I started drawing in college while pursuing my doctorate in theoretical nuclear physics. My work is a collection of very detailed black & white pen & ink drawings all made using a .25mm Rapidograph. Everything I do is inked entirely by hand, utilizing a wide variety of themes ranging from naturalistic to mechanistic to space/science fiction.
Often, I incorporate doodles (words, symbols, equations, and anything else I can think of) into my drawings to add depth, texture, and to engage the viewer. I also incorporate equations from my PhD dissertation, well, just because.
The idea is to keep you looking and always finding something new.