Search found 1339 matches

by frezik
Mon Nov 21, 2011 10:22 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 0980: "Money"
Replies: 375
Views: 104750

Re: 0980: "Money"

Think I found a typo: "Ronald Laudner" (under billionaires -> fashion) should probably be "Ronald Lauder". I couldn't find anything interesting for a Google search for "ronald laudner" or "ronald laudner billionaire". "Lauder" would be the son of Est...
by frezik
Fri Sep 23, 2011 5:14 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 0955: "Neutrinos"
Replies: 159
Views: 43558

Re: 0955: "Neutrinos"

Yeah, I know, I'm sounding like one of those crackpots I love to hate, but still... :) Yes, yes, you are. There's basically one area of physics considered unassailable: thermodynamics. It's the closest thing physics has to a mathematical axiom. Everything else lies on a range of probability. As Ran...
by frezik
Wed Feb 09, 2011 3:04 pm UTC
Forum: Science
Topic: Why are cars and engines made by the same companies?
Replies: 27
Views: 3087

Re: Why are cars and engines made by the same companies?

The same applies to VolksWagen Group. They own 7 car brands plus Scania and the VW Commercial Vehicles Division. Just because an engine has an Audi or Lamborghini badge on it doesn't mean it came from that subsiduary. Lamborghini would. Their V12 has been the same basic engine block for almost 50 y...
by frezik
Wed Feb 09, 2011 5:33 am UTC
Forum: Science
Topic: Why are cars and engines made by the same companies?
Replies: 27
Views: 3087

Re: Why are cars and engines made by the same companies?

Some exceptions off the top of my head: Ford Superduty trucks (F250 and up) ran International diesel engines for a long time (though currently use Ford's own engines). Mazda puts a lot of their own engines into Ford models. The Mazda3 is basically a Ford Focus with Mazda's own engine and the interio...
by frezik
Fri Feb 04, 2011 4:12 am UTC
Forum: News & Articles
Topic: IPv4 addresses to run out by the end of this year
Replies: 35
Views: 3440

Re: IPv4 addresses to run out by the end of this year

I wonder if organizations will end up selling back address space. Early adopters got massive networks, I know there are a few universities with multiple class A's and more than a couple companies that have the same. There are addresses available out there, getting them to the right people is the pr...
by frezik
Fri Feb 04, 2011 4:01 am UTC
Forum: General
Topic: xkcd is a "legendary" site, according to Mensa
Replies: 61
Views: 8413

Re: xkcd is a "legendary" site, according to Mensa

Not everybody is that lucky though. It's hard to be very smart when everbody around you is not. You'll feel alone and out of touch. You might even get bullied in school because you're smart. So you make sure you don't look too smart. Which means your grades suffer, which is rather unfortunate becau...
by frezik
Wed Feb 02, 2011 6:06 pm UTC
Forum: General
Topic: ipv4 Exhaustion
Replies: 56
Views: 7879

Re: ipv4 Exhaustion

(To me, it seems like the fact that DSL/cable modems have to support it at all is a major breakage of OSI layering.) No, it's actually a triumph of layering. If you are going to swap out the routing layer, where IPv4 and IPv6 live, every device doing routing is going to have to know. That's just th...
by frezik
Wed Feb 02, 2011 3:12 pm UTC
Forum: General
Topic: ipv4 Exhaustion
Replies: 56
Views: 7879

Re: ipv4 Exhaustion

I'm not a DSL guy, so I might be wrong about this next bit, but I'm pretty sure that most DSL modems are actually modem/gateway combos. That's where you get into trouble if you want IPv6 connectivity through to your PC, because most of them don't support IPv6 on the management or the gateway side, ...
by frezik
Tue Feb 01, 2011 8:44 pm UTC
Forum: General
Topic: ipv4 Exhaustion
Replies: 56
Views: 7879

Re: ipv4 Exhaustion

One question to those who have obviously studied this more than I have--I'm on a DSL modem with 6to4 setup on my router (a Netgear WNR3500 running DD-WRT). The test on test-ipv6.com gives me a decent enough score considering that I don't have any official word on IPv6 support from my ISP. What kind ...
by frezik
Tue Feb 01, 2011 5:23 am UTC
Forum: General
Topic: ipv4 Exhaustion
Replies: 56
Views: 7879

Re: ipv4 Exhaustion

The way IPv6 is subnetted, all LANs are /64s. There is no reason to ever use a subnet smaller than /64 in IPv6 For most individuals and businesses a /112 would be overkill for public IP addresses. While you say there is no reason to use a subnet smaller than /64, I see no reason to ever use a subne...
by frezik
Sat Jan 08, 2011 8:16 pm UTC
Forum: News & Articles
Topic: Congresswoman Gabrielle Giffords Shot
Replies: 453
Views: 54346

Re: Congresswoman Gabrielle Gifford Shot

You mean the cool heads like the ones that will jump from congresswoman shot to vast political conspiracy? This, please. I see crap like this too much in the Tea Party. Stop posting that Palin poster. How about the twitter post where she calls for conservatives to "reload"? Poorly-chosen ...
by frezik
Sat Jan 08, 2011 7:42 pm UTC
Forum: News & Articles
Topic: Congresswoman Gabrielle Giffords Shot
Replies: 453
Views: 54346

Re: Congresswoman Gabrielle Gifford Shot

mmmcannibalism wrote:You mean the cool heads like the ones that will jump from congresswoman shot to vast political conspiracy?


