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Streak plates with pyrite (left) and rhodochrosite (right). The streak of a mineral is the color of the powder produced when it is dragged across an unweathered surface. Unlike the apparent color of a mineral, which for most minerals can vary considerably, the trail of finely ground powder generally has a more consistent characteristic color, and is thus an important diagnostic tool in mineral ...
In microbiology, streaking is a technique used to isolate a pure strain from a single species of microorganism, often bacteria. Samples can then be taken from the resulting colonies and a microbiological culture can be grown on a new plate so that the organism can be identified, studied, or tested.
An inoculation loop (also called a smear loop, inoculation wand or microstreaker) is a simple tool used mainly by microbiologists to pick up and transfer a small sample of microorganisms called inoculum from a microbial culture, e.g. for streaking on a culture plate. [1] [2] This process is called inoculation.
Streaking is the act of running naked through a public area for publicity, for fun, as a prank, a dare, a form of protest, [1] or to participate in a fad. Streaking is often associated with sporting events [citation needed], but can occur in more secluded areas. Streakers are often pursued by sporting officials or the police.
By definition, different streamlines at the same instant in a flow do not intersect, because a fluid particle cannot have two different velocities at the same point. Pathlines are allowed to intersect themselves or other pathlines (except the starting and end points of the different pathlines, which need to be distinct).
Streak or streaking may refer to: Streaking, running naked in a public place; Streaking or surfactant leaching in acrylic paints; Streaking (microbiology), a method of purifying micro-organisms; Streak (mineralogy), the color left by a mineral dragged across a rough surface; Streak (moth), in the family Geometridae; Streak, a 2008 film
Streak plate may refer to: In streaking (microbiology), the plate used to incubate a culture and isolate a pure strain; In streak (mineralogy), the plate used to ...
Latex-painted bathroom wall leaching surfactants, following water vapor condensation. Surfactant leaching of acrylic (latex) paints, also known as exudate staining, [1] streak staining, streaking, weeping, exudation, etc., occurs when the freshly painted surface becomes wet and water-soluble components of the paint (dispersants, surfactants, thickeners, glycols, etc.) leach out of the paint in ...