I’m generally pro sideways time, preferably with a few hills and dips. Not likely to happen unless I drop into a special rabbit hole , What Keeps Time Moving Forward? Blame It on the Big Bang
Entropy, which in rough terms is the measure of a system’s disorder, creeps up over time, as dictated by the second law of thermodynamics. To illustrate entropy’s inexorable growth, Carroll takes us to the breakfast table—you can’t unscramble an egg, he points out, and you can’t unstir the milk out of your coffee. These systems invariably proceed to disordered, or high-entropy, arrangements. Each of these examples shows how the continual growth of entropy fills the world with irreversible processes that divide the past from the future: The making of an omelet and the mixing of milk into a cup of coffee are events that work in only one temporal direction.
But why should entropy always increase? This is where Carroll turns to cosmology, which must explain why the universe began in a uniquely low-entropy state.
good little bandit. i grew up imagining the cardinal’s black mask was the sign of a bird bandit. it seems to help them deflect distorting light away from their eyes.
Now, researchers at Berkeley Lab’s Molecular Foundry, in collaboration with researcher at the University of California, Berkeley, have shown how nanocomposites with desired properties can be designed and fabricated by first assembling nanocrystals and nanorods coated with short organic molecules, called ligands. These ligands are then replaced with clusters of metal chalcogenides, such as copper sulfide. As a result, the clusters link to the nanocrystal or nanorod building blocks and help create a stable nanocomposite. The team has applied this scheme to more than 20 different combinations of materials, including close-packed nanocrystal spheres for thermoelectric materials and vertically aligned nanorods for solar cells.
“We’re just starting to understand how combining materials on the nanoscale can open up new possibilities for electronic properties and efficient energy technologies,” said Delia Milliron, Director of the Inorganic Nanostructures Facility at the Molecular Foundry. “This new process for fabricating inorganic nanocomposites gives us unprecedented ability to tune composition and control morphology.”
The medical benefits are obvious – a custom bug that can seek out and destroy a tumor or clear plak from an artery and so on. I wonder if future materials made for car bodies, plastic trash bags or even athletic shoes could be composed of materials whose biological morphology has a programmed in decompose date. Thus reverting to inert harmless refuse.
The server on the image host seems to have eaten the last version of this wallpaper.