Macro shots
34 photos
Various small items taken with a macro lens
Salt Spring Island library show 2024
39 photos
Show with John de Bruyn at the Salt Spring Island public library, Dec 2 - 31, 2024
Art in the City 2024
28 photos
Images for Art in the City 2024 show at the West End Community Centre, May 3, 4, 5, 2024.
Vancouver
The Map and the Territory show
54 photos, 4 videos
A show at the Red Head Gallery
401 Richmond St. Toronto.
Jan 20 - 30, 2016.
In collaboration with Ron Wild.
Riverdale Art Walk
30 photos
Riverdale Art Walk show. Outdoors in a park in Toronto, June 2013.
Queen West Art Crawl
41 photos
Images included in the Queen West Art Crawl, an outdoor art show in Trinity Bellwoods Park, Toronto, Oct 1, 2, 2016.
Oakwood Village Library and Arts Centre show
9 photos
April 2018
Science rendezvous art show
9 photos
May 12, 2018
Twisted show at the Project Gallery
4 photos
Perpetual Motion show at the Project Gallery
10 photos
Annex Patio art show
5 photos
Pattern Formation
661 photos, 126 videos
Examples of nonlinear pattern formation from Nature and the laboratory.
sky and clouds
102 photos, 2 videos
ripples and stripes
102 photos, 9 videos
Patterns in the form of ripples and stripes.
Art Set
70 photos
Sea weed
144 photos
Sea weed patterns, mostly from the west coast of BC, Canada
Crack Patterns
240 photos, 16 videos
A collection of cracked things, or things produced by a cracking process.
Laboratory patterns
146 photos, 102 videos
These are images of pattern formation made in the laboratory. Some of these are from serious physics experiments, and some are just messing around. But they are all deliberately made by me (or my...
electroconvection in smectic films
51 photos, 12 videos
Liquid crystal films are something like soap films. They have bright colours in reflected white light. You can make them flow by putting a voltage across them. In these experimental movies, the...
Lab icicles from new data, some with dye
62 photos, 25 videos
A collection of lab icicle pictures, time lapses and tyches, made with newer high resolution images.
Some icicles are dyed with fluorescein as an impurity.
John Ladan data.
See ...
Icicles
188 photos, 66 videos
Shapes and ripples on icicles, plus a few images of icicle arrays and natural icicles.
The Icicle Machine
41 photos, 1 video
The machine used to grow icicles in the laboratory at the University of Toronto.
See
www.physics.utoronto.ca/Icicle_Atlas
and
www.physics.utoronto.ca/nonlinear/papers_icicles.html
porch icicle macine
27 photos
A device to grow icicles on my front porch in Toronto.
3D printed icicles
12 photos, 2 videos
An album of images and videos about make 3D printed versions of real icicles, based on data from the Icicle Atlas.
www.physics.utoronto.ca/Icicle_Atlas
The Faraday experiment
10 photos, 1 video
Applying a vertical sinusoidal oscillation to a dish of fluid effectively modulates the acceleration of gravity seen by the fluid. If this modulation exceeds a critical value, the normally flat state...
Natural patterns and textures
299 photos, 4 videos
My collection of pattern formation from natural examples. Some of these are the object of serious research in nonlinear physics, and some are just nice to look at.
See also my YouTube...
Cymatic tonoscope
9 photos, 24 videos
Shaking a petri dish of fluid (water or baby oil) on a speaker and projecting light through it to observe the of caustics produced by the Faraday wave patterns.
Prototypes: using slide projector and...
Granular shaker experiment
9 photos, 2 videos
Bronze particles are shaken vertically on a horizontal plate. Patterns emerge.
An advanced lab experiment.
Sand segregation in a rotating tube
7 photos, 3 videos
A mixture of large (black) and small (white) grains are turned in a horizontal glass tube. The grains unmix and segregate by size, forming stripes along the axis of the tube.
Dominos
7 photos, 1 video
An undergraduate lab experiment to study the speed of falling dominos as a function of their spacing.
Videos by student Theepiga Jeyasingham
Street Metal
66 photos
Pictures of grates, manhole covers and other steel stuff embedded in the street.
Doors, including blocked doors
81 photos
Just doors, possibly blocked up ones.
Flea Market finds
104 photos
Stuff seen at various flea markets. Mostly jumbles of things.
Pancake ice
18 photos, 5 videos
A self-organized pattern of swirling river ice that forms nice round pancakes.
The Humber river, Toronto.
