This weekend we are looking for a physicist, born in Poland or Germany depending on your point in time. And to make things more complicated, he spend most of his life in the Netherlands. Despite having an angelic first name, his first invention in 1709 was a compilation of heat and alcohol. He adapted it 5 years later and used mercury instead of alcohol, differently toxic but probably less religiously offensive.
Any ideas? Measure your wisdom in the comment section with a HINT. If your brain is frozen, wait a bit...other hints might come in and warm things up for you...let the games begin!