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Comment Good excuse (Score 2) 144

It's a good excuse to drag the fire pit and the grill around to the front of the house and invite the neighbors to do the same. Then spend the night watching what fireworks people set off (illegally) in the neighborhood and what we can see of the municipal display over the intervening houses and trees. The fireworks viewing is accomplished while drinking various libations and eating grilled meats, etc. and sitting around a roaring fire.

Note: I haven't melted the fire pit yet but there's still time.

Cheers,
Dave

Comment Re:Taxi licenses are crazy expensive (Score 2) 334

Why?

Compensate them because their government backed monopoly in which they prevented hundreds if not thousands of others from profiting because they worked the system in such a way that guaranteed the laws of supply and demand didn't affect their business? They're lucky there isn't a lynch mob coming after them for the affront to the natural market, losing a protected monopoly is no reason to reward them.

Comment Re:Taxi licenses are crazy expensive (Score 5, Interesting) 334

It's their own fucking faults. They lobby to make sure this is the system that's in place to prevent competition from companies like Uber. They got the laws they paid for, it's the people who bought the first wave of licenses/medallions whatever that made bank, now everyone else has to deal with it.

An upstart breaking that system is exactly what real business needs.

Programming

To Learn (Or Not Learn) JQuery 126

Nerval's Lobster writes: jQuery isn't without its controversies, and some developers distrust its use in larger projects because (some say) it ultimately leads to breakage-prone code that's harder to maintain. But given its prevalence, jQuery is probably essential to know, but what are the most important elements to learn in order to become adept-enough at it? Chaining commands, understanding when the document is finished loading (and how to write code that safely accesses elements only after said loading), and learning CSS selectors are all key. The harder part is picking up jQuery's quirks and tricks, of which there are many... but is it worth studying to the point where you know every possible eccentricity?

Comment Second law of thermodynamics. (Score 2) 292

we have a way to turn electricity directly into heat. But there is no direct way to turn heat into electricity. It has to go thru a second step of mechanical energy to spin a magnet to create electricity.

You can go from electricity directly to heat because that increases entropy. You can't go from heat to anything useful because that decreases entropy, and entropy of a closed system only increases. The best you can do is a heat engine, working off a temperature DIFFERENCE. (Some of them also work backward as heat pumps, to go from electricity to heat more effectively, by also grabbing some heat from elsewhere to include in the hot end output.)

There ARE at least two major forms of electronic heat engines - direct from temperature differences to electricity, with only charge carriers as the moving parts: Thermoelectrics (thermocouples, peltier junctions, and thermopiles of them) and thermionics (both heat-driven vacuum diode generators and a FET-like semiconductor analog of them). Both are discussed in other responses to the parent post.

Comment Thermionics (Score 3, Interesting) 292

TEs are ridiculously inefficient and aren't looking to be much better anytime soon

Because thermoelectric effect devices leak heat big time.

However there's also thermionics. The vacuum-tube version is currently inefficient - about as inefficient as slightly behind-the-curve solar cells - due to space charge accumulation discouraging current, but I've seen reports of a semiconductor close analog of it (as an FET is a semiconductor close analog of a vacuum triode) that IS efficient, encouraging the space charge to propagate through the drift region by doping tricks (that I don't recall offhand). The semiconductor version beats the problems that plague thermoelectrics because the only charge carriers crossing the temperature gradient are the ones doing so in an efficient manner, so the bulk of the thermal leakage is mechanical rather than electrical, and the drift region can be long enough to keep that fraction down.

Comment Re: In other words (Score 1) 305

So, because they said, "We're going to commit treason," before they did it makes it not treason? Sorry, but allowing unilateral opt out of government by any individual or group makes government meaningless. So, saying, "You're not the boss of me!" first doesn't alleviate the charge of treason.

I've got to say, I hate the idea that if you join the US you, it's eternal on pain of death. I'm pretty much universally for the devolution of powers and rights to smaller political entity. Just look at countries ranked on the wellness and happiness scales. People have far greater trust in government institutions in smaller countries.

I believe states should be able to secede, regardless of reason. I'm not saying the southern secession followed a good protocol in deciding when to secede, but I think you would be very surprised if you actually read some of the history of how the transition took place. Think about everything that has to switch over. The federal government was far less monstrous 150 years ago, but courthouses, judges, tax officials, military installations, etc, all had a transition to go through. Many were very straightforward. Courthouse employees came to work one day as US employees, the next as Confederates. IMO, once the secession took place, the view of the north was the treason already occurred.

