By Lajos Kovács, Dezső Csupor, Gábor Lente, Tamás Gunda
A hundred Chemical Myths bargains with renowned but mostly unfaithful misconceptions and misunderstandings on the topic of chemistry. It comprises lucid and concise reasons reduce via fallacies and concrete legends which are universally correct to a world viewers. a variety of chemical myths are explored in those components; nutrients, medicinal drugs, catastrophes, chemical substances, and environmental difficulties. Connections to pop culture, literature, video clips, and cultural historical past carry the reader’s curiosity when key techniques are fantastically annotated with illustrations to facilitate the certainty of unexpected fabric. Chemical Myths Demystified is pitched to contributors with no formal chemistry historical past to fledgling undergraduate chemists to pro researchers and past.
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Extra info for 100 Chemical Myths: Misconceptions, Misunderstandings, Explanations
The watt, unit for measuring power, the rate at which energy is developed or transferred from one form to another. ” The volt, unit of electromotive force, electric potential, or voltage. The ohm, unit of resistance to the flow of electricity. The farad, unit of electric capacitance. The weber, unit of magnetic flux (or flow). The henry, unit of electric inductance. The tesla, unit of magnetic flux density. Š In the realm of light measurement the SI provides, besides the basic candela of luminous intensity, the lux, unit of illumination.
The single-named units of the SI are combined readily and variously to provide compound units for the measurement of many important physical relationships. All of us are familiar with such compounds, for we speak of automobile speeds in miles per hour, or kilometers per hour. The equivalent, in basic SI units, is the compound meters per second. There are also triple-unit combinations in the SI, such as the newton-second per square meter, a suitable measure of the physical effect called kinematic viscosity.
However, some hogsheads actually held as much as 140 such gallons, and in the 20th century the British hogshead has been stabilized at 63 imperial gallons. The earliest prescription for hogshead capacity appears in a statute of 1423. Hogsheads, like gallons, long varied widely in capacity according to the liquid they were intended to contain. The ale hogshead once contained only 48 gallons; the beer hogshead outside London, 51 gallons; and the more generous London beer hogshead, 54 gallons. The next doubling brings us to the double hogshead, or pipe, sometimes known also as the butt.
100 Chemical Myths: Misconceptions, Misunderstandings, Explanations by Lajos Kovács, Dezső Csupor, Gábor Lente, Tamás Gunda