Abstract: A light clock measures time by having a light pulse source initiating a light pulse which travels a preset distance in an open or closed loop. A counter is increases incrementally upon detection of the light pulse by a light pulse detector. Each increment is a time interval, which is determined by the preset distance divided by the speed of the light pulse. If the loop is an open loop, another light pulse may be initiated upon detection of the previous light pulse. If the loop is a closed loop, no further light pulse initiation beyond the initial light pulse is required, but, when necessary, a light pulse amplifier is used to amplify the light pulse for the next cycle around the closed loop in the light pulse transmission device.

Abstract: A humidifier for use in humidors includes a fill chamber, an emission chamber having at least one absorbent body therein, at least one opening in the top of the emission chamber for diffusing water vapor therethrough, and an adjustment apparatus for adjusting and controlling the amount of water vapor entering the humidor through the opening. Absorbent bodies are preferably separated by at least one channel. The channel extends along the lengths of the absorbent bodies to increase the rate at which the absorbent bodies absorb water. The channel separates the absorbent bodies into separate elements. The humidifier comprises a housing defining a receptacle having an internal void volume for receiving material. The volume of the absorbent bodies, in combination, preferably comprises from about 35% to about 70%, and most preferably from about 40% to about 50% of the internal void volume of the receptacle.