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Two units of barometric pressure are millimeters of mercury (mm Hg) and inches of mercury (in Hg). As the pressure increases, the mercury rises higher in the barometer tube. The height of the mercury can be measured in either inches…
An audio amplifier is a device used to increase the volume of sound with low power so that it can be used in a loudspeaker. It is generally the final step in an audio feedback chain, or the movement of…
Symbiosis is when two organisms live together in a relationship in which at least one of them benefits. Sometimes, such as in the case of mutualism, they will be both benefit from the relationship. In instances of parasitism, one organism…
A dilution solution contains solute (or stock solution) and a solvent (called diluent). These two components proportionally combine to create a dilution. You can identify a dilution solution by the amount of solute in the total volume, expressed as a…
Using cosine on a calculator saves a lot of time compared to looking it up in a table, which people did before calculators. Cosine comes from a part of mathematics called trigonometry, which deals with the relationships between sides and…
Saltwater and metal do not mix, as it causes metal to corrode. Certain objects made of metal — like boat engines — spend a lot of time submerged in saltwater and they can corrode quickly. Simple maintenance keeps corrosion at…
Vertices or a vertex is the technical term used in geometry for the corner points of a solid shape. A technical word is used to prevent confusion that might be used if the word “corner” was used is a description…
A gorge is a steep-sided, narrow valley with a river or stream running along the bottom. Gorges are formed by the interplay of several geological processes, including erosion, tectonic processes such as vertical uplift and cavern collapse. Erosion by the…
Whales are polygamous mammals, with females giving birth to live young and nursing them for several months. During breeding season, the male, or bull whale, copulates underwater with the female, or cow, in a complex mating ritual that varies widely…
Imagine this: You need to unscrew a bolt from a wooden plank. You find the correctly sized wrench and secure it to the bolt. In order to begin to loosen the wrench, you need to hold the handle and pull…
