whatsthatnoise
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- May 27, 2012
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Thank you for taking a LOT of personal time to be thorough and detailed to prove the point. Its not falling on all deaf ears. I, for one, appreciate you taking the time to be helpful despite there still being objection to your logic and reason. I could not be as patient as you. Thank you sir. Well said.
I know that my view is not popular, but I wanted to make the case for physics, specifically regarding the "bike headlight." Just as everyone has the right to discuss why they believe they see a bike headlamp under the truck, I would like to explain why I believe that the physical laws of refraction and reflection combined to create a convincing optical illusion:
I still think that what many see as a "bike headlight" is actually the reflection of the truck's headlight off of the camera lens, onto the inner surface of the plexiglas dome over the camera, and reflecting back into the camera lens, thereby adding to the refraction originally occurring when it passed through the plexiglas dome.
A strong light source, pointed at a camera, encounters the refractive effect when it passes through a transparent medium. This means that the light rays are slightly shifted as they come out the other side of that medium, a plexiglas dome, for example. Light rays passing through a transparent material are always slightly diverted from their original trajectory. This same effect can be seen by placing a straw into a glass of water and viewing it from the side, or standing in a pool and seeing how one's legs are foreshortened.
With respect to the LCG camera, a strong light (the DWT's headlight) was indirectly shining at the camera. It's the strongest light source closest to the camera. The light rays traveled in a straight line from the headlight to the plexiglas dome. Once the rays hit the dome, and headed toward the lens, they were diverted slightly downward as they exited the inner surface of the dome, due to the refractory effect of transparent materials.
In the case of the plexiglas dome, some of the rays, instead of traveling through the camera lens onto the sensor, bounced off the curved surface of the camera lens, reversed direction but at a different, non-diametrically-opposed angle, due to the lens curvature, and reflected off of the inner surface of the plexiglas dome back into the camera lens. Therefore they shined on a different spot of the plexiglas dome than they had originally passed through.
Due to the curvature of the lens, the curvature of the plexiglas dome, the laws of reflection, and the original slight refraction caused by the plexiglas dome as the rays were coming in from the truck, the reflected rays bouncing off the camera lens and hitting the inside of the plexiglas dome are dimmer and lower than the original light source, the truck headlight. The reason that they create this refraction illusion directly under the truck headlight is that both the dome and the lens curve directly backward as one heads toward the bottom of it, changing the angle of the reflected light rays.
That reflected light off the lens then bounces off of the inside of the plexiglas dome, to be recorded by the camera as a dimmer version of the truck headlight - which masquerades as a bike headlight. Had the camera and dome been turned 90 degrees sideways on the City-Hall wall, the "bike headlight" would have appeared to the left or to the right of the truck headlight.
All this is just my opinion, based upon my knowledge of physics and the refractive and reflective properties of transparent materials, with regards to light rays. It is not to address anything else in the photo. But given the physical laws of refraction and reflection, it may be a fruitful exercise for folks to re-examine the picture, and intentionally ignore the "bike headlight," and see what that analysis reveals. :twocents: