanation […]

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How far can Legolas see?

Don’t you just hate it when science gets in the way of a good story? No doubt JRR Tolkien thought it would be cool to give telescopic vision to elves, but it turns out that the laws of wave diffraction make it physically impossible to distinguish the detail which Legolas describes in The Two Towers. Or […]

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