A series of portraits of scientists I did in between freelance jobs in my first week after leaving my office. I have to admit I didn't really choose according to who has made the greatest contribution to science, I just went for three scientists who were fun to draw.
They are as follows:
Anna Fisher: astronaut and chemist, and the first mother in space.
Nikola Tesla: genius, inventor, electric wizard and owner of a very fine mustache.
Max Planck: father of quantum theory.