A timing device comprises a sensing material and/or a component which is sensitive to the presence of an environmental attribute. The environmental attribute drives and speeds up or slows the timing device as the concentration of the attribute increases or decreases, respectively. Alternatively, the timing device is activated upon sensing the presence of the environmental attribute and indicates a total passage of time from exposure/activation of the timing device. Particularly, sensing materials of varying types are able to be used to indicate exposure to a variety of substances. For example, in some embodiments, the timing device comprises a sensing material which is sensitive to the presence of ultraviolet radiation. Alternatively, the sensing material is sensitive to other variables such as x-ray radiation and nuclear radiation. In further embodiments, the sensing material is sensitive to biological or physical contamination.

A time validation indicator is disclosed comprising at least a receiving layer and an activating layer. The receiving layer comprises at least one or more masking colorants and one or more deactivators that cause and maintain the one or more masking colorants in an initial colored state. The activating layer comprises at least one or more migratory activators that migrate into the receiving layer upon at least a portion of the receiving layer being placed in contact with at least a portion of the activating layer to initiate a predetermined time period. The migration of the one or more migratory activators into the receiving layer causes at least a portion of the one or more masking colorants to advance to a final colorless state resulting in a visual color change of the receiving layer that indicates the predetermined time period has elapsed. Also disclosed are methods for creating and using the inventive time validation indicator.

A time validation indicator is disclosed comprising at least a receiving layer and an activating layer. The receiving layer comprises at least one or more masking colorants and one or more deactivators that cause and maintain the one or more masking colorants in an initial colored state. The activating layer comprises at least one or more migratory activators that migrate into the receiving layer upon at least a portion of the receiving layer being placed in contact with at least a portion of the activating layer to initiate a predetermined time period. The migration of the one or more migratory activators into the receiving layer causes at least a portion of the one or more masking colorants to advance to a final colorless state resulting in a visual color change of the receiving layer that indicates the predetermined time period has elapsed. Also disclosed are methods for creating and using the inventive time validation indicator.

A timing device comprises a sensing material and/or a component which is sensitive to the presence of an environmental attribute. The environmental attribute drives and speeds up or slows the timing device as the concentration of the attribute increases or decreases, respectively. Alternatively, the timing device is activated upon sensing the presence of the environmental attribute and indicates a total passage of time from exposure/activation of the timing device. Particularly, sensing materials of varying types are able to be used to indicate exposure to a variety of substances. For example, in some embodiments, the timing device comprises a sensing material which is sensitive to the presence of ultraviolet radiation. Alternatively, the sensing material is sensitive to other variables such as x-ray radiation and nuclear radiation. In further embodiments, the sensing material is sensitive to biological or physical contamination.

A timing device comprises a sensing material and/or a component which is sensitive to the presence of an environmental attribute. The environmental attribute drives and speeds up or slows the timing device as the concentration of the attribute increases or decreases, respectively. Alternatively, the timing device is activated upon sensing the presence of the environmental attribute and indicates a total passage of time from exposure/activation of the timing device. Particularly, sensing materials of varying types are able to be used to indicate exposure to a variety of substances. For example, in some embodiments, the timing device comprises a sensing material which is sensitive to the presence of ultraviolet radiation. Alternatively, the sensing material is sensitive to other variables such as x-ray radiation and nuclear radiation. In further embodiments, the sensing material is sensitive to biological or physical contamination.

A baby bottle serving pair provides two 4-ounce baby bottles and a freshness indicator. The serving pair is comprised of two 4-ounce baby bottles, an upper bottle and a lower bottle, whose bottom surfaces may be secured to each other with screw threads. Each nipple provides a heat sensitive ring which begins to change color when exposed to the warmth of the baby's lips, and may be used as a timer to determine the freshness of the baby formula or breast milk in the bottle.

Embodiments are disclosed for estimating time outdoors and in daylight based on ambient light, motion, and location sensing. In some embodiments, a method comprises detecting daylight based on an ambient light measurement, an estimated sun elevation angle and at least one confidence threshold; determining a motion or activity state of a user based on motion sensor data; determining an indoor or outdoor class based on the motion sensor data and the ambient light detections; determining user exposure time to daylight between, before or after ambient light detections, based on the motion or activity state, and the determined indoor or outdoor class; and storing or displaying the daylight time.

Embodiments are disclosed for estimating time outdoors and in daylight based on ambient light, motion, and location sensing. In some embodiments, a method comprises detecting daylight based on an ambient light measurement, an estimated sun elevation angle and at least one confidence threshold; determining a motion or activity state of a user based on motion sensor data; determining an indoor or outdoor class based on the motion sensor data and the ambient light detections; determining user exposure time to daylight between, before or after ambient light detections, based on the motion or activity state, and the determined indoor or outdoor class; and storing or displaying the daylight time.

The invention relates to a timing system for measuring a runner's (2) running time between two presence points (3) of the runner's running path, comprising a measurement beam receiver (MSE (5)) and a measurement beam emitter (MSG (6)). The measurement beam (8) from these intersects said running path. When reception of the measurement beam is interrupted, presence signals are generated for the runner that are evaluated in the timer (8) in order to acquire and output the running time. In a running path with a turn-around between a start/finish line (SZL (10)) and a turn-around point (4.3), or a running path that is undulating to zig-zagged, the measurement beam receiver MSG (beam source 6.2, mirror 6.1) is situated at the ends of said running path. Presence signals are generated at the turn-around point (4.3) and/or at least one of the turning points (3) of said running path. In addition, the pairing of an additional measurement beam receiver [start/finish MSE (5.2)] and beam source (6.2), with a measurement beam perpendicularly intersecting the running path, can be arranged on the start/finish line (10) and is preferably integrated into a shared timer unit (9).

The invention relates to a time-measuring system for measuring the running time of a runner (2) comprising, for sensing the presence of the runner on a presence line (3, 4.3) crossing the running track, a signaling device (5), which has a light-beam source (6) and a light-beam receiver (7), ahead of the running track (4) and, in the light beam oriented parallel to the running track, a reflector (10). The reflector comprises a deflecting mirror (10.1) and an end mirror (10.2). Both are positioned on the presence line (3) on different sides of the running track (4) in the horizontal plane of the light beam of the light-beam source (6) (light-beam plane) and are oriented in the manner of a prism in two vertical planes in such a way that the light beam crosses the running track (3) between the two mirrors at a substantially right angle and is reflected to the light-beam receiver (7).