I loved Theo Gray's frozen mercury fish but, as he says, mercury is bad for you. If you want to play with a nontoxic metal that melts at low temperatures, you can buy little bottles of it at scitoys.com. Simon Field, the proprietor, sells two kinds.
In the photo above, I am holding two small vials of liquid metal. The vial on the right contains gallium, an element that melts at 29.76° Celsius (85.57° Fahrenheit). The vial on the left is an alloy that contains gallium, indium, and tin, and melts at -20° Celsius (-4° Fahrenheit).
You can do a lot of fun things with these. For instance, you can put a drop of gallium on a sheet of aluminum foil and it will combine with the aluminum, dissolving a hole in it.
Nontoxic metal alloy that is liquid at room temperature
IMGURian @KRANKARTA6 did an awesome topography visualization project in the “Ridgeline Style” that reminds us of the album cover for Joy Division’s classic LP ‘Unknown Pleasures.’
UPDATE: Launch scrubbed due to weather just a few minutes before launch. See you Saturday for another try! Today, a SpaceX Falcon 9 rocket and Crew Dragon capsule is scheduled to shuttle two NASA astronauts to the International Space Station. This will be the first time humans will launch to space from the United States […]
Richard Branson’s Virgin Orbit failed on its first rocket launch attempt, which took place out of the Mojave Spaceport in Southern California.
“It’s better to have it and not need it than to need it and not have it.” – “Lonesome Dove,” Larry McMurtry If the past few months have taught us anything, it’s that we need to be prepared now more than ever. Emergency situations can happen quickly and there’s no telling when you may need […]
Just as in almost any industry that seeks high-demand, well-trained workers, certification often becomes key. For project managers, that means anyone who’s serious about serving in that role with a respected company knows they’re going to need the seal of approval in one of the field’s most recognized methodologies before they stand much of a […]
Popping a new battery in a smoke detector or adding salt to your water softener are easy fixes. But if you run into trouble or a necessary repair in a cramped, tight place, sometimes with no obvious fix or easy access, it can be a pretty frustrating exercise. Since flying blind is the absolute worst, […]