Our carbon buoy gets a makeover: 


Since the Exploratorium opened at its waterfront location more than a year ago, we’ve been engaged in a unique experiment with the National Oceanic and Atmospheric Administration. NOAA’s  Pacific Marine Environmental Lab in Seattle lent us a beautiful ocean buoy, outfitted with instruments to measure carbon in the ocean and atmosphere. For the last 15 months, it’s been bobbing in all its white and red glory in the lagoon between Piers 15 and 17, occasionally surrounded by mist from the fog bridge art piece.

We’ve reached a milestone with the experiment, the first time we’ve pulled the buoy out of the water for maintenance. It’s a complex choreography of forklift, mobile crane and a balky metal watercraft dubbed “the angry bathtub” to lift the one ton buoy from the water onto our outdoor plaza. Read more.



'Quantum Cheshire Cat' becomes reality
Scientists have for the first time separated a particle from one of its physical properties - creating a “quantum Cheshire Cat”. The phenomenon is named after the curious feline in Alice in Wonderland, who vanishes leaving only its grin. Researchers took a beam of neutrons and separated them from their magnetic moment, like passengers and their baggage at airport security. They describe their feat in Nature Communications. The same separation trick could in principle be performed with any property of any quantum object, say researchers from Vienna University of Technology. Their technique could have a useful application in metrology - helping to filter out disturbances during high-precision measurements of quantum systems.
Schrodinger’s paradox In Lewis Carroll’s classic children’s story, the Cheshire Cat gradually disappears, leaving only its mischievous grin. This prompts Alice to exclaim: “Well! I’ve often seen a cat without a grin, but a grin without a cat! It’s the most curious thing I ever saw in my life!” The idea of a “quantum Cheshire Cat” was first proposed in 2010 by Dr Jeff Tollaksen from Chapman University, a co-author on this latest paper. In the world familiar to us, an object and its properties are always bound together. A rotating ball, for instance, cannot become separated from its spin. (via BBC News - ‘Quantum Cheshire Cat’ becomes reality)