‘photoswitches,’ – a coming breakthrough in solar energy?

Scientists Discover How to Generate Solar Power in the Dark Meet ‘photoswitches,’ a breakthrough set of materials that act as their own batteries, absorbing energy and releasing it on demand. THE ATLANTIC, TODD WOODYAPR 15 2014, The next big thing in solar energy could be microscopic.

Scientists at MIT and Harvard University have devised a way to store solar energy in molecules that can then be tapped to heat homes, water or used for cooking.

The best part: The molecules can store the heat forever and be endlessly re-used while emitting absolutely no greenhouse gases. Scientists remain a way’s off in building this perpetual heat machine but they have succeeded in the laboratory at demonstrating the viability of the phenomenon called photoswitching……….

“One design we have for such an application is purely gravity driven – the material flows from one tank to another. The flow rate is restricted so that it’s exposed to the sun long enough that it gets fully charged. Then, when it’s time to cook dinner, after the sun is down, the flow direction is reversed, again driven by gravity, and the opposite side of the setup is used as the cooking surface.”

“As the material flows back to the first tank, it passes by an immobilized catalyst which triggers the energy-releasing process, heating the cooking surface up,” he adds.

Other versions of such device could be used to heat buildings.

Kucharski said the MIT and Harvard team is now investigating other photoswitching molecules and substrates, “with the aim of designing a system that absorbs more of the sun’s energy and also can be more practically scaled up.” http://www.theatlantic.com/technology/archive/2014/04/scientists-discover-how-to-generate-solar-power-in-the-dark/360679/

1.This Month

How the viewing public was ‘protected’ from seeing what the Hiroshima and Nagasaki nuclear bombing did to people

Hiroshima and Nagasaki on the cutting room floor https://thebulletin.org/2019/08/hiroshima-and-nagasaki-on-the-cutting-room-floor/ By Thomas Gaulkin, August 5, 2019 Seventy-four years after nuclear weapons were first and last used in war, it can be challenging to conceive of the devastation they cause. But even in the immediate months after the atomic bombs were dropped on Hiroshima and Nagasaki in August 1945, news accounts offered a view of ingenuity and destruction that often elided the human cost.

The newsreels below [on original] were mainly screened to audiences in 1946 and 1947 and detail the destructive force of the explosions almost entirely through excited accounts of the structural damage to the cities. There’s occasional mention of the lost city populations and the scientific knowledge to be gained from studying their casualties, but hardly any description of what people actually suffered, let alone personal accounts. It’s instructive to look at and listen to these reports today, and contemplate what is missing.

The 12-minute reel below was produced by the US War Department in 1946. “Tale of Two Cities” makes selective use of film that was confiscated from a Japanese filmmaker, Akira Iwasaki—though you wouldn’t know that from the narration, which boasts that “army cameramen have found and filmed pictorial evidence that tells in twisted steel and stone the effect of death-dealing atomic power.” (Some twenty years later, historian Eric Barnouw obtained more of Iwasaki’s footage and produced a remarkably different narrative that documented the horrible physical impact of the attacks on Hiroshima’s citizens.)

Contrasted with the triumphant tone of the news/propaganda made for 1940s audiences, silence changes everything. Made public only decades later, the two films below —one beginning with footage of wounded victims, the other, a full-color glimpse of survivors picking up the pieces of the ruined city—report what those above do not, without a single word.

Nagasaki And Hiroshima (1945)

Harrowing Accounts from Hiroshima Survivors

Hiroshima Bomb to Today | Tour around the Atomic Hypocenter

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