Columbia Encyclopedia

(Encyclopedia) Blackburn, Elizabeth Helen, 1948–, Australian-American molecular biologist, b. Hobart, Tasmania, Australia, Ph.D. Cambridge, 1975. Blackburn was a professor at the Univ. of California, Berkeley, fro...

(Encyclopedia) power, electric, energy dissipated in an electrical or electronic circuit or device per unit of time. The electrical energy supplied by a current to an appliance enables it to do work or provide some ...

(Encyclopedia) Hale, Sarah Josepha (Buell), 1788–1879, American author, editor, and feminist, b. near Newport, N.H. In 1828 she became editor of the Ladies' Magazine, Boston, and in 1837 of Godey's Lady's Book, Ph...

(Encyclopedia) Taussig, Helen Brooke, 1898–1986, American physician, b. Cambridge, Mass., M.D. Johns Hopkins Univ., 1927. She spent her entire career at Johns Hopkins, where she founded the field of pediatric card...

(Encyclopedia) Thomas, Helen Amelia, 1920–2013, American journalist, b. Winchester, Ky., grad Wayne State Univ. (B.A., 1942). The daughter of Lebanese immigrants, she was a pioneering woman journalist in an era do...

(Encyclopedia) Jackson, Helen (Fiske) Hunt, 1830–85, American writer whose pseudonym was H. H., b. Amherst, Mass. She was a lifelong friend of Emily Dickinson. In 1863, encouraged by T. W. Higginson, Jackson began...

(Encyclopedia) Millin, Sarah Gertrude (Liebson), 1889–1968, South African writer. The first of her novels about colonial and racial problems in South Africa is Dark River (1920). Later novels include God's Stepchi...

(Encyclopedia) police power, in law, right of a government to make laws necessary for the health, morals, and welfare of the populace. The term has greatest currency in the United States, where it has been defined b...

(Encyclopedia) Norton, Caroline Elizabeth Sarah (Sheridan), 1808–77, English author; granddaughter of Richard Brinsley Sheridan. She gained more renown for her eventful life than for her writings. Her husband Geor...

(Encyclopedia) water power, mechanical energy derived from falling or flowing water, e.g., rivers, streams, and the overflow of dams. The wooden water wheel, long utilized for driving machinery in flour mills and fa...