Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror

Comment NASA.gov has good Mars info (Score 1) 478

Mars is of course getting a lot of attention lately, so the Mars section on NASA.gov is pretty good. Most of it in the Mars is pretty straight, without arguing about global warming, adding adjustments to make the data fit the model or whatever.

I'm sure you can find your way around mars.jpl.nasa.gov, but here's one page to start with. Many people are rightfully concerned about measuring the polar ice caps on earth. When reductions were measured in the north* that was considered major evidence of global warming. Here NASA talks about the same thing happening at a much faster rate on Mars. NASA measured the reduction at 3 meters per Mars year.

http://mars.jpl.nasa.gov/galle...

Note again I'm not saying this effect accounts for ALL or even MOST of the warming on earth. It seems to account for between 15%-60% of it, probably close to 30%. The majority is very likely carbon dioxide and carbon monoxide, with deforestation being a problem we should keep in mind.

* Some say we should ignore the 30% INCREASE in polar ice on the south pole. Polar ice only matters when it fits your campaign pitch, perhaps.

Comment Re:Too late (Score 1) 280

I think most people just ignore any SJW/whatever/controversy issues,
but it's things like this. You can see that Github is becoming an unpleasant place to work, and focusing on hiring salespeople instead of programmers, and at that rate the good programmers will leave, and the bug tracker will start filling up, and the product will get worse and worse. That's the way things go.

Comment Energy mix indeed (Score 1) 143

> There's an energy mix for a variety of reasons.

Exactly. One big reason is that some of the stable, reliable sources aren't as clean as we'd like (coal, natural gas, nuclear), while the clean sources are either not as reliable (wind, solar) or available only in very limited locations and amounts (hydro, geothermal).

The mix allows us to use the cleanest stuff when and where it's available, then throttle the slightly less-clean stuff like natural gas to meet demand, with something very steady like nuclear providing a base level that meets minimum demand.

If you're interested in the mix, here's a paper that may interest you. Of course all figures in the paper are cited to reliable sources. It seems like _maybe_ you don't care for math at all, and if that's the case this paper isn't for you. If you don't mind just a little math, this paper goes over many different sources in the mix, discussing the costs and benefits of each, and how they can be combined.

The figures for solar-electric have improved a bit in the last 2-5 years, so the solar-electric number in the paper are very slightly outdated. The conclusion hasn't changed though - solar electric is a good supplemental source, not a reliable inexpensive source capable of providing the bulk of of energy needs.

The paper, if you're interested and don't mind some fairly easy math:
https://docs.google.com/docume...

Comment My understanding of cubed. Your journal entry is s (Score 1) 143

Your journal entry and some of your other posts indicate that you're an intelligent person.

I'm intrigued why it's hard for you to understand that Y = X^3 means that as X changes, Y changes a LOT. That when Y equals X cubed, a large value X means a VERY large Y, and conversely a small value for X means a comparatively tiny value for Y.

Really, your other posts seem like this arithmetic shouldn't be hard for you. A strong wind has a LOT of power. A light wind has almost no power in comparison. It makes wind farm design a bit tricky. It also means that wind can be a really good way to reduce natural gas generation when the wind is good, and doesn't provide significant power when it's not windy. I'm really surprised you're having trouble with this, you're definitely not stupid.

Comment Oh, all the other planets have forest fires. Ok (Score 1) 478

Okay, so you're explanation is that all of the other planets have big forest forest fires over the last few decades. Okay.

Or are you saying that the rest of the planets (and their moons) have volcanoes, which cause them to warm up? Which do you think best fits the data?

Slashdot Top Deals

10.0 times 0.1 is hardly ever 1.0.

Working...