American-born British public official and physicist who conducted numerous experiments on heat and friction, concluding that heat is produced by moving particles. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
American swimmer who won twelve Olympic medals, including eight gold medals in relay events at the 1992, 1996, and 2000 games. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
American journalist whose radio broadcasts and widely syndicated column "On the Record" (1936-1941) informed Americans of the impending threat of Nazi Germany. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Canadian explorer who followed the Columbia River to its mouth (1811) and mapped much of western Canada. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.