Thirteen artifacts from the National Museum of American History chronicle profound changes in the life of the nation Photographs by Jessica Antola by Robin Marantz Henig The sexual revolution didn’t ...

Lock classes The following lock class provides member functions ref (), operator* (), and operator-> () to obtain a reference to the exclusively controlled object. These are the only ways to access an ...

Light comes from the Sun, stars, fires, light bulbs and more. It helps us see everything around us. Shadows are made when something blocks light. They look like dark shapes on the ground or walls.

ADD CONSTRAINT annotation_ref FOREIGN KEY(_annotation) REFERENCES webknossos.annotations(_id) ON DELETE CASCADE DEFERRABLE, ADD CONSTRAINT user_ref FOREIGN KEY(_user) REFERENCES webknossos.users(_id) ...