NEXT EVENTS:

FOUR COLOUR MEETINGS this summer
sponsored by the CG(GB)

16th International Symposium on the Science and Technology of Lighting
Monday to Friday 17-22 July 2018
University of Sheffield

International Colour Vision Society Summer School
Monday to Friday 30 July to 03 August 2018
Pembroke College, Oxford

Celebrating 100 Years of Munsell with the Society of Light and Lighting
Thursday 05 July 2018
Venue to be announced

Gruppo del Colore - XIV Colour Conference
Tuesday to Wednesday 11-12 September 2018
Florence


The next local event is:
SOME COLOURFUL WORDS
Wednesday 03 October 2018
City University London,
London, EC1V 0HB
Words in colour and in poetry inspired by colour
Details will appear later this summer


RECENT EVENTS:
COLOUR IN ITS PLACE & AGM
Wednesday 02 May 2018
City University, London

After the AGM, which for the first time in many years involved a ballot for an officer post, Andrew Hanson of the NPL, Teddington, delivered a most entertaining and thought provoking talk. What are the primary colours? What do you see in different situations? He managed to catch out most of the great and the good of the Colour Group present with some apparently most simple questions that are, in fact, not at all simple to answer. The audience retired to the tea to discuss the impications of Andrew's questions.
Below left is a photo of Andrew and a colourful bouquet - lovely!
Andrew and flowers mirror

On the right above is a photo of a dusty mirror especially brought in by a member to intrigue people over tea, Ordinary mirror, ordinary white torch, ordinary dust - but note, the coloured bands.
Our member, Ed, offers the following explanation:
When I chanced upon a dusty mirror in a charity shop I immediately bought it, strongly insisting it wasn't to be wiped clean or wrapped! I wanted to use it for demonstrating a colourful interference pattern named after the astronomer Adolphe Quetelet, who observed the phenomenon and explained its formation.
Quetelet rings arise from interference of the light that is first scattered by a particle and then reflected by the surface, with the light that gets first reflected and then scattered by the particle. Contributions of these two paths to the scattering differ by a phase factor that depends on the wavelength and the angles of light incidence and scattering. Depending on the phase difference, these contributions may interfere constructively (contributing to a white band) or destructively (contributing to a black band). In the case of illumination by white light the patterns produced by different wavelengths are slightly misaligned with each other and that results in a colouring of the rings.
The pattern requires a mirror with the reflecting surface on the back, which is the case for ordinary glass mirrors. I sprinkle on talcum powder and smear it over the surface. Wikipedia has a video demonstrating Quetelet rings as seen on a mirror covered in flour while a flashlight is moved around the observer.


COLOUR IN ART
Wednesday 04 April 2018
City University, London
Anne Jackson started the afternoon by describing her fascination with whitchcraft inspired by the records of whitch trials. She developed a form of knotted tapestry and showed many examples of these, the first being of a flying whitch and the magic word, derived from the Arabic, that everybody knows. She went on to show tapestries of whitches, their fates and their familiars. And some rather scray stuff too.
scary
Jackson
abracadabra tapestry
OReilly OReilly
OReilly Philip O'Reilly, who had organised the event, was the middle speaker and described his extensive tour of Turkey where he studied how traditional methods, though simple, made wonderful carpets. He sketched, painted and wove his way around the counrty and has subsequently experimented with felting and more recently many different kinds of textiles and holographic foils.
Margot Selby described her development from art student to a professional fabric designer working for well known international companies. She showed some of the sources of her inspiration (SEE BELOW) and admitted that she was always striving to make creative art with coloured fabrics but that designing for the commercial world paid the bills. She has recently developed a series of designs which when framed under glass were clearly more art than commercial (BELOW RIGHT). Selby
Design Art at last

THIRD INTERNATIONAL CONFERENCE -
COLOUR IN FILM
Monday-Wednesday 19 - 21 March 2018
BFI Southbank & Birkbeck, London
The annual conference Colour in Film continues to grow in popularity and was a complete sellout before the opening. The UK premiere of the newly restored 1943 film of Josef von Báky Münchhausen, part of the conference programme, also sold out.
Opening session Colour Theory
The conference was opened by Elza Tantcheva-Burdge and Ulrich Ruedel. The Keynote speaker was Giovanna Fossati reviewing research into the colours of silent cinema. The BFI shop organised a signing session for her book at the end of Day1. The delegates were given plenty of networking opportunities at the reception in the Blue Room of the BFI Southbank
Munchausen
During Day 2 and Day 3 there was a two-day workshop organised by Barbara Flueckiger and the rest of the team from the FilmColors project. The Colour Group (GB) Keynote speaker this year was Mike Pointer. He spoke on the theme of Colour Spaces and Colour Appearance and was followed by a talk on colour processing in digital motion picture cameras presented by Harald Brendel of ARRI and a report on the progress of the project led by Sarah Street – Eastman Colour Revolution and British Cinema. This last session was also the Colour Group (GB)'s contribution to the celebration of the International Colour Day.

