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Light gate have a beam that rubs from one LED/IR light source onto a detector. The beam is "Cut" whenever movement is detected.

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Would it be more reliable using manual stop watch or light gates?

Light gates are generally considered more reliable than manual stopwatches because they can provide precise and accurate timing measurements without the potential for human error or reaction time delay. Light gates are commonly used in scientific experiments and sports timing to ensure consistency and accuracy in timing measurements.


What are light gates?

light gates are simple optical circuits that have an opening between an emitter and receiver. If the path between the two is interrupted, a signal is sent to a computer or other data recorder. light gates are typically used for timing and detection.


What is a light gate?

Light gates are simple optical circuits that have an opening between an emitter and receiver. If the path between the two is interrupted, a signal is sent to a computer or other data recorder. Some gates work in continuous mode, meaning the signal is different when the light is blocked, for example high or low voltage. Others work in pulsed mode, which responds by giving a pulse whenever the 'state' of on or off changes. And a third kind send a signal continuously while the path is open, and simply stop the signal when the path is broken. These gates are typically used for timing and detection. Many automatic garage doors use a light gate to detect whether the door will come down on something (or someone!).


How can you make a traffic light using logic gates?

I was searching for the same thing and came accross this along with this page and I thought I'd answer: http://www.super-science-fair-projects.com/science-fair-projects-with-signal-lights.html I hope it is helpful.


The capacity to do work or produce light is?

The capacity to do work is energy. The capacity to produce light is luminosity.