Category Archives: Mathematics

Ocean Heat

The relentless increase:

Lubos Motl has done the arithmetic in this post Ocean heat content: relentless but negligible. This is a good post, check it out. The punchline of his calculations: the heating in the layer 0-2000 m translates to 0.065 C +/- 20%. His calculations are essentially confirmed from this ARGO page where they confirm that since the 1960s, the warming of that layer was 0.06 °C.

So, can anyone figure out why 0.06C is a big deal for the climate? Or how all that heat that is apparently well mixed in the ocean could somehow get into the atmosphere and influence weather/temperatures/rainfall on the land? Or is sequestering heat in the ocean a fortuitous ‘solution’ to the global (surface) warming problem?

It’s “relentless” in the same (and harmless) sense that a glacial advance is.

Linux On Gateway

OK, so I purchased a new laptop, a Gateway NE522 series. It came with Windows 8 installed. After doing a full Windows update, and making a recovery disk, I tried to install Federa 19 on it from a USB drive (it doesn’t have an optical drive). It wouldn’t boot, instead barfing out the following (after the jump) I’ll probably submit it to the Fedora Project for a bug report, but I’d be interested in opinions:

[Update late evening]

OK, I tried with Ubuntu as well. Same result. Dumped into a shell. I’m guessing that it’s the problem described in comments, but not sure I’ll do that experiment until tomorrow.

Continue reading Linux On Gateway

The Noble, Objective Scientist

…exists primarily in mythology:

There is deeply ingrained in American culture — particularly nowadays on the Left — the stereotype of the scientist as pure in intent and action, caring only for the Truth, let the chips fall where they may. The scientist works readily with other scientists (except when s/he is working alone, late into the night, thinking deep thoughts), accepts — nay, encourages — challenges to her/his theories and findings, welcomes new information and hypotheses, and is always willing to change his/her mind based on better data, models, and/or reasoning.

It is, to quote the late Douglas Adams, a load of dingos’ kidneys. A very large, steaming, rotting load of dingos’ kidneys.

Particularly when it comes to a politicized field like climate “science.”

StratoLaunch

Here’s an article at the WaPo about it. This isn’t correct, though:

It is always desirable to launch to the east to capi­tal­ize on the direction of the Earth’s spin. The Earth travels about 1,000 mph west to east at the equator; you need to reach a speed of 17,000 mph to get to low-Earth orbit, so there’s no point in penalizing yourself 1,000 mph by heading in the wrong direction.

No, not “always.” Only for low-inclination orbits. For very high inclination, or retrograde, it’s actually preferable to launch from a high latitude (ideally, for a retrograde orbit, you’d like to launch from a pole, to eliminate any earth rotation, because it’s rotating in the wrong direction).

McDonalds Math

This sort of thing is why we don’t want economic illiterates in charge of the economy. Hey, morons. Don’t you think that if McDonalds could just raise their prices (and hence revenues) by 17% (actually 26%), they’d have already done that?

[Update a while later]

Another question:

Let’s say McDonald’s decided to double all its salaries, so that the entry-level wage became $16 an hour instead of $8 an hour. Why would McDonald’s continue to employ their $8 an hour workers when instead they could hire “better” workers who are worth more? (And those of you who think that the skills, linguistic abilities, experience, intelligence, etc. of fast-food workers makes no difference in service don’t eat in McDonald’s much.)

Again, this is why you don’t want people making policy who don’t understand how business works. And this administration (and sadly, Congress, of both parties, but much more so among the Democrats) is full of such people.