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Mike writes, "I know that I'm supposed to provide some sort of explanation, but I feel like everyone can probably tell that this is DNA. Every once in awhile someone will ask what's on my arm, in which case I respond that it's a futuristic staircase. Then they stare quizzically and I laugh."
Milad writes, "I am a Mechanical Engineering undergrad at UC Berkeley and I got this tattoo about a month ago. It's the golden ratio in the shape of a rectangle, with the ratio of the sides of the rectangle actually being the golden ratio! I have been obsessed with this number since I heard about it in high school, and it is the reason why I became so fascinated with mathematics. The golden ratio is known to be the closest mathematical explanation of beauty. It has been used a lot in architecture, art, and music around the world, and has some amazing mathematical and geometrical properties."
Carl: Like DNA and atoms, the golden ratio is a favorite at the emporium. See these geometrical version.
Russ writes:
Podarcis sicula (Italian wall lizard) is native to Italy, and the nearby Mediterranean coast. It thrives in cities, and has probably been
a human urban commensal for 2000 years. They and their congeners (P. muralis) have been
introduced into many places in Europe, including France, southern England, and Germany. they may be the most widely introduced temperate reptile species.There are at least four extant populations of Podarcis sicula and muralis introduced to North America: Long Island (NY), Topeka (KS), Cincinnati (OH), and Vancouver Island, British Columbia. there was a population in Philadelphia but they are apparently now extinct, and I recently heard of what sounds like a separate introduction in central NJ. All releases are associated with the pet trade and are decades old. Podarcis is here to stay, lacertid lizards finally made it over the pond.
I'm interested in them because I'm interested in invasive species and what they can tell us about natural invasions. I've looked at the parasite loads of all four extant pops, and they are quite depauperate compared to what would be expected. I've done really detailed work on the demography and the food habits of the LI pop, and next year I'm going to Italy to document the same things in the native habitat. I'm
expecting to see evolutionary changes as they adapt to the new environments.I mostly study turtles; this is my first real foray into lizard work. However, I couldn't see how my favorite turtles would transfer into a nice tattoo, not quite colorful enough.
Zach writes: "It is a half sleeve up my upper right arm based around an image taken by one of the CERN bubble chambers. It is based on this image. I first saw that image my freshman year of college. It had the sublime, simple beauty that only something made of math and science can have. It stuck with me for 8 more years before I actually decided to get it etched into me. Oddly enough, on Valentine's Day. I guess it was my Valentine's to physics and science. Oh, and when people ask who drew it, I always respond 'God.'"
Rachel writes, "I recently got this tattoo as a graduation present to myself. I just graduated from Florida Tech with my BS in marine biology. I'll be moving to New Zealand in July to study giant squid with my childhood hero, Dr. Steve O'Shea."
Carl: That's like a physicist saying she's going to work with Einstein. Have fun. [O'Shea on Wikipedia]
I am a soil scientist and entomologist. My favorite insects/arthropods are praying mantises, psuedoscorpions and spiders. I am also a big time feminist. I find praying mantises to be so fascinating, and while they are extremely adept killing machines, they are also one of the oldest insects around! This tattoo is a metaphor for my independance and tribute to my mantis friends.
From Wikipedia: Sexual cannibalism is common among mantids in captivity, and under some circumstances may also be observed in the field. The female may start feeding by biting off the male's head (as with any prey), and if mating had begun, the male's movements may become even more vigorous in its delivery of sperm. Early researchers thought that because copulatory movement is controlled by ganglion in the abdomen, not the head, removal of the male's head was a reproductive strategy by females to enhance fertilisation while obtaining sustenance. Later, this bizarre behaviour appeared to be an artifact of intrusive laboratory observation. Whether the behaviour in the field is natural, or also the result of distractions caused by the human observer, remains controversial. Mantises are highly visual creatures, and notice any disturbance occurring in the laboratory or field such as bright lights or moving scientists. Research by Liske and Davis (1987) and others found (e.g. using video recorders in vacant rooms) that Chinese mantises that had been fed ad libitum (so were not starving) actually displayed elaborate courtship behavior when left undisturbed. The male engages the female in courtship dance, to change her interest from feeding to mating. Courtship display has also been observed in other species, but it does not hold for all mantises.So in fact, the common assumption that all females cannabilize their mates either during/after copulation is debated because most observations of this were in a lab, where the mantis was likely highly aware of her captors. I have a magnet on my fridge with a woman in a wedding dress that says..."Marriage? No...I don't mate well in captivity!"
Carl: For more on mantises and their hungry love, see my article in the New York Times.
Renate writes, "As a geologist and in respect to my temperament, I though a volcano tattoo would be just adequate. I got it at a time when tattoos were not as fashionable as they are now. Someone said to me 'Oh, with such a tattoo you will never get a permanent position.' But I have a permanent position now, despite the tattoo (actually the second one)."
