There are many eyewitness accounts by mariners of gigantic waves – almost vertical walls of water towering over ocean-going ships – that appear from nowhere and do great damage, sometimes destroying large vessels completely. Oceanographers, who have had no way of explaining these ‘rogue waves’, have in the past been dismissive of these reports [TM090, or search for “thatsmaths” at irishtimes.com].

## Posts Tagged 'Wave Motion'

### Modelling Rogue Waves

Published May 5, 2016 Irish Times Leave a CommentTags: Applied Maths, Fluid Dynamics, Wave Motion

### For Good Comms, Leaky Cables are Best

Published April 16, 2015 Irish Times Leave a CommentTags: Applied Maths, History, Wave Motion

A counter-intuitive result of Oliver Heaviside showed how telegraph cables should be designed [see this week’s *That’s Maths* column (TM066) or search for “thatsmaths” at irishtimes.com].

### How Big was the Bomb?

Published September 18, 2014 Irish Times 1 CommentTags: Applied Maths, Fluid Dynamics, Physics, Wave Motion

By a brilliant application of dimensional analysis, G.I.Taylor estimated the explosive energy of the first atomic blast, the Trinity Test (see this week’s *That’s Maths* column in *The Irish Times, *TM053, or search for “thatsmaths” at irishtimes.com).

### The Biggest Harp in Ireland

Published September 4, 2014 Irish Times Leave a CommentTags: Geometry, Pythagoras, Wave Motion

This week’s *That’s Maths* column in *The Irish Times* (TM052, or search for “thatsmaths” at irishtimes.com) is about “Samuel Beckett Playing Bridge in Dublin”.

### White Holes in the Kitchen Sink

Published January 9, 2014 Occasional Leave a CommentTags: Applied Maths, Fluid Dynamics, Mechanics, Physics, Wave Motion

A tidal bore is a wall of water about a metre high travelling rapidly upstream as the tide floods in. It occurs where the tidal range is large and the estuary is funnel-shaped (see previous post on this blog). The nearest river to Ireland where bores can be regularly seen is the Severn, where favourable conditions for these hydraulic jumps occur a few times each year.

But you do not have to leave home to observe hydraulic jumps. Continue reading ‘White Holes in the Kitchen Sink’

### Interesting Bores

Published January 2, 2014 Irish Times Leave a CommentTags: Applied Maths, Fluid Dynamics, Geophysics, Mechanics, Wave Motion

This week’s *That’s Maths* column in the* Irish Times* ( TM036 ) is about bores. But don’t be put off: they are very interesting.

### Ducks & Drakes & Kelvin Wakes

Published May 18, 2013 Irish Times Leave a CommentTags: Applied Maths, History, Wave Motion

The theme of this week’s *That’s Maths* column in the* **Irish Times* ( TM021 ) is Kelvin Wakes, the beautiful wave patterns generated as a duck or swan swims through calm, deep water or in the wake of a ship or boat.

Continue reading ‘Ducks & Drakes & Kelvin Wakes’