Infographics redefined. A multimedia edition of Al Gore's book on climate change. I designed the interactive infographics.

BOULDER, Colo. — Mad-scientist kind of moments happen fairly often for nanoengineer Carson Bruns. A few months ago in his lab at the University of Colorado-Boulder, he tested his latest invention on his own arm and asked a colleague for help. These inks are best for younger children since most of the chemicals are household and generally less hazardous. They can be developed by heat generally ironing them with a hot iron or placing them in an oven or (on a white tile) on a hotplate. Equipment: In most cases, the substance changes colour when mixed with an acid or base because the pH changes and the liquid acts like an indicator and changes colour.

Yearnings

Invisible ink is any substance that you can use to write a message that is invisible until the ink is revealed. Anyone can write an invisible message, assuming you have paper, because body fluids can be used as invisible ink. Scientifically, that is still way far off. If tattoo ink were to make the leap from cosmetics into the medical realm, it would require clearing all sorts of regulatory hoops. Looking further afield, some companies are already investing in technology embedded in the skin. A European company called DSruptive makes injectable thermometers. It said about 5,000 people — living primarily in Sweden, Japan, the U.S., and the United Kingdom — have had the devices installed. Ali Yetisen, an engineer at Imperial College London, said for companies eyeing tech embedded in the skin, diabetes is a big focus. Potassium ferricyanide & phenolphthalein should not be used where there are naked flames (do not use Bunsen burners). The name Bang Bang might not ring a bell, but the tattoos he’s done are very public: They’re cascading down Rihanna, scattered across Miley Cyrus, and peering out from LeBron James, among others. Turns out, Bang Bang loves tech.

With the card, very carefully scrape the sooty substance off of the spoon and into the bowl. Do this slowly and deep into the bowl as it has a tendency to flutter away. To be honest with you, I don’t think either the FDA or the tattoo ink industry really knows what that’s going to look like,” said John Swierk, a chemist at the State University of New York-Binghamton. But, he said, the law does mean “the FDA has a new charge to really ensure that labeling is correct and good manufacturing practices are being followed.” Why do we model the world using abstractions invented for pencil and paper? Can we solve quantitative problems Bruns started a company, Hyprskn, a few years ago, when Bang Bang came across his work and suggested they team up. thymolphthalein HIGHLY FLAMMABLE & HARMFUL, developed by sodium carbonate (Solid is IRRITANT – solution is LOW HAZARD) (or another base)

How to make black ink, known as lampblack ink

Good results can be obtained from the heat method on milk, sodium hydrogen carbonate solution, vinegar (ethanoic acid), sugar solution and soapy water (sodium carbonate solution). A lot of patients who have to get radiation therapy get these small dots or crosses the first time they visit the radiologist to align the beam for therapy," Bruns said. “Most of these patients find these permanent tattoos they received from the radiologist to be permanent reminders of trauma, and they don't really want them.” M lead (II) nitrate, developed by 1 M sodium iodide (Lead (II) nitrate is TOXIC at = > 0.01M and HARMFUL in solutions less than this.) While Bruns’ inventions sense external factors like light and radiation, for manufacturers looking to develop in-body tech that reacts to the blood, there are other scientific hurdles. The immune system forms little shells around foreign bodies, effectively putting up a wall between a sensor and the blood. Paint brushes used for painting models would be ideal. Alternatively, wooden splints could be used.

presenting reasoned explanations, including explaining data in relation to predictions and hypotheses;

Swierk said many of the tattoo pigments in use now have been around a long time, which gives some users a base comfort level about their safety. But a new material comes with new unknowns. Taken at an entertainment level there is plenty to interest an audience and there is wide variety of chemical reactions taking place. This demonstration would be a good introduction or finale to a general lecture demonstration on chemistry, or for an open day presentation. Reset the scales again, then place the 5 and 2 Cups on the right of the scales and the 7 Cup on the left and fill it with the Pink Jar. These are best used with secondary students and most could be used comfortably with lower secondary students. Many of them work as pH indicators, so paint or spray a suspected message with a base (eg sodium carbonate solution) or an acid (e.g. lemon juice). Some of these inks will also reveal their message when heated (e.g. vinegar). The substances in milk weaken the paper and may be more susceptible to heat than the paper, so although the message dries clear, the paper weakens and darkens where the milk was applied. Equipment:

If somebody is going to get tattooed with Magic Ink, they have to accept a degree of uncertainty about what the future is going to hold with that ink,” Swierk said. It is 410BCE and the Ionian (or Decelean) war, between Athens and Sparta has been raging for four years. You have been tasked by King Agis of Sparta to develop a way of delivering secret messages to his armies, which would be unreadable if they fell into the enemies’ hands. You wonder if there is a way of writing with an ink that is only visible under certain conditions. Like all good science-artists, you decide to investigate further…M copper sulfate, developed by 1 M sodium iodide, 0.1 M sodium carbonate, or 1 M ammonium hydroxide