Great inventions

To come or light upon; to meet; to find.

the creation of something in the mind

the act of working out the form of something (as by making a sketch or outline or plan); "he contributed to the design of a new instrument"

any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks

motor that converts thermal energy to mechanical work

An instrument for reproducing sounds, especially articulate speech, at a distance.

equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and light-sensitive film at the other)

an assault in which the assailant makes physical contact

A circular frame turning about an axis; a rotating disk, whether solid, or a frame composed of an outer rim, spokes or radii, and a central hub…

the business of producing printed material for sale or distribution

an official document granting a right or privilege

a standard or typical example; "he is the prototype of good breeding"; "he provided America with an image of the good father"

any ornamental pattern or design (as in embroidery)