![Crystals | Free Full-Text | LED as Transmitter and Receiver of Light: A Simple Tool to Demonstration Photoelectric Effect Crystals | Free Full-Text | LED as Transmitter and Receiver of Light: A Simple Tool to Demonstration Photoelectric Effect](https://www.mdpi.com/crystals/crystals-09-00531/article_deploy/html/images/crystals-09-00531-g012.png)
Crystals | Free Full-Text | LED as Transmitter and Receiver of Light: A Simple Tool to Demonstration Photoelectric Effect
![Diffused White 3mm LED (25 pack) : ID 778 : $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits Diffused White 3mm LED (25 pack) : ID 778 : $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/778-00.jpg)
Diffused White 3mm LED (25 pack) : ID 778 : $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits
![Aigostar LED Leuchtmittel GU10 8W Kaltweiß, Glühbirnen 640 Lumpe 6500K 230V Abstrahlwinkel 100-120 Grad, Lampe Strahler Flimmerfrei nicht Dimmbar Reflektorlampe 5er-Pack : Amazon.de: Beleuchtung Aigostar LED Leuchtmittel GU10 8W Kaltweiß, Glühbirnen 640 Lumpe 6500K 230V Abstrahlwinkel 100-120 Grad, Lampe Strahler Flimmerfrei nicht Dimmbar Reflektorlampe 5er-Pack : Amazon.de: Beleuchtung](https://m.media-amazon.com/images/I/61KHRGSOtAL._AC_UF1000,1000_QL80_.jpg)
Aigostar LED Leuchtmittel GU10 8W Kaltweiß, Glühbirnen 640 Lumpe 6500K 230V Abstrahlwinkel 100-120 Grad, Lampe Strahler Flimmerfrei nicht Dimmbar Reflektorlampe 5er-Pack : Amazon.de: Beleuchtung
![Crystals | Free Full-Text | LED as Transmitter and Receiver of Light: A Simple Tool to Demonstration Photoelectric Effect Crystals | Free Full-Text | LED as Transmitter and Receiver of Light: A Simple Tool to Demonstration Photoelectric Effect](https://pub.mdpi-res.com/crystals/crystals-09-00531/article_deploy/html/images/crystals-09-00531-g013.png?1572370937)