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The vibrating microtome operates by cutting using a vibrating blade, allowing the resultant cut to be made with less pressure than would be required for a stationary blade. The vibrating microtome is usually used for difficult biological samples. [18] The cut thickness is usually around 30–500 μm for live tissue and 10–500 μm for fixed ...
Tools. Tools. move to sidebar hide. Actions Read; Edit; View history; General ... Steel rule may prefer to: Steel rule die, a die made using a material called die steel;
The pygmy mammoth is an example of insular dwarfism, a case of Foster's rule, its unusually small body size an adaptation to the limited resources of its island home.. A biological rule or biological law is a generalized law, principle, or rule of thumb formulated to describe patterns observed in living organisms.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
A variety of rulers A carpenter's rule Retractable flexible rule or tape measure A closeup of a steel ruler A ruler in combination with a letter scale. A ruler, sometimes called a rule, scale or a line gauge or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. [1]
Different types of scissors – sewing (left), paper (middle), kitchen (right) A glass cutter, showing hardened steel cutting wheel (far left), notches for snapping, and ball (on end of handle) for tapping. Cutting is the separation or opening of a physical object, into two or more portions, through the application of an acutely directed force.
Falx was a synonym, but was later used to mean any of a number of tools that had a curved blade that was sharp on the inside edge. Since the beginning of the Iron Age hundreds of region-specific variants of the sickle have evolved, initially of iron and later steel. This great diversity of sickle types across many cultures can be divided into ...
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