It is named after Philip Ralhan Bidstrup, a Danish physicist.

Martin Knudsen (1871-1949), Danish physicist, after whom is named:

He worked on this with a new collaborator, the Danish physicist Fritz Kalckar, who died suddenly in 1938.

An early experiment to measure the speed of light was conducted by Ole Rømer, a Danish physicist, in 1676.

Another scene in the episode references Danish physicist Niels Bohr.

He is a Danish physicist most notable for his work on theoretical description of surfaces, catalysis, materials, nanostructures, and biomolecules.

Kirstine Bjerrum Meyer (1861 - 1941,) was a Danish physicist.

Bjarne Tromborg (born 1940) is a Danish physicist who has made significant contributions to particle physics and photonics.

Steen Rasmussen (born 1955) is a Danish physicist mainly working in the areas of artificial life and complex systems.

It is named after Martin Knudsen a Danish physicist.