Radiant temperature

One of the concepts that Simon Hare, pictured here, is trying with the Pratt House project is to build with interior climate in mind. For example, the temperature indoors may be well over 70 degrees, but because this house has a concrete floor, that "thermal mass" absorbs radiant heat and makes it feel cooler.

Here Hare shows off an experiment in measuring the radiant temperature which is basically a ping pong ball painted gray connected to a temperature and humidity sensor. It was meant to approximate how the indoor conditions feel on a person's skin but it wasn't as accurate as hoped.