Based on the limited video reference, a very basic air pollution detector can be made using a piece of card, string, and an applicator (finger or knife).
Here's a breakdown of the process:
- Prepare the Card: Cut a piece of card into a square.
- Create a Hole: Make a small hole in one corner of the square. This can be done with a finger or a knife (exercise caution if using a knife).
- Attach the String: Pull a piece of string through the hole in the corner of the square.
- Tie the String: Tie the string securely.
This creates a simple device that will collect particulate matter from the air. The amount of visible dust and dirt collected on the card over time can give a very rough indication of air quality in the area where it's hung. Important Note: This method provides a highly qualitative and subjective assessment. It does not provide quantitative data or identify specific pollutants. More sophisticated and reliable methods are needed for accurate air quality monitoring.
