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Comment Re:Heat (Score 1) 177

I would be more interested in this if it worked the other way, warming my house.

There are lots of designs for doing that. Look at any renewable energy bulletin board (such as fieldlines.com).

Common thread is:
  - Black (or otherwise visible light absorbing) target.
  - In an insulated box.
  - With a glass window (that does NOT have an infrared reflective coating)
  - And some way of transferring the heat from the black target to the house air.

Glass is opaque to infrared and passes visible light. Sunlight goes through, is absorbed by the black material, and heats it (to the tune of about a kilowatt per square meter at noon). The material re-radiates, but it is far too cool to re-radiate in the visible spectrum. So it re-radiates in the infrared, which doesn't escape through the glass and is thus re-absorbed.

It's called "The Greenhouse Effect". B-)

In one of my favorite designs the black target is a series of tubes consisting of used aluminum drink cans with the tops and bottoms removed, painted black. They're very good at absorbing light, because it takes multiple bounces down the valley between the tubes, giving the paint many chances to absorb it. A 4" computer fan pumps air through the box to extract the heat.

But there are LOTS of other designs. Including houses with large south or south-east facing windows and overhanging roofs that shade them in the summer but not in the winter (to rough-tune the absorption). The floor, walls, furniture, etc. serve as the visible light absorber.

My ranch house works like that - a little too well. In the afternoon it will git to 90+ degrees when it's single-digit temperatures outside.

Comment Re:Too good to be true. (Score 1) 177

It's a neat idea, but what happens in the winter?

Put a cover over it.

Glass is good. It is pretty much opaque to far infrared. Instead of seeing the cosmic background temperature of a few degrees kelvin, it will see the temperature of the glass - which is about the same as its own temperature. So the radiative heat flow will be just about zero.

But ANYTHING opaque to infrared will do the same.

Another approach: Instead of coating the house, coat a radiative cooler to make chill water, and pump that through a heat exchanger in your forced air heating/air conditioning system. Don't want cooling? Don't pump the water. (Adjust how much you pump it to regulate your temperature.)

That's not "no power", but pumping chill water is very little power, and you need to circulate the air anyhow. Most of the energy cost of air conditioning is refrigeration, and you still get that for free.

Comment Re:Not viable on Windows 10 (Score 1) 185

AC is full of crap. Never had issues with Windows 10 and having a separate admin account (which is the best policy no matter the operating system).

I would argue that not relying on a tie between accounts and privileges is a better policy. It may take more work to set up something like selinux and capabilities, but not a lot of malware or Oracle scripts (but, I repeat myself) can deal with that.

Comment RTFA. They DID try it on people. (Score 1) 151

RTFA. Then follow the link to the paper. They DID try it on humans. Worked reasonably well (though the sample was small so it was more "does this maybe work on people, too? Is it worth a big study to check?" rather than "do all the results reproduce in people just like mice or are they quantitatively different in THIS way?").

Interestingly, they used a proprietary commercial boxed Fasting Mimicing Diet - L-Nutra's ProLon (Developed by a team including a USC Davis professor specializing in gerontology and life-extension) - on the human experimental subjects.

Government

FCC To Halt Rule That Protects Your Private Data From Security Breaches (arstechnica.com) 117

According to Ars Technica, "The Federal Communications Commission plans to halt implementation of a privacy rule that requires ISPs to protect the security of its customers' personal information." From the report: The data security rule is part of a broader privacy rulemaking implemented under former Chairman Tom Wheeler but opposed by the FCC's new Republican majority. The privacy order's data security obligations are scheduled to take effect on March 2, but Chairman Ajit Pai wants to prevent that from happening. The data security rule requires ISPs and phone companies to take "reasonable" steps to protect customers' information -- such as Social Security numbers, financial and health information, and Web browsing data -- from theft and data breaches. The rule would be blocked even if a majority of commissioners supported keeping them in place, because the FCC's Wireline Competition Bureau can make the decision on its own. That "full commission vote on the pending petitions" could wipe out the entire privacy rulemaking, not just the data security section, in response to petitions filed by trade groups representing ISPs. That vote has not yet been scheduled. The most well-known portion of the privacy order requires ISPs to get opt-in consent from consumers before sharing Web browsing data and other private information with advertisers and other third parties. The opt-in rule is supposed to take effect December 4, 2017, unless the FCC or Congress eliminates it before then. Pai has said that ISPs shouldn't face stricter rules than online providers like Google and Facebook, which are regulated separately by the Federal Trade Commission. Pai wants a "technology-neutral privacy framework for the online world" based on the FTC's standards. According to today's FCC statement, the data security rule "is not consistent with the FTC's privacy standards."
Android

