The term "Renaissance Man" was born out of the trend back in the 14th-15th century for society to have a go at all sorts of interests: science, arts, literature, music, architecture, religion, history. This is a period renowned for the exquisite passion that was shown for all things equally, which is the reason why today we can enjoy the works of its major proponents: Michaelangelo, Da Vinci, Bramante, and the fascinating Italian and French projects.
Hence, by idiomatic definition, a "Renaissance Man" (or woman) is an individual who as a diversity of focal points which he or she wants to improve and excel.
Ben Franklin not only dwelved in the sciences with the creation of the house rods to detour lightning, the stove, bifocals, and the Poor Richard's almanac, but he was also a brilliant politician, a conversation maker, a charmer, an advocate, drawer, first class womanizer ;) and a historian of the first class.
Maybe you are, yourself, a Renaissance woman or man, if you have a tendency to diversify your interests and make them your own personal projects.