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Comment: Re: 130 megawatts of energy (Score 1) 191

by bigwheel (#49029523) Attached to: Apple Invests $848 Million Into Solar Farm

Usually, PV power is rated at. Temp = 25 degrees C, and Insolation = 1000 watts/Meter**2. (peak sun and cool panels)

NREL maps provide the equivalent peak-sun hours per day for a given area. So, that is a reasonable number to work with for estimates.

But the temp rating is unrealistic for a black solar panel getting direct sunlight. As panels get hotter, their production decreases. So, some manufacturers also offer numbers for warmer temperatures.

+ - The fiddling with temperature data is the biggest science scandal ever-> 1

Submitted by schwit1
schwit1 (797399) writes "New data shows that the “vanishing” of polar ice is not the result of runaway global warming

When future generations look back on the global-warming scare of the past 30 years, nothing will shock them more than the extent to which the official temperature records – on which the entire panic ultimately rested – were systematically “adjusted” to show the Earth as having warmed much more than the actual data justified.

“How we are being tricked by flawed data on global warming”"

Link to Original Source

Comment: Re:I don't get it... (Score 1) 201

by bigwheel (#48982545) Attached to: Testosterone Increasingly Being Used To Fight Aging In Men

Devil's advocate here. Life expectancy has steadily increased despite all that bad stuff. Both in the US and worldwide

If you want to age gracefully and not take steps to repair age-related problems, then go for it.

I know that life is finite. But all things considered, I prefer to postpone death, and make the interim time as pleasant as possible. That's why I do things like exercise, eat properly, and go to the dentist. And if there is a fix to an age-related illness or problem, then I'm all for it. The hard part is figuring out what is real, and understanding the trade-offs.

Comment: Re:Just let them test out! (Score 1) 307

(GP here) This is what I was referring to. Several of my undergrad classes were graded on a curve, where only the top percentage of students receive "A"s. If it happens to be an easy class or there are a lot of top performers, then nit-picky things become enough to push your grade down to a B.

That said, I don't know if Intro to CS was one of those classes. It was only an assumption. So, criticism of my earlier statement might be called for.

Comment: Re:Just let them test out! (Score 2) 307

Same thing happened to me. (Long story as a cross-over from Physics.) As a CSci senior, they made me take the Intro class - even though I knew the material inside-out and was a tutor for the class. I volunteered to take every test in one sitting and write every programming assignment the same day. Instead, I got to sit through boring lectures and steal an A from some deserving student.

+ - NASA Study: Ocean Abyss Has Not Warmed->

Submitted by bigwheel
bigwheel (2238516) writes "The cold waters of Earth’s deep ocean have not warmed measurably since 2005, according to a new NASA study, leaving unsolved the mystery of why global warming appears to have slowed in recent years.

Scientists at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, analyzed satellite and direct ocean temperature data from 2005 to 2013 and found the ocean abyss below 1.24 miles (1,995 meters) has not warmed measurably. Study coauthor Josh Willis of JPL said these findings do not throw suspicion on climate change itself.

"The sea level is still rising," Willis noted. "We're just trying to understand the nitty-gritty details.""

Link to Original Source

Comment: Re:I dunno about LEDs, but CFLs don't last (Score 5, Informative) 602

by bigwheel (#48002325) Attached to: The Great Lightbulb Conspiracy

I've read that the Energy Star people admit they screwed up with CFL, but are determined to not make the same mistake with LED

In order to get the Energy Star label, a CFL bulb has to meet certain efficiency requirements. But the rating says nothing about longevity. In theory, fluorescent bulbs should last a long time. But the built-in electronics are the usual source of failure. This is particularly the case with ceiling lights and other bulbs where the electronics are on the top, and often in an area where they do not get much cooling. So, the cheap - or more importantly *Crappy* - bulbs can carry the same certification as the good ones. So, CFL got a bad name, which is also fail for the Energy Star folks.

With LED bulbs, the Energy Star people wanted to make sure that they don't make the same mistake. So, in order to get the label, a bulb has to meet the efficiency standards, plus demonstrate that they can handle the run-length requirements. And there are many different requirements, depending on the type of bulb and its intended usage. In order to get the Energy Star label, they are tested for something like 9 months.

So, the moral of the story is that if you buy an LED that carries the Energy Star label, it should not fail prematurely. But the down-side is that LED technology continues to improve, with the most recent chips putting out something like 250 Lumens/Watt. An agile manufacturer might be able to quickly get this technology to market with an excellent new bulb. But it cannot carry the Energy Star label until it has been through rigorous testing, which takes nearly a year.

fortune: cpu time/usefulness ratio too high -- core dumped.