Dobson,+Anthony

Video. 9/19/11. Something I learned: Hydrocarbons are in all substances that can be boiled. They all burn at different times.

Something I found interesting: The Hydrocarbons with higher boiling points are boiled off in lower sections.

Something I think is relevant to our class: I think that separating the chemicals in the different substances we have done in this class is relevant to the video.

Anthony, Hydrocarbons are not in everything that can be boiled. Water is not a hydrocarbon. 4 stars. MW

Tattoo Ink. 3 Things you learned: One thing I have learned is that tattoos are made of water, witch hazel: alcohols, varying from Listerine to vodka to ethanol. The ingredients to make tattoos are also used in making cosmetics. Some of the ingredients used are made of different types of basses, either synthetic or organic.

3 Things I knew: Tattoos were invented more than 5,000 years ago when the mayans and aztecs were starting up. The only way to remove tattoos is through a lazer operation. Not all tattoos are permanent, some come with a special bases that doesn't go into the skin and fades after a few days.

Anthony, Looks good! It might be nice to be able to easily remove a tattoo if you wanted to. 5 stars! MW

10/4/11 3 Things I Learned: There is an electric current that runs through the light of the eyes. Sensors for garage doors or motion detectors are very sensitive to anything that crosses. That the sensors are mainly IR which is infrared light that we can't see.

3 Things I Knew: I knew that there is an eye that no human can see because it is such high light. I knew that a photo sensor is something that detects light. Light runs in waves so that the human eye and sensors can see iPr

Anthony, Some of your sentences make no sense! What's this eye that no one can see? What is iPr? 3 stars. MW