Bacteriorhodopsin has the habit of changing from blue to pale yellow in an electric field, which might be useful in colour displays.
But the bugs can also be orange in colour and checked in pattern.
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Less well known, in part because one of his four original notebooks was until recently believed to have been lost, are the designs he made to be printed in colour on fabric.
Lifeboat crews must be aged between 17 and 45, live or work in Cleethorpes, be physically fit and not colour blind.
River dolphins of that colour can be spotted in the Amazon River.
And there are two days to go, when I expect Tom Daley to be among the medals for England, although which colour he will win in each of his events remains to be seen.
The firm has amended its plans after a public consultation, altering the size, colour and equipment to be used in the plant on the one-acre (0.4 hectare) site.
To save power, for instance, the XO's liquid-crystal display (the biggest consumer of juice in a laptop) can be flipped from backlit colour to self-reflecting monochrome.
Christie's specialist, Jean Marc Lunel, said the Archduke Joseph is prized because it boasts the highest quality of shape, colour and clarity that can be found in a diamond.
He argued that film editing was a kind of pictographic syntax, that in acting physiognomy was more important than psychology, and that the sound and colour design in a film should be treated as fully expressive elements in their own right.
While the majority of shells printed in this way are going to be simply for a unique colour, or to facilitate a design or etching on the back side of the smartphone, there are going to be some outlandish designs and ideas put into practice.
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But years later, in the courtroom, the issue of his colour could not be ignored.
In fact, the results would be very close to 50 of each colour.
Colour patterns on the wings of the butterflies may be crucial in forming new species, because they serve as mating cues.
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If there is sodium in the atmosphere, then there will be a little extra blockage of that colour during a transit.
And once again I would just appeal that everything that you undertake must be done in a peaceful and dignified manner, and not to bring any discredit on the colour which we wear.
It states that any planar map (that is to say, a flat one) can be coloured with at most four colours in a way that no two regions with the same colour share a border.
In the Linz steel plant, clean as a whistle and done up in a colour scheme recommended by a feng shui expert, there is hardly anybody to be seen.
Although much of the research in this area is still in its infancy, some experts predict that haptics will soon be as familiar a part of the computer desktop as colour graphics and stereo sound are today.
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