In 1870 the Washburn Langford Doane Expedition visited the spring, noting a geyser nearby (later named Excelsior).

In all systems, a small supplementary heater increases personal security and reduces lifestyle impacts for a small reduction of autonomy.

If I buy a hybrid car, install a solar panel at my home, or upgrade to a more efficient water heater, I get a tax credit.

Another, far less common, type of MEMS based accelerometer contains a small heater at the bottom of a very small dome, which heats the air inside the dome to cause it to rise.