Bridges and infrastructure
240 photos, 1 video
Tafoni
207 photos
Cellular erosion patterns, known as "tafoni", usually found in sandstone.
en.wikipedia.org/wiki/Tafoni
Soliton tank experiment
4 photos, 5 videos
Experiments on water wave solitons. Waves are made with a motorized, computer controlled wavemaker. The tank is 8 feet long and 15cm wide. The water is a few cm deep.
Solitons can be made to...
radial viscous fingering
18 photos, 3 videos
An experiment with fluids.
Domino chain reaction
3 photos, 3 videos
A set of dominos that get bigger and bigger, by a factor of 1.5.
Leslie Spit
32 photos
A wholly artificial peninsula in Toronto made of landfill, building waste etc, which is now a park.
en.wikipedia.org/wiki/Leslie_Street_Spit
Walls, bricks and paving
535 photos
A collection of brick patterns and some paving stones, tiles etc.
Convection in Liquid Helium: the Manchester low...
7 photos, 46 videos
THE MANCHESTER LOW TEMPERATURE CONVECTION MOVIES
A Memoir by Peter Lucas
0.0 INTRODUCTION:
Over the time period 1996 to 2006 workers at the University of Manchester in the UK created an...
Manufactured patterns
164 photos
Patterns of human-made objects and structures.
Ice Spikes
37 photos, 5 videos
Ice spikes are sort of self-constucted ice pipes: water forced through a small hole in an ice covered surface into very cold air freezes to form an extended "spike". The forcing is usually...
Sand ripples and other beach patterns
425 photos, 17 videos
Ripples on sand at the beach --- or on fossil beaches. And other patterns on the beach.
Convecting chemical plumes
13 photos, 21 videos
A vertical tube of viscous solution contains stable reactants for the Iodate Arsenous Acid reaction. An indicator makes the solution red. Reaction is triggered at the base of a small tube at the...
The Belousov Zhabotinsky reaction
5 photos, 2 videos
The famous pattern forming chemical reaction in a petri dish. Nucleation sites periodically launch waves, forming target patterns. If a wavefront is broken, it curls back on itself, forming a...
Physics demonstration videos
3 videos
A collection of more-or-less educational demonstration videos showing some interesting physics. Sometimes these involve pattern formation, sometimes not.
See also my YouTube...
Chladni plates
22 photos
A thin metal plate shaken vertical by a post in the centre will vibrate in a certain mode pattern. The pattern can be made visible by sprinkling white sand or salt on the plate. The grains are...
Washboard road
8 photos, 3 videos
This set shows images and movies of an experimental realization of washboard road --- the annoying instability of a flat sand or gravel road under the action of driving wheels that causes it to...
Tow Hill, Haida Gwaii BC
10 photos, 1 video
The beautiful outcrop of columnar joints at the top of Haida Gwaii BC. Important in Haida creation stories.
Columnar joints
101 photos, 12 videos
Columnar joints are ordered fracture patterns found in a variety of media from basalt to cornstarch.
See www.physics.utoronto.ca/nonlinear/papers_mud.html
Giant's Causeway
25 photos
The Giant's Causeway in Northern Ireland, probably the most famous outcrop of columnar joints in the world.
Skaga Island
13 photos
In the Hecate Strait, off Haida Gwaii BC, Canada. A nice compact outcrop of columnar basalt. Home to a few trees and dozens of eagles.
Staffa
33 photos
The island of Staffa in Scotland. A wonderful place to see columnar joints and caves.
Devil's Postpile
5 photos
The Devil's Postpile is a nice outcropping of columnar joints near Yosemite in California. It is a National Monument.
Fissure 8, Lelani Estates, Hawaii
64 photos
A brief tour of Fissure 8, the main spatter cone of the 2018 eruption of Kilauea volcano on the big island of Hawaii.
Art and pattern formation
13 photos
Some art objects created with themes from the science of pattern formation.
The Wavefield
7 photos
Images of a landscape sculpture called 'The Wavefield" by Maya Lin, located on the campus of the University of Michigan, Ann Arbor.
See
www.pbs.org/art21/artists/lin/card2.html
Shells
20 photos
Fruit and vegetable textures
165 photos
For some reason, I am always taking pictures of fruit and veg. Who knows why.
Where is George Gabriel Stokes?
15 photos
George Gabriel Stokes was one of the titans of Victorian science, who made significant contributions to physics, mathematics, chemistry and engineering. He is responsible for the modern formulation...
tent at Riverdale Art Walk 2013
11 photos
My first show of my "scientific folk art"; an outdoor show in a park in Toronto.
See...