Dr Feld also has plans to use beams of different colours, since each colour has a slightly different refractive index in a given material.
Sending large amounts of information down an optical fibre is done by encoding many separate streams of data as pulses of light of different colours, so that they can travel along the fibre without interfering with each other.
ECONOMIST: Optical fibres could carry more information in the future
Of course it will be a shock for him to be playing in different colours and in front of different fans after 13 years at Highbury.
Roxanne takes a second black velvet-lined box out, one containing several pieces of translucent jade of different shapes, colours and sizes.
These can be modified to produce different colours of light, too, but they have not taken off quickly because they can be hard to package.
Five to seven years of this, with each bit of the sky being recorded in five different colours, should be enough to complete coverage of a quarter of the sky.
ECONOMIST: The Sloan star survey: An intergalactic cruise | The
He thinks that useful languages should allot words in order to minimise the perceptual difference between colours of the same category, and maximise it between colours in different categories.
The free Who Is It app customises this functionality further, so the light blinks in one of three colours for up to three different people.
Although the Jpeg format later caught on because it is better at compressing photographs, Gif's technique remains superior at tackling images containing large areas of uniform colour when no more than 256 different colours are used in the whole picture.
He keeps ant colonies in little plastic boxes, and he paints his ants different colours (using a brush the size of a human eyelash) so he can watch what each one does.
BBC: NEWS | Science/Nature | Ants - learning from the collective
Apple offers a range of prices and capacities, with and without 3G, and now 2 different colours.
It consists of 40 upright metal poles, which are supposed to light up in different colours at night.
The Potatohontus Native American Village comprises six different tipi tents, each one hand painted in the national colours of its tribe.
By integrating the individual pressure distributions, the software can produce a visual picture of the flow over the car's various components with the pressure changes shown as different colours in the flow pattern (see illustration).
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