1. Aerosols measurements

2. Why? To know what the influence of aerosols are on: Your health The earth And to check, validate, the satellite from the NASA

3. Measurements You can only measure when there aren’t clouds Hold still for 30 seconds Measure throw a open window

4. What to do after and during the measurement? Need to write down: date time of measurement type of clouds the air-pressure the colour of the sky Remember the highest number

5. How does it works? LED’s are the detectors Light falls on one of the two LED’s Electricity goes to an voltmeter The voltmeter measure the voltage

6. Why red and green? Red light has a bigger wavelength Green light has a shorter wavelength than red Both of them are reflected by a different size of an aerosol

7. Thanks for listening! Are there any questions?