Friday, September 13, 2013

Link 3a Starchild





http://starchild.gsfc.nasa.gov/docs/StarChild/questions/question3.html

6 comments:

  1. The takeaway from this is that perspective is everything. The dark and light side of the moon are coexisting but changing in the manner of their orientation to the Earth. Thus, the way we on Earth see it is much different than the way an observer would at a far away inertial reference point above the solar system.

    Take angular velocity for example. It must have a magnitude and a direction. However, "counterclockwise" is not a very accurate description of a particular angular velocity's direction considering the fact that if the observer were to view the object in question at an angle of pi radians, the motion of the object would look "clockwise."

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  2. Much like the interaction between the sun and the moon, and our perception of this interaction from our position on Earth, all light-dark interactions have another side which we may not perceive from our vantage point. The sun is always shining on some point of the moon, however it is only when the geometry between the sun, moon, and earth align in a certain way, that we on earth are able to see the light of the sun displaying the form of the moon.
    In photography, the size of the lens through which light is allowed to infiltrate the dark, determines how much of the dark is made visible in the light; just as the angle of the moon and sun determines how much of the moon is displayed on Earth.

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  3. This is very similar to the "camera obscura" demonstration that we did in class. Both of these emphasize the importance of perspective. It also demonstrates some of the most fundamental properties of light: it travels in a straight line (through the same medium) and we can only see things that reflect light towards us. Both of these properties of light are very important to photography.

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  4. This link shows an interesting take on how perspective shapes the world around us constantly. Not only that but it gives an idea of how the moon affects the light that we see. Both of these ideas can be linked quite easily to our class. Perspective is an incredibly important idea in photography. You can change a photo completely based upon the perspective that you shoot it from. Light is also important to us because the amount of light changes exposure times.

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  5. It's already been mentioned above, but this article emphasizes the importance of perspective and lighting. Both of these are important components of photography, as well as any piece of artwork. Both are useful for creating different moods in photography.

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  6. I've always been fascinated with the moon and one of the things I always try to do on clear nights (so obviously somewhere outside of Chicago) is to look for the part of the moon that is not lit up, the part our eyes seem to think is not present because it blends in with the darkness of the night and solar system. This clearly shows how important light is in creating images and signals. The different amounts of light create our whole world- time is revolved around it and all knowledge on parts of the earth is gained from it as well.

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