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A single iridescent species of gecko, Cnemaspis kolhapurensis, was identified in India in 2009. [22] The tapetum lucidum , present in the eyes of many vertebrates, is also iridescent. [ 23 ] Iridescence is known to be present among prehistoric non-avian and avian dinosaurs such as dromaeosaurids , enantiornithes , and lithornithids . [ 24 ]
The effect is visible already at concentrations of 0.1% in the paint system. The intensity is steadily increased up to pigment concentrations of about 2%. The single light spots arising from the pigment structure and orientation in the paint system seem to spring back and forth when a painted metal plate is tilted.
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Flakes with different colour effects may also be used within the same paint. [3] Pearlescent paint uses embedded pieces of iridescent material to produce subtly different colours depending on the angle and intensity of the light. More radical colour changes and "two-tone" or "flip" colours (e.g. from purple to orange) are sometimes produced.
This paint is harder to manage than solid paints because of the extra dimensions to consider. Metallic and pearlescent paints must be applied evenly to ensure a consistent looking finish without light and dark spots which are often called "mottling". Metallic basecoats are formulated so that the aluminium flake is parallel to the substrate.
Red acrylic paint squeezed from a tube Example of acrylics applied over each other. Experimental pictures with "floating" [1] acrylic paint Acrylic paint is a fast-drying paint made of pigment suspended in acrylic polymer emulsion and plasticizers, silicone oils, defoamers, stabilizers, or metal soaps. [2]
Thank you for standing by, and welcome to the Chubb Ltd. fourth quarter 2024 earnings conference call. [Operator instructions] Thank you. I'd now like to turn the call over to Karen Beyer, senior ...
Radioluminescent paint is a self-luminous paint that consists of a small amount of a radioactive isotope (radionuclide) mixed with a radioluminescent phosphor chemical. The radioisotope continually decays, emitting radiation particles which strike molecules of the phosphor, exciting them to emit visible light.