If you look at the absorption and efficiency plots in the linked nature abstract, the improvement is pretty broad spectrum as it is. Based on the Fourier analysis plots, it does seem like a slightly wider pit spacing would better concentrate the energy in their desired sweet spot, but CDs and DVDs would be too wide. HD-DVD actually looks like it might have the most ideal pit spacings.

Actually, that already happened. As the abstract of the paper notes, previous research has already identified how to theoretically optimize patterns, but arbitrary patterns require expensive photo lithography equipment to create. This research shows that an existing inexpensive mass production technique generates results that are almost as good as the optimized patterns, but not quite as good because the spacing of the pits is a bit too periodic (especially across tracks rather than along them).

http://en.wikipedia.org/wiki/C...

...it wasn't the first computer.

Wealthy companies want illegal immigrants. They don't want immigrants, they want ILLEGAL immigrants, because people who only care about money want people who have little legal protection. The lack of protection means illegal immigrants will accept abuse. The "4 million undocumented immigrants" are illegal immigrants. The fact that they are given the name "undocumented" is intended to distract people from the fact that what they have done is illegal.

It seems to me that President Obama has shown that he is very weak. If rich people want something, he has a tendency to allow it. He has allowed a long list of things that are bad for the average U.S. citizen.

The fundamental issue, it seems to me, is that a child of alcoholics should not be allowed to hold a government position. An alcoholic told me, "No one like me should be president."

When Barack Obama's mother decided she didn't want to take care of him, she gave him to her parents, his grandparents, who were both alcoholics. See, for example, Obama likens grandparents to 'Mad Men' characters: "Grandmother Madelyn Dunham, who rose from secretary to bank vice president, began drinking more as her responsibilities grew."

Obama's father was a very self-destructive alcoholic, also, but he spent very little time with him.

President Obama is what is called an ACoA, an Adult Child of Alcoholics. There is a typical description of an ACoA in the article Barack Obama, Adult Child of an Alcoholic: The ACoAs, with their deep mistrust of people, have no loyalty to anyone. They are master manipulators. They live by the mantra, "What's in it for me?"

Once again, President Obama is showing no respect for the law. The U.S. government continues to help the rich get richer.