Shane+H

Shane H. 2011-2012
 * The Study of Seeing if Sunscreen Affects How the Radiometer Spins **

The purpose of this experiment was to find out if applying more and more sunscreen to a radiometer affects how long it spins. A radiometer has four vanes suspended in a glass bulb, and when light is shined on it, the four vanes spin around. The more light that is added, the more it spins; but, it was found out that the more sunscreen that is applied, the less it spins. A possibility of why it spins less when sunscreen is added is the organic and nonorganic ingredients in the sun screen are absorbing the flashlight light; just like they do to the real sun.
 * ABSTRACT **

It was found out that any amount of sunscreen, and any number of SPF makes the radiometer spin less; although bigger amounts of sunscreen and SPFs makes it spin the least. These results are important because they show that the more sunscreen applied, the more protection from the sun there is. (That can help with sunburns.) It was predicted that 5 mL of sunscreen will make the radiometer spin the least. This is correct, because 5 mL made it spin for 14 sec., which is the lowest amount of spinning time. To follow up this experiment, a sheet of paper could be placed in front of the flashlight. This could make some "clouds" and it could be found out if it’s better to go outside when there is a lot of clouds, rather than not a lot of clouds.
 * CONCLUSION **

Click to see the whole paper.


 * [[file:Shane H.2012.pdf|Shane H.2012.pdf]] **