NEWS
Queens silks

COLOURS FOR RACE HORSES

I guess we all know jockeys on race horses wear coloured tunics (pictured here are the Queen's registered silks) - but what was the origin of all these colours? Thanks to the Daily Mail we know a bit more:

Racing silks first appeared in Britain in 1515 when Henry VIII was on the throne. The frequency of race meetings and the number of horses in each race led to confusion, so in 1762, the English Jockey Club at Newmarket requested that owners submit specific colours for their jacket and cap. There are 18 basic colours that can be used in conjunction with 27 jackets and nine cap designs. Shapes and patterns may also be used, such as checks, diamonds, cross-belts, crosses and circles, together with epaulets and braiding. However, the jockey's breeches must always be white. To ensure the design is unique and has not been assigned to someone else, racehorse owners have to register their chosen design of silks with the Jockey Club and Weatherbys.... Colours can be registered for a year, five years, ten years or life. Unlike horses' names, they can be taken by someone else if you cancel your registration. If the owner has more than one horse in the same race, the jockeys wear different coloured cap covers to avoid confusion. Steve Woods, King's Lynn, Norfolk. The Daily Mail, 10 May, 2018.
14-05-18


MOST POPULAR CAR COLOUR 2017

RR


RACreports the most popular car colour is now grey - but is grey really a colour? Answers on a postcard etc, etc.
24-04-18




purple 2018

WE LIKE TO KEEP YOU INFORMED . . . .

OKso you probably missed out on the announcement of the Pantone Colour of the Year what with the Beast from the East, One and Two, and Easter, etc, but this year's colour is Pantone UltraViolet, or simply purple to most people. May be the Royal Wedding had something to do with the choice.
11-04-18


statue

ANCIENT ASSYRIAN RELIEFS COLOURED

The Bowdoin College Museum of Art (Brunswick, Maine, USA) has developed a technique using a projector to give visitors an impression of what 3,000-year old Assyrian stone reliefs would originally have looked like in full colour. The work is reminiscent of that described to the CG(GB) in 2013 by Patrick Callet (Paris) - see Spectral Simulation for Cultural Heritage, CG Occasional Publication number 3, which may be downloaded.
12-03-18


The Bishop
"How we explored medieval theories of colour through glass"

This is the title of an article about a new exhibition which is based on the ideas of what colour is as put forward in the 13th century by Bishop Grosseteste. Get yourself a piece of history and click the link.
17-02-18


HEARD THE DINOSAURS WERE COLOURED?

dinosaur

It seems the great lizards did exhibit surface colours but not quite in the way a good Colour Group members might wish with high chromatic values from across the spectral gamut like our trichromatic friend here. Bone up on the real research in Current Biology (here) or a simpler version from ABC (here).
27-10-17


RGB bacteria

GENETICALLY MANIPULATED BACTERIA DISPLAY COLOURS

In a study published in Nature Chemical Biology, MIT researchers manipulated E coli genes so that they respond when illuminated by red, green, or blue light they fluoresce red, green or blue. So a coloured image projected onto a bacterial mat causes the bacteria to emit red, green or blue light thus becoming a living display. This won't replace LED or plasma screens but is a useful step on the road to fully understanding gene manipulation. If you can stomach the breathless journalism you can read more at on the ARS Technic UK web pges or better, read the original.
28-05-17


greenPANTONE COLOR OF THE YEAR

Iguess you all know what the Pantone Color of 2017 is - see left. If you want to see a feast of green visit the Pantone web pages by clicking here.
But can you remember what the colour of the year was in 2010? The table below will jog your reluctant memory. 28-04-17
Pantone table


HISTORY OF COLOUR PRINTING COURSE

The history of printing is not in black and white. Colour played an essential role in print culture even before Gutenberg printed his Bible, but it has long been hidden in plain sight because colour printing is rarely recorded. old colour print
This interdisciplinary, introductory course provides an overview of colour printing techniques in the West from manual techniques c.1400 through the development of chromolithography in the mid-1800s.
The Institute of English Studies, University of London, is offering this week-long course running 10 to 14 July as part of the London Rare Books School (LRBS), with reduced fees for students. Further details at here. Other courses at this year's LRBS can be found here: here.
22-02-17


biomimetics logo

OPTICAL BIOMIMETICS
at Imperial College:
CG(GB) Sponsors Prizes

The CG(GB) has agreed to sponsor two student prizes for the meeting at IC. The meeting is described so:
Ever since humans contemplated replicating the flight of birds, biomimetics has sought solutions to complicated problems by examining how Nature, with the advantage of several millions of years of evolution, has tackled them before. Nowhere is this more apparent than in optics where some of the rich optical behaviour presented through evolutionary nano-structuring can now be replicated to our advantage in the laboratory. Structural colouration of morpho butterfly wings, for example, was recently commercialized to produce interferometric modulation to define pixel colouration in displays.
Click for more details of the meeting.
04-02-17

DATE 21 May 2018