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2. Spray paint - Wikipedia

   en.wikipedia.org/wiki/Spray_paint

   Spray paint is a popular medium among graffiti artists due to its portability, permanence, and speed. The product's presence in the United States goes back to 1949, when it was designed with the purpose of painting radiators with aluminum paint. [6] Speed, portability, and permanence make aerosol paint a common graffiti medium. In the late ...

3. Anti-graffiti coating - Wikipedia

   en.wikipedia.org/wiki/Anti-graffiti_coating

   The first are water-based paints such as latex and acrylic paint, and the second are oil-based paints. The paint of choice will depend on the substrate to be painted upon and the desired end result. All paints have the same basic structure: Pigment – this is the part of the paint that is seen by the eye. The pigment gives the paint opacity ...

4. Acarospora - Wikipedia

   en.wikipedia.org/wiki/Acarospora

   Acarospora is a genus of mostly lichen-forming fungi in the family Acarosporaceae. Most species in the genus are crustose lichens that grow on rocks in open and arid places all over the world. [2] They may look like a cobblestone road or cracked up old paint, and are commonly called cobblestone lichens or cracked lichens.

5. Spray painting - Wikipedia

   en.wikipedia.org/wiki/Spray_painting

   Spray painting is a painting technique in which a device sprays coating material (paint, ink, varnish, etc.) through the air onto a surface. The most common types employ compressed gas—usually air —to atomize and direct the paint particles.

6. Aerosol spray dispenser - Wikipedia

   en.wikipedia.org/wiki/Aerosol_spray_dispenser

   A typical paint valve system will have a "female" valve, the stem being part of the top actuator. The valve can be preassembled with the valve cup and installed on the can as one piece, prior to pressure-filling. The actuator is added later. Modern aerosol spray products have three major parts: the can, the valve and the actuator or button.

7. List of common names of lichen genera - Wikipedia

   en.wikipedia.org/wiki/List_of_common_names_of...

   This is a list of common names of lichen genera. When a common name for a lichen genus is the same as the scientific name for that genus, it is not included in the following list. This list only includes genera common names that are widely used, as indicated by the common name either appearing in a peer reviewed scientific publication or in a ...

8. Lead-based paint in the United States - Wikipedia

   en.wikipedia.org/wiki/Lead-based_paint_in_the...

   The District of Columbia defines "lead-based paint" as any "paint, surface coating that contains lead equal to or exceeding 0.7 milligram per square centimeter (0.7 mg/cm2) or 0.5% by weight." [9] This is more stringent than the HUD lead-based paint standard of 1.0 mg/cm2) . Some states have adopted this or similar definitions of "lead-based ...

9. Lichen - Wikipedia

   en.wikipedia.org/wiki/Lichen

   A fruticose lichen may have flattened "branches", appearing similar to a foliose lichen, but the underside of a leaf-like structure on a fruticose lichen is the same color as the top side. The leaf-like lobes of a foliose lichen may branch, giving the appearance of a fruticose lichen, but the underside will be a different color from the top side.