Anything that does not allow permeation of water or other liquids. So think dense, thick, solid, smooth, or sealed surfaces
Examples:
metals:
stainless steel
steel
aluminum
chrome
vinyl
finished wood
laminate countertops
certain types of tiles or tiles that have been sealed to be nonporous (e.g. bathroom or kitchen tiles)
certain types of paper
glass
porcelain
Four.
There are many types of sponges you can use for cleaning. Examples of these are cellulose sponges, abrasive sponges, natural sponges, and dry sponges. The best one would depend on the cleaning surface. It is best to use soft sponges such as the natural sponge to clean fragile surfaces. To clean rough surfaces an abrasive sponge would do the trick.
A dry lubricant is a material that is able to reduce friction between two surfaces without the need for a liquid-based lubricant. Examples include graphite and molybdenum disulfide, the two most common dry lubricants, but hexagonal boron nitride and tungsten disulfide can also be used.
Some friction will occur with seemingly smooth surfaces because at a molecular level, nothing is smooth.
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Anything that does not allow permeation of water or other liquids. So think dense, thick, solid, smooth, or sealed surfaces Examples: metals: stainless steel steel aluminum chrome vinyl finished wood laminate countertops certain types of tiles or tiles that have been sealed to be nonporous (e.g. bathroom or kitchen tiles) certain types of paper glass porcelain
Yes, we generally consider stainless steel to be a nonporous surface.
Epoxy glue can be used at a crime scene to lift latent fingerprints from nonporous surfaces. It is applied over the fingerprint, allowed to harden, and then peeled off to preserve the print before it is examined by forensic experts.
Examples of impermeable surfaces include concrete, asphalt, metal, and plastic. These surfaces do not allow water to pass through, leading to increased surface runoff and potential flooding.
Hard non-porous surfaces are rigid and do not allow liquids or gases to pass through, such as glass or metal. Soft non-porous surfaces are flexible but still do not allow liquids or gases to pass through, like plastic or leather. Both types of surfaces are easy to clean and maintain.
Some examples of relatively high friction surfaces are: sand paper, grass, and asphalt. In general, the rougher the surface, the more friction it has.
Drywall is VERY porous .
Stainless steel is a good material for easy cleaning as it is nonporous and does not absorb dirt or grime. Other materials that are easy to clean include glass and ceramic due to their smooth surfaces that can be easily wiped down.
Examples of things with smooth surfaces include glass windows, polished metal surfaces, ceramic tiles, and marble countertops.
A cone, cylinder and a sphere are three examples.
Sandpaper and asphalt both have relatively high coefficients of friction.
No, Stainless steel is not porous. Steel how ever is.