Canadian teenager invents flashlight powered by heat of human hand

The video tutorial explains the use of the thermoelectric effect to generate voltage. It describes embedding tiles in an aluminum tube, where the hand provides heat and airflow through the tube offers cooling. The design is completed with a PVC tube for insulation and a low-power LED light.

What is the primary function of the thermoelectric effect in this design?

• To enhance airflow

• To provide insulation

• To create voltage

• To generate heat

What material is used to embed the tiles in the design?

• Steel

• Aluminum

• Copper

• Plastic

How does the design achieve a cooling effect?

• With a cooling gel

• Through airflow in the tube

• By using a fan

• By adding ice

What is the purpose of the PVC tube in the design?

• To enhance light output

• To provide extra insulation

• To increase weight

• To generate electricity

Which component completes the design by providing light?

• A high-power LED light

• A fluorescent bulb

• A low-power LED light

• A halogen lamp