File:Jurvetson - Navigation (by).jpg
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Summary
[edit]DescriptionJurvetson - Navigation (by).jpg |
I have to wander off for a couple days to Denver and NY for some nanobusiness. The moon reminds me of navigation... and one of my favorite stories, probably apocryphal, about the scientists who were interested in the question of why the moth spirals into the candle flame. Part 1 THE MIND: The neurologists mapped the entire visual pathway. Navigating by the moon, the flapping wings would occlude the light hitting the eye with each flap. Based on differential flashes driven by the cadence of the wings and angle relative to the light source, the moth would involuntarily turn toward the light to balance the input to each eye. Moths evolved without flames or light bulbs to confuse them (The moon is far away and served as a fixed beacon at night; the candle flame was bright but nearby - creating a death spiral). For some reason, they studied female moths. Part 2 UNIVERSAL TRUTHS: They thought they had the answer in studying the female moths. Every moth had the same pathway. Then someone looked at a male moth, and the eye-wing linkage was missing. That visual pathway was missing altogether. All moths exhibit the same behavior, so the neurologists looked for a similar pattern to explain the phenomenon. And then it hit them. The male moths had a simpler involuntary algorithm: follow the female moth. |
Date | |
Source | Navigation |
Author | Steve Jurvetson from Menlo Park, USA |
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This image, originally posted to Flickr, was reviewed on January 7, 2008 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:41, 7 January 2008 | 2,334 × 2,334 (1.04 MB) | File Upload Bot (Magnus Manske) (talk | contribs) | {{Information |Description= I have to wander off for a couple days to Denver and NY for some [http://www.flickr.com/photos/jurvetson/148783944/ nanobusiness]. The moon reminds me of navigation... and one of my favorite stories, probably apocryphal, abou |
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Camera manufacturer | Canon |
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Camera model | Canon EOS 5D |
Exposure time | 1/320 sec (0.003125) |
F-number | f/0 |
ISO speed rating | 1,600 |
Date and time of data generation | 21:08, 5 May 2006 |
Lens focal length | 0 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | QuickTime 7.0.4 |
File change date and time | 18:19, 15 May 2006 |
Y and C positioning | Co-sited |
Exposure Program | Manual |
Exif version | 2.2 |
Date and time of digitizing | 21:08, 5 May 2006 |
APEX shutter speed | 8.375 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Focal plane X resolution | 3,086.925795053 |
Focal plane Y resolution | 3,091.2951167728 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Scene capture type | Standard |