Google Renames Messenger To Android Messages as the Company Pushes RCS (betanews.com) 90

We have come a long way from the age of flip phones and nine-key texting. Even as if group messaging and instant messengers took over, the SMS has largely retained its core standard over the years. Google wants to change that, and for this, it has been working with hundreds of carriers and manufacturers around the world to bring the text message into the 21st century. Using a standard called Rich Communications Services, the group plans to make a texting app that comes with your phone and is every bit as powerful as those dedicated messaging apps. This would make all the best features available to everyone with an Android phone. From a report on BetaNews: Just last week we were talking about Google's championing of RCS (Rich Communication Services), the successor to SMS. Now the company has renamed its Messenger app to Android Messages as it aims to become not just the default SMS app, but the default RCS app for Android users. Part of the reason for the name change is to convey the idea that the app is now about more than just one type of message. Google is betting big on RCS and this is hinted at in the app update description which says it adds "Simpler sign-up for enhanced features on supported carriers."

Comment Re:Quantity vs Quality (Score 1) 146

Depends not only on the person, but also the task. Implementing complex algorithms efficiently in code tends to require more attention and focus than sitting in hours long meetings listening for the occasional cue to speak for 30 seconds.

The latter is, without doubt, the most tiring.

When I've accomplished something at work, I come home far more alert than when it's spent on politics and communications.

Comment Re:"Toxic" comments huh? (Score 1) 195

Well, let's all bow down the moral arbiters of justice then. I'm sure that they'll be right on top of removing speech they disagree with.

Never attribute to opinion that which can be adequately explained by greed.

They may agree fully with what you said, but a comment that a company's customer support sucks is still going to be removed.
Preferably automatically, so they won't have to pay an outsourced minimum wage slave to do the job.

Comment Re:Maybe (Score 1) 206

The problem, as I see it, is that journalists have stopped translating, and echo the jargon even when it doesn't translate well.

Even worse than the astronomical definition for planet being out of touch with the rest of the world is the astronomical definitions of gas (only hydrogen and helium), metal (all other elements), and ice (any molecules comprising both "gas" and "metal" atoms). To an astronomer, nitrogen is a metal, and methane gas is an ice.

Comment Re:How many times will this story get repeated? (Score 1) 178

Yeah. While I don't expect editors here to go back and read the last five years (while that would have been nice to get a better understanding of Slashdot), I would expect them to be able to do a search. Especially for terms that won't give a boatload of false positive hits, like "ketchup".

It's not a hard job. But apparently too hard.

Science

Scientists Discover a Way To Get Every Last Drop of Ketchup Out of the Bottle (bbc.com) 178

Slashdot reader schwit1 quotes a report from BBC: Scientists in Boston have found a way to get every last drop of ketchup out of the bottle. They have developed a coating that makes bottle interiors super slippery. The coating can also be used to make it easier to squeeze out the contents of other containers, such as those holding toothpaste, cosmetics and even glue. The researchers at the Massachusetts Institute of Technology (MIT) believe that their innovation could dramatically reduce waste. In its manufacture, the container must first be coated on the inside with a rough surface. A very thin layer is then placed over this. And, finally, a liquid is added that fills in any troughs to form a very slippery surface -- like an oily floor. The ketchup hovers on top and just glides out of the bottle. According to Prof Kripa Varanasi, who developed the slippery surface, the technology is completely safe. "The cool thing about it is that because the coating is a composite of solid and liquid, it can be tailored to the product. So for food, we make the coating out of food-based materials and so you can actually eat it."

schwit1 adds: "Pretty slick."

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