- Joined
- Mar 8, 2013
- Messages
- 7
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So I was laying in bed the other night looking at the street light through the window. Upon squinting at this light, I began to notice rays. Further studying this phenomena, I noticed that every ray travels directly to my eye.
This was really cool. I coud bring my index finger up near the bottom my eye, & a light ray would attach to it! I could slowly move my index finger around & the light ray would follow the tip of my finger. Neat
Something to make note of: Look forward closing one eye. With the eye open, how far up, down, to the sides, etc can you see WITHOUT moving your head? I don't have the technical term for this, but let's call it the "edge of sight" ...or "edges" as it's somewhat of a circle. Damn nose gets in the way lol.
Okay, so when I was studying these "rays of light," I noticed that they came in contact with my "edge of sight."
Makes sense. So assume this,
A cylinder. The top of the cylinder is the moon. The bottom of the cylinder is your "edge of sight" ...with the center point being the center of your eye. Now the light rays you could call the sides of the cylinder.
To me, it'd seem only logical that I would only be able to see within the cylinder. ...but that's not how light works. I noticed this upon looking outside. I could see other things illuminated, even outside these "rays" of light. Why is this? Other light sources?
Sounds right. I just want to know how to mathmetical work this out. Light rays can travel in lines all they want, but how do they illuminate? It seems to me that regardless of the geometry of light rays, illumination doesn't follow ...as in I can see illuminated objects outside the light rays I see from a single source.
This was really cool. I coud bring my index finger up near the bottom my eye, & a light ray would attach to it! I could slowly move my index finger around & the light ray would follow the tip of my finger. Neat
Something to make note of: Look forward closing one eye. With the eye open, how far up, down, to the sides, etc can you see WITHOUT moving your head? I don't have the technical term for this, but let's call it the "edge of sight" ...or "edges" as it's somewhat of a circle. Damn nose gets in the way lol.
Okay, so when I was studying these "rays of light," I noticed that they came in contact with my "edge of sight."
Makes sense. So assume this,
A cylinder. The top of the cylinder is the moon. The bottom of the cylinder is your "edge of sight" ...with the center point being the center of your eye. Now the light rays you could call the sides of the cylinder.
To me, it'd seem only logical that I would only be able to see within the cylinder. ...but that's not how light works. I noticed this upon looking outside. I could see other things illuminated, even outside these "rays" of light. Why is this? Other light sources?
Sounds right. I just want to know how to mathmetical work this out. Light rays can travel in lines all they want, but how do they illuminate? It seems to me that regardless of the geometry of light rays, illumination doesn't follow ...as in I can see illuminated objects outside the light rays I see from a single source.