Edison General Electric push-keyed socket for medium-screw based incandescent lamp. Brass shell with plastic shell insulator, porcelain base, mica insulating sheet in socket, brass push-key with lever ...

As we enter a new era in lighting with the advent of solid-state illumination, the transition — while it will ultimately be rewarding is unlikely to be easy or simple. At issue are what changes to ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Edison General Electric keyed socket ...