WARSAW, Poland (AP) — Scientists in Poland have created a computer portrait of 18th century physicist Daniel Gabriel Fahrenheit using images of his relatives.

Jerzy Proficz from the Gdansk University of Technology said Tuesday a team of three scientists built a computer application to create the most probable likeness of historical figures.

Using historical data, descriptions of the features and images of relatives, they created the portrait of Fahrenheit, of whom no reliable likenesses exist.

Fahrenheit was born in Gdansk in 1686 and died in The Hague in 1736. He invented the mercury thermometer and a temperature scale now named after him that is still in use in the United States, Britain and Canada.