He lives on Long Island, New York. Reach out to him on LinkedIn. Heat pumps work like central air conditioning units but with a reversible cycle, so you can use them to heat and cool your home.

It uses a webcam to record an EMI probe and the overlay a heat map of the interference on the image itself. Regular readers will note that the hardware end of [Charles Grassin]’s EMI mapper ...

Statistics Netherlands (CBS) is studying new types of visualisations to present complex data at a glance. An example is the heat map, in which a value is represented by a progressively darker colour ...