A light puzzle

Here's a puzzling photograph that Hans Bachor showed me at the end of the NZ Institute of Physics conference last week. It comes from his public lecture on lasers a week ago. And we don't have the answer to it, so maybe you can enlighten us (pun intended).  The photo is of a demonstration of […]

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NZIP2015 Highlights

So the NZ Institute of Physics conference is in full swing. I have a bit of a break between the end of the last session and tonight's conference dinner, so there's time to give some highlights so far.  Well, first, the low-light: Like the rest of my family and half of Hamilton I've had a […]

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Two great talks coming up in Hamilton

As part of the forthcoming NZ Institute of Physics conference, and to celebrate the International Year of Light, we have arranged two fantastic and very different public talks for the evenings of Sunday 5th and Monday 6th July.  First up we have Richard Easther, from the University of Auckland. In "Dawn's Early Light" he'll be […]

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Modes of a square plate

Alison has drawn my attention to this video. It demonstrates vibrational modes of a square plate by using sand. At certain frequencies, there are well defined modes of oscillation, in which parts of the plate 'nodal lines' are stationary. The sand will find its way to these parts and trace out some lovely pictures.  Vibrational […]

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