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law of simple multiple proportions

(Encyclopedia)law of simple multiple proportions, in chemistry, the statement that when two or more elements form more than one compound, the ratio of the weights of one element that combine with a given weight of ...

Hays, Will H.

(Encyclopedia)Hays, Will H., 1879–1954, American politician and motion-picture executive, b. Sullivan, Ind.; his original name was William Harrison Hays. Hays became active in Indiana political affairs, was chair...

Muybridge, Eadweard

(Encyclopedia)Muybridge, Eadweard ĕdˈwərd mīˈbrĭj [key], 1830–1904, English-born photographer and student of animal locomotion. Muybridge changed his name from Edward James Muggeridge. A gifted and obsessed...

mass, in physics

(Encyclopedia)mass, in physics, the quantity of matter in a body regardless of its volume or of any forces acting on it. The term should not be confused with weight, which is the measure of the force of gravity (se...

Toledo, Francisco de , Spanish viceroy of Peru

(Encyclopedia)Toledo, Francisco de fränthēˈskō ᵺā tōlāˈᵺō [key], 1515?–84, Spanish viceroy of Peru (1569–81). He came from one of the noblest families of Spain and had served Charles V and Philip I...

press, freedom of the

(Encyclopedia)press, freedom of the, liberty to print or to otherwise disseminate information, as in print, by broadcasting, or through electronic media, without prior restraints such as licensing requirements or c...

fluid mechanics

(Encyclopedia)fluid mechanics, branch of mechanics dealing with the properties and behavior of fluids, i.e., liquids and gases. Because of their ability to flow, liquids and gases have many properties in common not...

Fitzgerald, George Francis

(Encyclopedia)Fitzgerald, George Francis, 1851–1901, Irish physicist. Fitzgerald was born in Dublin and studied and taught at Trinity College there. He is best known for suggesting how the ether, by causing the c...

guidance and counseling

(Encyclopedia)guidance and counseling, concept that institutions, especially schools, should promote the efficient and happy lives of individuals by helping them adjust to social realities. The disruption of commun...

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