[TowerTalk] polyrod

[Roger K8RI on Tower]

Just as a point of interest on color and heat.



In a glass covered solar heater using Forest Green as the color on the 
heating element, if the water flow stops, I believe the resting temperature 
of the element will be around 340 to 380 F.



I've seen bare aluminum plate 4' X 8' X 1" think (that's heavy!) that had 
been left laying on the pavement in front of the shop where I used to work 
get so hot that a cup of water thrown on it would hiss as it turned into 
steam.  It was like throwing water onto a hot frying pan.



Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
www.rogerhalstead.com