Projection Clock

A projection clock (also called ceiling clock) is an analog or digital clock equipped with a projector that creates an enlarged image of the clock face on any suitable projection screen, most often the ceiling.

The advantage of a projection clock is that the "clock" can be placed almost anywhere. Depending on the projector used, the image can be in monochrome or color. The image generated by most projection clocks is large enough that a nearsighted person can see it from distance without glasses or contact lenses.

Projection clocks are also used in advertising and merchandising. High-brightness analog projection clocks can superimpose a business' logo on top of the clock face, while there are low-brightness projection clocks designed for home use that project for example a logo in addition to the time.

Projection clocks may be connected to and synchronize with an Atomic clock to self adjust their time accurately.

Read more about Projection Clock:  History, Technology

Famous quotes containing the words projection and/or clock:

    In the case of our main stock of well-worn predicates, I submit that the judgment of projectibility has derived from the habitual projection, rather than the habitual projection from the judgment of projectibility. The reason why only the right predicates happen so luckily to have become well entrenched is just that the well entrenched predicates have thereby become the right ones.
    Nelson Goodman (b. 1906)

    The stars move still, time runs, the clock will strike,
    The devil will come, and Faustus must be damned.
    O I’ll leap up to my God: who pulls me down?
    See, see, where Christ’s blood streams in the firmament.
    One drop would save my soul, half a drop, ah my Christ.
    Christopher Marlowe (1564–1593)