Thanks to all who have sent in observations on the device my son alerted me
to and which I showed at
http://tinyurl.com/5gnqz6
I have been away for a week and only just got back. Apologies therefore
for this late acknowledgement to all who responded.
The device is, as several suggested,
be dark
simultaneously? I would expect the 180 degree scale to be divided into 12
hours, not 24.
Chris
- Original Message -
From: Patrick Powers [EMAIL PROTECTED]
To: Sundial List [EMAIL PROTECTED]
Sent: Tuesday, September 02, 2008 11:03 PM
Subject: Unknown solar device?
Can anyone
Hi Patrick,
This device obviously is a Wheatstone folding-type polarization
sundial. See Allan Mills' article The sellotape sundial in BSS
Bulletin 98.1, p. 3-9, especially figure 7.
Best regards,
FRans Maes
Patrick Powers wrote:
Can anyone throw light on the interesting device to be found
Here are an explanation of the unknown / Known sundial
http://www.montgomerycollege.edu/Departments/planet/planet/Polarization_sundial.ppt
G. Bellina
Frans W. Maes wrote:
Hi Patrick,
This device obviously is a Wheatstone folding-type polarization
sundial. See Allan Mills' article The
Can anyone throw light on the interesting device to be found at
http://tinyurl.com/5gnqz6
It appears to be a genuine scientific instrument made by Smith Beck 6
Coleman St. London
I am told that this company changed its name to Smith in about 1850.
Size = 145mm X 120
It folds in two places it
PROTECTED]
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Patrick Powers
Sent: Tuesday, September 02, 2008 3:04 PM
To: Sundial List
Subject: Unknown solar device?
Can anyone throw light on the interesting device to be found at
http://tinyurl.com/5gnqz6
