Fork light barrier
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Product Code : SCL-PLE-10386
The Fork Light Barrier from Lab Glassware Manufacturer is a physics laboratory optical timing sensor used to detect when an object interrupts a light beam during motion, velocity, acceleration, pendulum and trolley experiments.
Quick answer: A fork light barrier is an optical timing gate that detects when a moving object (trolley, pendulum bob, falling mass) passes through its fork-shaped slot, generating precise start/stop timing signals for motion and dynamics experiments.
| Specification | Detail |
|---|---|
| Product Name | Fork Light Barrier |
| Sensor Format | Fork-style optical light barrier |
| Brand / Supplier | Lab Glassware Manufacturer |
| Category | Physics Lab Equipment – Motion and Timing Apparatus / Optical Sensor |
How Does a Fork Light Barrier Work?
An infrared or visible light beam runs across the gap of the fork. When an object such as a trolley flag, pendulum bob, or falling card breaks the beam, the sensor sends a timing signal to a connected counter/timer or data-logging interface, allowing precise measurement of velocity and acceleration in motion experiments.
Frequently Asked Questions
Q: What is a fork light barrier used for?
A: It detects the moment an object interrupts its light beam, generating precise timing signals for motion, velocity, acceleration, and pendulum experiments.
Q: What equipment does it connect to?
A: It is typically wired to a digital timer/counter or data-logging interface; confirm the connector/output type needed for your existing timer before ordering.
Q: Can it be used with a dynamics trolley?
A: Yes, it is commonly mounted along a roadway/track to time a trolley or smart cart as it passes through the beam.
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Last updated: September 2026
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