President Obama reacts as Joey Hudy of Phoenix, Ariz. launches a marshmallow from his Extreme Marshmallow Cannon in the State Dining Room of the White House. (Kevin LaMarque/Reuters)

Young Joey Hudy wowed President Obama with his Extreme Marshmallow Cannon earlier this week, launching both sugary treats and what may become a promising career in science. And if he does, he should consider submitting this photo to a Tumblr aimed at combating the pasty nerd-in-a-lab-coat stereotype of scientists: This is What a Scientist Looks Like.

In the vein of occupation/eye-candy Tumblrs that came before it (I Work for the Internet, We Are Journalists), This is What a Scientist Looks Like invites everyone in the career field to submit photos and share stories about how they are so much more than test tubes.

No one on the site looks like Dr. Bunsen Honeydew, and there are plenty of women in what’s usually considered to be a male-dominated field. Hannah Hathaway, a Georgetown pharmacology Ph.D student is one of them — she spends her days studying the relationship between drugs and the body, and also blogging about fashion.

Via (Hannah Hathaway)

Her shirt, which contains a ring of ferrous iron (Fe2+), is a visual pun: a “Ferrous Wheel.”See Hannah, and other scientists — who skateboard, have tattoos, and bake cakes — at This is What a Scientist Looks Like.