10D10.30 - Air Pollution

Code Number:
Demo Title:
Air Pollution
Air Pollution
Area of Study:
Chemistry and Physics
Air Pollution Indicator.

Hold the card up while observing the sky.  Match as closely as possible one of the opacity windows with what you observe.  This will give you a rough indication as to the present level of pollution.  This will be particularly useful if traveling to Bejing, China.

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