![Sensors | Free Full-Text | Low-Cost Laser-Acoustic PVC Identification System Based on a Simple Neural Network Sensors | Free Full-Text | Low-Cost Laser-Acoustic PVC Identification System Based on a Simple Neural Network](https://www.mdpi.com/sensors/sensors-22-08035/article_deploy/html/images/sensors-22-08035-g001.png)
Sensors | Free Full-Text | Low-Cost Laser-Acoustic PVC Identification System Based on a Simple Neural Network
![Lasers, explained by RP Photonics Encyclopedia; principle of operation, properties of laser light, applications, resonator, laser beam, stimulated emission Lasers, explained by RP Photonics Encyclopedia; principle of operation, properties of laser light, applications, resonator, laser beam, stimulated emission](https://www.rp-photonics.com/img/laser.png)
Lasers, explained by RP Photonics Encyclopedia; principle of operation, properties of laser light, applications, resonator, laser beam, stimulated emission
![Sensors | Free Full-Text | Simple Modification of a Commercial Laser Triangulation Sensor for Distance Measurement of Slot and Bore Side Surfaces Sensors | Free Full-Text | Simple Modification of a Commercial Laser Triangulation Sensor for Distance Measurement of Slot and Bore Side Surfaces](https://www.mdpi.com/sensors/sensors-21-06911/article_deploy/html/images/sensors-21-06911-g001.png)