Probably the most advantageous and valuable of all the features of Prussian blue was its versatility, the most searched-for quality in colourants.
While indigo was mostly used for dyeing textile in eighteenth-century England, Prussian blue was applied for an impressive number of purposes:. The pigment [Prussian blue] has been busy colonising other industries too: it has long been used in wallpapers, house paints and textile dyes. John Herschel, a nineteenth-century British chemist, astrologer and photographer, worked out how to use it in combination with photosensitive paper to make a kind of proto-photocopy. It was Claude Joseph Geoffroy who first had the idea of producing Prussian blue on an industrial scale for textile dyeing, similarly to indigo Delamare Most of the evidence for the use of Prussian blue in textiles comes from objects, except for prize-winning essays and theses that discuss both the use of pigments and other aspects of the textile industry Lowengard, ch.
InMacquer reportedly applied Prussian blue to wool and silk Fairliewhile according to Ball Prussian blue was mainly used for silk Apart from that, eighteenth-century indiennes 6 often employed Prussian blue instead of indigo, which could not meet the requirements of these techniques Lowengard, ch.
Additionally, unlike indigo or Saxon blue, 7 dyeing textiles with Prussian blue meant that various shades of blue could be obtained Delamare Finally, Prussian blue was famously used in colour printing. Its method of colour printing consisted of using three plates corresponding to the three primary colours, blue, yellow, and red, utilising Prussian blue as one of the primary colours Gage Nonetheless, blue pigments are scarce in nature.
Although blue-coloured objects may be abundant, this rarely means that they contain blue substances; more often, their blue colour is due to the reflection of blue light. In addition to this scarcity in nature, for centuries, the blue palette depended entirely on natural sources of blue colourants. The example of indigo dyestuff in the eighteenth century shows how implant mammaire silicone rupture 5.4 the quest for natural pigments proved to be and how greatly it depended on natural and human factors.
The unintentional discovery of Prussian blue, on the other hand, demonstrated the advantages of synthesised pigments, which could be controlled comparatively easily and had virtually no dependence on external factors such as political situations, wars, uprisings, or other difficulties that affected indigo cultivation and trade. Inspired by the lucky discovery of Prussian blue and motivated by the growing need for colourfast and affordable colourants, scientists continued their investigations, and more artificial blue colourants were added to the blue palette in the following century.
Balfour-PaulJenny. Egyptian Mummies to Blue Jeans. London: British Museum, BallPhilip. Bright Earth: The Invention of Colour. Chicago: U of Chicago P, BardwellThomas.
London: BerlinBrent, and Paul Kay. Basic Colour Terms. Their Universality and Evolution. DelamareFrançois. Bleus en poudres. DossieRobert. The Handmaid to the Arts. London : Internet Archive. FairlieSusan. FallonBreann. FellerRobert L. A Handbook of their History and Characteristics.
Washington: National Gallery of Art, GageJohn. Colour and Culture. Practice and Meaning from Antiquity to Abstraction. HellerEva. Psychologie de la Couleur. Effets et Symboliques. KirbyJ. LehmanChristine. LowengardSarah. Columbia UP, MartinMarguerite. MavorCarol. Blue Mythologies: Reflections on a Colour. London: Reaktion Books, Botox vraskyConstant de.
London: T. Baylis, Afficher les exemples de la traduction azo Adjectif exemples concordants. Afficher les exemples de la traduction azoic Adjectif 7 exemples concordants.
Afficher les exemples de la traduction azo-based 4 exemples concordants. Afficher les exemples contenant azo-type 9 exemples concordants. La présente invention concerne un procédé de production hautement efficace d'une dispersion aqueuse de pigment contenant un colorant azoïque. A process for highly efficiently producing an aqueous pigment dispersion containing an azo dye.
La première période de création est proprement appelée azoïquequi veut dire sans vie. The first creative period is properly described as azoicmeaning lifeless. Cette première époque ou jour de la Genèse est scientifiquement décrit comme azoïqueou sans vie. This first period, or day, of Genesis, is scientifically described as azoicor lifeless.
Une teinture orangée azoïque et métallisable pour réseaux de filtres-couleur est décrite. A metallizable orange azo dye for color filter arrays is disclosed. Le colorant est le pigment azoïque. The colorant is the azo pigment. Le mot de l'exemple n'est pas le même que le mot recherché.
La phrase est offensante ou présente du contenu offensant. Annuler Envoyer. Your feedback will be reviewed. Melanin is the dark brown pigment of the hairskinand eyes that is present in varying amounts in every human being.
Pigment is mixed into oilglueeggetc. Related word pigmented. Pigment is also the substance in a paint or dye that gives it its color. Spectral tuning of pigments underlying red-green color vision. De Cambridge English Corpus.
Pigment dyed meaning
Spectral tuning in salamander visual pigments studied with dihydroretinal chromophores. Aucune opinion exprimée dans les exemples ne reflète l'opinion des éditeurs de Cambridge Dictionary, de Cambridge University Press ou de ceux leur ayant concédé une license. Two approaches have been implemented to generate spectral extinction functions for cone pigments. Thus, the question is not why hypopigmented animals have elevated thresholds compared to pigmented animals, but rather, what causes their reduction in rhodopsin expression?
The supernatant was filtered in the presence of polyvinyl polypyrrolidone and activated carbon to eliminate pigments and polyphenols. Photosynthetic light-harvesting pigment -protein complexes : toward understanding how and why. Photoreceptors recover from pigment adaptation after replacement cis retinal, supplied by pigment epithelial cells, regenerate the visual pigment, and quench opsin's activity. The apparent ordering of pigment layers was observed wherever figures overlapped. A back-propagation neural network predicts absorption maxima of chimeric human red0green visual pigments.
The text does not elaborate on the difference between mixtures of pigments and mixtures of spectral light.