Julia writes, "I got this tattoo done on Saturday. It's the same set of footprints I use in the avatar for my blog (The Ethical Palaeontologist), but in fact they're the narrow-gauge sauropod dinosaur trackways from the Ardley quarry in Oxfordshire. There's no deeper meaning other than the fact that I've spent most of my academic career working on sauropod dinosaurs. But there are plans for more, if I could just get hold of a decent black and white illustration of a sauropod dorsal vertebra in dorsal view..."
Carl: Here's a paper Julia co-wrote on what the trackways reveal about dinosaurs. [Update: Whoops, wrong Julia. Thanks for the correction, Julia...]
Rachel writes: "I studied geology for three years before I reached my major’s capstone course in paleontology. Therein, I became much more familiar with the subject that has since become my greatest scientific passion: evolution. Darwin’s breathtaking brilliance left me awe struck and I have since devoted much of my free time to studying natural selection, specifically, the origins of Darwin’s ideas. One of the basic foundations for Darwin’s discovery was the adaptation of different types of finches to various islands in the Galapagos. To commemorate my devotion, as well as to honor his genius, I got this tattoo of his first published drawing of said finches."
Carl: If you haven't read The Beak of the Finch, do so now.
Kate writes, "I thought I'd send you a photo of my tattoo. I guess it fits into the 'anthropology' category although I'm actually a vet (I've seen exactly one deer in a professional capacity since I graduated). It's a copy of a tattoo found on the Pazyryk mummy, a 2,400 year old Scythian, possibly a shaman. I've heard that it's the oldest known tattoo found on a woman, but I'm not sure whether that's correct. It was done to celebrate the end of a 1, 200 mile walk from John O Groats to Land's End back in 2002. I've heard of other people with it, but haven't seen any, so I'd be interested to find out if any of your other readers have the same one. Not as cool as some, but I like it!"
Ben, a philosopher of science grad student, writes: "Darwin sketched the great tree of life and as a philosopher of science and I endeavor to help to complete his project. 'Metaphysics must flourish, he who understands baboon would do more for metaphysics than Locke'- I believe that by analyzing the universe underneath the lens of evolution we can come to complete Darwin's project. Darwin, more so than any other great thinker, has provided humanity with an explanation for its existence."
Mark writes, "This tattoo is the Zermelo-Fraenkel with Choice axioms of set theory. These nine axioms are the basis for ZFC set theory, which is the most commonly studied form of set theory and the most well known set of axioms as well. From these nine axioms, one can derive all of mathematics. These provide the foundation of mathematics, a field that you can likely tell that I love dearly."
Carl: Mark is making an encore appearance at the Emporium. See his Y combinator here...
Ryan writes, "I am a big astronomy buff and this is a depiction of an eclipse with the Eagle Nebula and one of the angelic spires within it."
Carl: Check out this site at NASA for more pictures and some background about these staggering towers of light.
JC writes, "The broken triangle is an illustration of the Gestalt law of closure. The law of closure demonstrates how the mind creates wholes out of parts - and a world out of sensory information - by "filling in the gaps." Although I'm no longer a professional social scientist, the law is a useful one in the realm of public policy where I'm currently employed. Personally, I use it as a reminder to stay humble, because you never know how much of the world you're making up as you go along."
Orla writes, "I'm a Zoology undergrad in Dublin, Ireland. I got this tattoo of an orangutan to ensure that, even if they die out in the wild, which seems to be quite likely, they'll still be remembered. The noblest of the apes sits on my lap forever."
Drew, an oceanography graduate student, writes: "This, on my leg, is the incompressible form of the conservation of mass equation in a fluid, also known as the continuity equation. When people ask what it means, I say it defines flow. Sometimes I say it means you should have studied more physics, but that is only when I am feeling like being funny. What it means in more detail is that, for an incompressible fluid, the partial derivative of the velocity of the fluid in the three spatial dimensions must sum to zero. It therefore concisely states the fundamental nature of a fluid.
"My advisor took this picture, and I swear he is obsessed (in a good way) with this tattoo. He is giving a talk at Woods Hole next week as he is the recipient of an award, and he is planning to show off 'how quantitative scripps students are' which i think is hilarious and only slightly mortifying. Speaking of mortifying, it is slightly mortifying to be sending this email at all--I have to admit I am a little embarrassed. It is definitely the most vain thing i have done today. I do have an ulterior motive which I have no problem admitting: I want to stake a claim on this particular piece. I guess it might be a little lame to want to claim ownership over something so silly but there it is and I guess at least I can admit it."
"My name is Sharon and I'm an undergraduate math student at Arcadia University. A while ago, I decided that I wanted a tattoo that showed my love for mathematical formulas and equations. I got the quadratic formula on the back of my neck. The quadratic formula has been my favorite equation ever since I learned to sing it to the tune of "pop! goes the weasel." My tattoo is also useful for anyone who happens to sit behind me on an exam!"
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