Originally Posted by cdelong
it's obvious when water is boiling
it doesn't matter if it just started boiling or has been boiling for 30 minutes..... water boils at 212F. Don't knock it till you try it. It's amazingly accurate and a quick test recommended by Exergen before you send the gun in for repair. keep the gun within 1/2 of the surface of the water and you'll get good results.
How Is the Air Different at High Altitudes?
Above 2,500 feet, the atmosphere becomes much drier. The air has less oxygen and atmospheric pressure.
The reason is the lower atmosphere pressure due to a thinner blanket of air above. At sea level, the air presses on a square inch of surface with 14.7 pounds pressure; at 5,000 feet with 12.3 pounds pressure; and at 10,000 feet with only 10.2 pounds pressure — a decrease of about 1/2 pound per 1,000 feet.
Water and other liquids evaporate faster and boil at lower temperatures.
As atmospheric pressure decreases, water boils at lower temperatures. At sea level, water boils at 212 °F. With each 500-feet increase in elevation, the boiling point of water is lowered by just under 1 °F. At 7,500 feet, for example, water boils at about 198 °F.
Check your altitude to find your boiling temp.