everyday objects
6 questions tagged everyday objects — spanning every one of the seven Ws.
Whose Invention Was the Safety Pin?
The modern safety pin was invented by American mechanic Walter Hunt, who patented it in 1849.
Whose Invention Is the Ballpoint Pen?
The modern ballpoint pen was invented by Hungarian journalist László Bíró, who patented it in Britain in 1938.
Whose Invention Was the Modern Pencil?
The modern pencil lead was invented by French scientist Nicolas-Jacques Conté in 1795, who mixed graphite with clay and fired it.
Whose Company Created Crayola Crayons?
Crayola crayons were created by cousins Edwin Binney and C. Harold Smith of the Binney & Smith company, first sold in 1903.
How Are Pencils Made?
Pencils are made by sandwiching rods of baked graphite and clay between grooved wooden slats, then gluing, cutting and painting them.
How does a zipper work?
A zipper joins two rows of teeth by forcing them together with a sliding piece called the slider. The slider interlocks and separates the teeth as it moves.