Hi:
This is a little off topic, but bears a strong relation to sundials.
After watching a TED talk on taging of tuna with sensors that determined
the Lat and Lon of the fish based on the length of a day and the time of
sunrise and sunset I found this method is called Light Based
Geolocation
can understand, but I'm surprised it works for fish. Perhaps tuna
never dive too deep.
Chris Lusby Taylor
- Original Message -
From: Brooke Clarke brooke95...@att.net
To: 'sundial' sund...@rrz.uni-koeln.de
Sent: Tuesday, October 12, 2010 5:54 PM
Subject: Light Based Geolocation
Hi
Hi Brooke,
Here's a description of a light based geolocation capable tag.
http://www.wildlifecomputers.com/Products.aspx?ID=20
Geolocation using light-level Wildlife Computers has developed software,
WC-GPE, that calculates daily longitude and latitude from recorded light
level curves
So I am marooned on a island with nothing but I might be able to
determine a few things that I could write on a message in a bottle
that would help my rescuers determine my exact location.
By careful sunrise observation I could determine the solstices.
Now I have a calendar.
I know dawn to
: Light Based Geolocation
So I am marooned on a island with nothing but I might be able to
determine a few things that I could write on a message in a bottle
that would help my rescuers determine my exact location.
By careful sunrise observation I could determine the solstices.
Now I have
Based Geolocation
So I am marooned on a island with nothing but I might be able to
determine a few things that I could write on a message in a bottle
that would help my rescuers determine my exact location.
By careful sunrise observation I could determine the solstices.
Now I have a calendar.
I
: Light Based Geolocation
The way I understand the geolocation device is that dawn rises at the
same time along different longitudes. If you know what time sunrise is
and how long the day is on a particular day you know your latitude as
well as your longitude.
On a deserted island, the time
. Sinnottrsinn...@post.harvard.edu; Sundial List
sund...@rrz.uni-koeln.de
Subject: Re: Light Based Geolocation
The way I understand the geolocation device is that dawn rises at the
same time along different longitudes. If you know what time sunrise is
and how long the day is on a particular
