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Physics

Dictionary - S

Second: It is an angular unit of measure also used to measure time intervals. The second is the duration of 9,192,631,770 radiation periods corresponding to the transition between two hyperfine levels of the ground state of the cesium atom 133. .
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Physics

Dictionary - M

Mass: Amount of matter that forms a body. magnetism: Property that some metal bodies have to attract and retain other metals and orient the magnetic needle in a north-south direction. Part of physics that deals with these phenomena. Group of phenomena resulting from the magnetic property of the magnet. Magneto: Electric generator that provides the necessary voltage to jump the spark in the motor.
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Physics

Resistors

They are parts used in electrical circuits whose main function is to convert electrical energy into thermal energy, that is, they are used as heaters or as heat sinks. Some examples of resistors used in our daily lives are: the filament of an incandescent lamp, the heater of an electric shower, the filaments that are heated in a greenhouse, among others.
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Physics

Carnot cycle

Until the mid-nineteenth century, it was believed that it was possible to build an ideal thermal machine, which would be able to transform all the energy supplied into work, obtaining a total yield (100%). To demonstrate that this would not be possible, French engineer Nicolas Carnot (1796-1832) proposed a theoretical thermal machine that behaved like a full yield machine, establishing a maximum yield cycle, which was later called the Carnot Cycle.
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Chemistry

Glycides (continued)

Cellulose Cellulose is a polysaccharide of chemical formula (C 6 H 10 O 5) n. It may have a molecular mass equivalent to 400,000u. It is present in almost all plants, being one of the main constituents of plant cell walls. It is formed by the condensation of a large number of glucose molecules.
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Chemistry

Macromolecules

Within Organic Chemistry, we study relatively small molecules as well as large ones. We call these molecules macromolecules. Macromolecules may also be called polymers. They are divided into natural and synthetic macromolecules. Natural macromolecules are fundamental biomolecules for all living things, as follows: - Glycides - Lipids - Proteins Synthetic macromolecules are the basis for the manufacture of plastics.
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