Horizontal locomotor activity (the number of infrared beams crossed) and vertical locomotor activity (the number of infrared beams broken up to a height of 9 cm) were measured during six consecutive 30-min periods.
At the low level of energy needed for networking, researchers say, infrared beams cannot hurt the eyes or anything else.
To recognize that someone wants to get in, the car senses a hand touching a handle by using capacitors, infrared beams or microswitches.
We eagerly embrace high-tech solutions (dimmed lights, infrared beams, electronic doorstops) over low-tech solutions: for example, simply asking the doctor to lather up before the examination.
The Cyclops can be used only at the service line because, unlike the baselines or sidelines, there are no feet or rackets present to break the infrared beams.
Scans performed by light scanners, infrared beams, silicon sensors and other means are checked against a digital fingerprint stored in a database on a network or on the device itself.
Mr. Carlton, an inventor from Malta, developed a system called the Cyclops by Carlton, a service line monitor that uses infrared beams to determine whether a serve is in or out.
Fisher and the team arrived by helicopter to "groundtruth" the data revealed by surveying technology called Lidar, which projects a grid of infrared beams powerful enough to break through the dense forest canopy.
After shining infrared beams and spotlights on it, Chris, the captain, radioed a warning: "If you do not comply, we will be forced to sink your vessel," he said.
One of the Cyclops boxes transmits five infrared beams across the court to the other box, which is the receiver and is connected to a smaller control box held by the service line umpire.
Three infrared beams crisscross the room to intersect at a point on his skin just above the malignant tumor choking off his prostate.