Short version: treason can be a justified rebellion if the state is committing crimes, it's just treason when done to continue committing crimes.

No, completely wrong. Treason can be justified IF YOU WIN, in which case, it's no longer treason.

Comment Re: In other words (Score 1) 305

Why do you assume that just because I did a poor job at imitating a Southern accent that it was "ebonics?" Frankly, I was trying to use the character Huckleberry Finn's dad as a reference, and apparently mixed things up *shrug*.

That's why I was confused! Perhaps you have never actually talked to someone who has a southern accent?

And why would making fun of someone crying that one state government won't be flying the symbol of those who committed treason in defense of chattel slavery cause you to support said crybaby? I, personally, think that the retailers have gone overboard. I would love for every ignorant f*ck who thinks the South rebelled for any reason other than to maintain its "peculiar institution," and wants to support that banner of savage traitors, to wear it willingly. That way they'll have a nice, big, scarlet letter that will let everyone else know that they're somewhere between ignorant fools and bigoted scum.

You know how you hate southerners and think southern culture is reprehensible? That's why. I don't support statehouses flying confederate flags, but I sure as crap support retailers, ebay sellers, etc, selling them. I remember being disgusted when I read about how Nazi memorabilia or historical items were banned from resale in Germany--history-avoiding pansies. Well, now here we are. In fact we're worse--you can still buy Nazi gear, but mention of a confederate flag is verboten!

History is written by the victors. We know who the victors in the civil war were. By the time of the civil war war, every one of my ancestors had been in the US for at least one generation. I'm fortunate enough to have the diary one of ancestor who participated in Sherman's march to the sea (he was from Ohio). Completely harrowing stuff. On another side, another ancestor fought for the south at Gettysburg (he was from the high mountains of VA/NC area). He lost six brothers in just two days at Gettysburg and was severely wounded. Interestingly enough, not a single ancestor I have tracked down who fought for the confederacy ever owned slaves (at least that I can tell). Most of them are from the mountains, where slavery was never as big. Slavery was the raison d'etre of the civil war for elite on both sides. That's not why the commoners fight. Commoners never fight for the real reason a war is being fought (or rarely, at least), they fight because they are whipped up into some kind of group-fervor. It's clear that even today the northern/southern culture divide exists and is pretty damn pungent.

Comment Then again. (Score 1) 62

I got the impression from the (sketchy) article that repeater AMPLIFIERS were still needed but repeater REGENERATORS were not.

Then again - another part of the article makes it look like an additional result was that they could boost this less-subject-to-degradation-by-nonlinear-distortions signal at the start until the fibre itself was acting non-linearly, in order to get a signal strong enough to survive a much longer hop.

So it's not clear to me whether the distance was achieved by:
  - long hops enabled by strong signals, and NO amplifiers
  - longer propagation without regenaration using JUST amplifers
  - a combination of the two: Both getting long total length without regeneration AND being able to use stronger signals and thus use larger space between the amplifier-type repeaters.

Comment but not amplifiers (Score 1) 62

Since the diameter of the earth is 7 926.3352 miles, this could conceivably remove any need for repeaters.

I got the impression from the (sketchy) article that repeater AMPLIFIERS were still needed but repeater REGENERATORS were not.

I.e. you still needed to boost the strength of the signal to make up for the losses. But the progressive degradation of the quality of the signal - with data from different frequency bands bleeding into other bands (especially in the amplifiers themselves) due to nonlinear "mixing" processes - had been headed off, by synchronizing the frequencies of all the carriers to exact multiples of a common basic difference-between-the-carriers frequency.

This apparently sets up a situation where the distortion products of each carrier's interaction with nonlinear processes cancel out with respect to trying to recover the signals on another carrier - much the way the modulation products do in OFDM modulation schemes. In OFDM it allows you to make essentially total use of the bandwidth. In this system it lets you use simple, cheap, amplifiers to get your signal boost, rather than ending the fibre before things get too intertwingled, demodulating all the signals back to data streams and recovered clocking, then generating a fresh set of modulated light streams for the next hop - MUCH more expensive and power hungry.

Comment Re: Hawaii is not legally a part of the USA (Score 2) 305

That's a bad argument. The US says they annexed Hawaii and built military bases there. Nobody stopped them. Ergo, Hawaii is part of the US.

Russia says they annexed Crimea (with a popular vote even [allegedly]) and built military bases there (technically already had military bases there). Nobody stopped them. Ergo, the Crimea is part of Russia.

Actually, the Russian claim to the Crimea goes back far longer and probably has more substance.

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