When the light beam through the tube is blocked by an air bubble within ... the infrared beam. The air bubble sensor circuit is designed to render a logic-level digital output whenever the invisible ...

The buzzer at the output of the receiver is activated when the light beam is interrupted by a person passing through it. The transmitter and receiver circuits of the infrared ... Only in the rare case ...

and after one iteration he settled on a circuit which can provide the board power from a battery or a USB cable, while also managing the battery’s charge. As for sensors, it has a light sensor ...

BEAM robotics ... focuses on building robots with simple analog circuits. [NanoRobotGeek] built a great example of the form, creating a light-tracking robot that uses no batteries and no ...

Instead of sending out fixed pulses, FMCW lidars send out a continuous laser beam with a steadily changing frequency. When the light bounces back, the sensor optically combines the inbound and ...

However, classical physics also has an analogue to quantum mechanical entanglement: “In a radially polarized light ... beam at a greater distance from the centre. The researchers in Erlangen used ...