Blackboard



a sheet of smooth, hard material, especially dark slate, used in schools, lecture rooms, etc., for writing or drawing on with chalk.
Contemporary Examples

Meal Deal Sites and How to Use Them Wisely Maggie Nemser April 14, 2011
9 Most Annoying Celebrity Laughers Jaimie Etkin October 27, 2011
Worst Sex Writing of the Year Olivia Cole December 1, 2009
Stonewall Jackson, VMI’s Most Embattled Professor S. C. Gwynne November 28, 2014
On the Canadian Border, It’s Pancakes for Every Meal Jane & Michael Stern July 5, 2014

Historical Examples

Ten Tales Franois Coppe
David Dunne Belle Kanaris Maniates
Cornish Saints and Sinners J. Henry Harris
Common Science Carleton W. Washburne
Oscar Walter Aimwell

noun
a hard or rigid surface made of a smooth usually dark substance, used for writing or drawing on with chalk, esp in teaching
n.

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    a hypothetical body that absorbs without reflection all of the electromagnetic radiation incident on its surface. blackbody (blāk’bŏd’ē) A theoretically perfect absorber and emitter of every frequency of electromagnetic radiation. The radiation emitted by a blackbody is a function only of its temperature.



  • Black–body

    a hypothetical body that absorbs without reflection all of the electromagnetic radiation incident on its surface. Contemporary Examples Inside Philip Seymour Hoffman’s Apartment Michael Daly February 1, 2014 Historical Examples Moran of the Lady Letty Frank Norris Fantazius Mallare Ben Hecht Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 Various Life On The Mississippi, Complete […]

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