Abstract: Among other things, there is a stationary light source, a stationary aperture between the light source and a projection surface, and a device to modulate light from the light source that passes through the aperture and strikes the projection surface to cause a light effect on the projection surface. In some cases, projected motion and/or twinkling effects are produced in a simple, low-cost and durable manner.
Abstract: A programmable, microprocessor-based alarm clock apparatus provides seven independent alarms each one of which is specifically tied to one of the seven days of the week. Each alarm may be independently set in terms of appointed alarm-sounding time and active state (either on or off).