top Fusion Reactor Concept Could Be Cheaper Than Coal
According to the comments in the article this is based off of Deuterium, Tritium (D-T) fusion (which is the easiest to do). 80% of the energy from D-T fusion is in the form of high energy neutrons. The neutron flux is 100 times more than in conventional fission reactors which causes high levels of radiation in the vessel containing the fusion (
fusion vacuum vessel too hot for one year").
Tritium is not plentiful on this planet, so one solution that may solve both the high speed neutron energy capture and the breeding of Tritium is to surround the D-T reaction with Lithium which will 1) absorb the neutron's energy, and 2) create Tritium and Helium from the Lithium. So now we have electricity storage (Lithium batteries) and electricity generation (D-T fusion) bottle-necked by the same element: Lithium
Note that Tritium is radioactive and could leak or experience containment issues.
I am not so certain this will solve anything that current generation fission reactors don't solve just as well, except marketing / branding: I think selling the people on a fusion reactor in their backyard is easier than the fission one.
about a month and a half ago
top ITER Fusion Reactor On Track To Generating Power By 2028
wikipedia they are planning to use Deuterium-Tritium fusion reaction which makes the majority of energy through high speed neutrons: D-T reaction, which are notoriously difficult to extract energy from. Letting the neutrons bombard a stainless steel shell, which gets hot, heats water, turns a turbine, is the standard way to do things, but the steel shell becomes brittle and radioactive pretty quickly.
I hope this actually solves something rather than simply being another method to use more exotic fuel, and reactor equipment, to produce radioactive results along with power.
top Flash Mobs of Trading Robots Coalescing To Rule Markets
Please realize that the SEC levies a tax on every transaction (buy and sell)
Also the market has a fee structure that charges if one take liquidity (order execute immediately and takes an order off the book) and gives a rebate on orders that provide liquidity (order remains on book for some period of time).
In my opinion a better solution is for the market to increase the minimum latency for a transaction. For example, every second all the orders sent to the exchange are reconciled and the results sent to the originators of the orders, as well as the updating all public data like national best bid, best ask prices. This would almost completely neuter very high speed trading engines, as their data and updates on filled orders would be the same as everyone else, viz. 1 second. Note, the 1 second is an arbitrary amount of time, but I would fix it to be several times a minute, but no faster than 500 ms.
top New diabetes treatment combines insulin and hormone therapy
Though interesting, I wonder how much this is just going to enable the adult-onset diabetes people, to continue the refined sugar-laden diet that got them where they are. I have witnessed too many (overweight) people chugging quarts of sugared soda while having to shoot up insulin.
top 8 Grams of Thorium Could Replace Gasoline In Cars
It this works as reported, why not use the heat to directly power the vehicle with steam power, rather than go through the redundant process of converting the steam to electricity which drives an electric motor to convert it to velocity? It seems one could eliminate the weight and expense of the electric drive motors, and the steam-powered electric generators in vehicle applications.
top Slate: Amazon's Tax Stance Unfair and Unethical
Every state, many counties, cities, &c., have different tax rules all of which online retailers are to manage and process? Add to this the fact that the myriad tax laws can change. Who is in charge of notifying the online retailer / ensuring compliance when a municipality changes the sales tax law?
Whether some one can make an "ethical" argument for paying sales tax to a locality in which there is no physical presence aside, the attempt to shift the burden of implementing tax collection for a large set of arbitrary laws across the nation is absurd.
top Italian Scientists Demonstrate Cold Fusion?
According to this website nickle has a spot price of ~ USD 11.8 per pound and copper has a spot price of ~ USD 4.36 / pound.
So _if_ this works, it is a type of anti-philosopher's stone: converting an expensive metal into a less expensive one.