Tagged: waves

A distant look at Cyclone Cook - Chthonic Wildlife Ramblings

Brendan Moyle Apr 21, 2017

The Cyclone Last Thursday (13th April) Cyclone Cook arrived.  As a precaution, places in Auckland closed. Including Massey’s Albany campus at 11.00 am.  In the end the path of the Cyclone (for Auckland) was a little too easterly and we escaped most of the havoc.  Bad weather also can generate interesting seascapes, so I decided to try my luck at … Read More

Sea-level rise has claimed five whole islands in the Pacific: first scientific evidence - Guest Work

Guest Work May 09, 2016

By Simon Albert, The University of Queensland; Alistair Grinham, The University of Queensland; Badin Gibbes, The University of Queensland; Javier Leon, University of the Sunshine Coast, and John Church, CSIRO Sea-level rise, erosion and coastal flooding are some of the greatest challenges facing humanity from climate change. Recently at least … Read More

The advantage of a transponder - Physics Stop

Marcus Wilson Mar 17, 2014

So, as I said, it appears that it's awfully hard to hide a commercial airliner from military radar. But let's backtrack a bit. Why do aircraft carry transponders? (What is a transponder?) There are a couple of reasons here. First, we need to look at a big problem with radar. It has limited range. We can see this … Read More

Hawking radiation in the lab - Physics Stop

Marcus Wilson Oct 21, 2013

A highlight of the recent NZ Institute of Physics conference was the Dan Walls medal talk given by Matt Visser. Matt has been working on general relativity. That's not desparately unusual for a physicist, but Matt has been successful in working on some of the crazier aspects of relativity and getting it published - wormholes, dumb holes … Read More

Dispersion in water waves - Physics Stop

Marcus Wilson Mar 01, 2013

 I've been perusing YouTube looking for good videos illustrating wave packets - which are bunches of waves containing different wavelengths. I want to come up with a good illustration for a second year physics paper on introductory quantum theory.... Read More

Mossbauer Spectroscopy - Physics Stop

Marcus Wilson Jan 04, 2012

While waiting for my aged computer to boot-up on my return to work this morning, I was skimming through November's Physics World magazine, and noted an obituary to Rudolf Mossbauer.He is best known in the physics world for observing 'resonance absorption' of gamma rays, and then developing the technique of Mossbauer spectroscopy.When a nucleus undergoes gamma decay, it … Read More