This, please. I see crap like this too much in the Tea Party. Stop posting that Palin poster.
by frezik
Thu Jan 06, 2011 8:46 pm UTC
Forum: Fictional Science
Topic: What fictional science is required for space-fighers?
Replies: 131
Views: 17019

Re: What fictional science is required for space-fighers?

A more long-term justification might be in retrofitting civilian equipment for military use. That's the path Gundam usually takes. It's been tried in both world wars . That being said, while it has limited use against a foreign military, it is extremely useful as a policing action. Half-tracks are ...
by frezik
Wed Jan 05, 2011 2:21 am UTC
Forum: Science
Topic: Anti-Matter Alchemy?
Replies: 19
Views: 2158

Re: Anti-Matter Alchemy?

Sir_Elderberry wrote:The LHC is actually working on making cool amounts of anti-hydrogen. There was stuff about it in the news a couple weeks ago.


Hush, we don't want the Dan Brown fans to hear.
by frezik
Tue Jan 04, 2011 9:27 pm UTC
Forum: Science
Topic: Anti-Matter Alchemy?
Replies: 19
Views: 2158

Re: Anti-Matter Alchemy?

Seems like it'd be cheaper to bombard stuff with protons or neutrons to get what you want. Still not enough to make it profitable, though.
by frezik
Tue Jan 04, 2011 6:17 pm UTC
Forum: News & Articles
Topic: IPv4 addresses to run out by the end of this year
Replies: 35
Views: 3440

Re: IPv4 addresses to run out by the end of this year

Not to mention the basic economics/Game Theory involved. It would be best for all of us if we got onto IPv6 as soon as possible, but there's little incentive for each individual to bother.
by frezik
Tue Jan 04, 2011 2:51 pm UTC
Forum: News & Articles
Topic: IPv4 addresses to run out by the end of this year
Replies: 35
Views: 3440

Re: IPv4 addresses to run out by the end of this year

I figure the extra address space will be enough for a pan-galactic civilization. It's ten billion trillion addresses per star in the observable universe, and almost a million billion trillion per star in the Milky Way. Still strikes me as overkill. 2 64 would still give you millions of addresses pe...
by frezik
Tue Jan 04, 2011 5:17 am UTC
Forum: Science
Topic: 2 people with the same DNA?
Replies: 16
Views: 4716

Re: 2 people with the same DNA?

The Birthday Problem must be taken into account here. If there are 210,000 different genomes to consider, then with 25,000 people, there is a 50% chance that there are two of them with the same DNA.

Still a very large number, to be sure.
by frezik
Tue Jan 04, 2011 5:09 am UTC
Forum: News & Articles
Topic: IPv4 addresses to run out by the end of this year
Replies: 35
Views: 3440

Re: IPv4 addresses to run out by the end of this year

Plus, if it was just a matter of moving to 128-bit addresses, the transition might have been wrapped up before eBay had its IPO. Instead, the IPv6 standard also puts in a whole lot of fundamental fixes, which are all very nice in themselves, but caused transition plans to be delayed and made impleme...
by frezik
Tue Jan 04, 2011 1:03 am UTC
Forum: News & Articles
Topic: IPv4 addresses to run out by the end of this year
Replies: 35
Views: 3440

Re: IPv4 addresses to run out by the end of this year

Bhelliom wrote:Couldn't ISPs do something like NAT but on a larger scale?


No. Please, no.
by frezik
Mon Jan 03, 2011 9:01 pm UTC
Forum: Science
Topic: Guy on facebook page denies germ theory
Replies: 39
Views: 5780

Re: Guy on facebook page denies germ theory

These things tend to start with something that's reasonable enough, but without being properly critical of further jumps in logic. 1) Start with the idea that big pharmaceuticals do things in their own self-interest (no problem so far). 2) Next, find out about specific cases where they've munged or ...
by frezik
Mon Jan 03, 2011 5:02 pm UTC
Forum: Fictional Science
Topic: What fictional science is required for space-fighers?
Replies: 131
Views: 17019

Re: What fictional science is required for space-fighers?

Space-borne fighters could be useful in a situation where having concealed defences are nececarry. Suppose that a ship required weapons, but could not (or could not be seen to) mount them externally. If it stored a good number of fighters in a "cargo bay" refitted into a hangar, then it c...
by frezik
Sat Jan 01, 2011 5:13 pm UTC
Forum: Fictional Science
Topic: Possible alien technologies, trade secrets
Replies: 38
Views: 7123

Re: Possible alien technologies, trade secrets

The Wankel engine. No human could possibly have designed the Wankel engine. And the Hiroshima bomb was dropped as part of an elaborate urban renewal project set in motion by the Greys. With the extra room, Mazda could build their main factory there and start turning out Wankels. IT ALL MAKES SENSE ...
by frezik
Wed Dec 29, 2010 6:32 pm UTC
Forum: Science
Topic: Can someone explain how Megajoules and railguns?
Replies: 24
Views: 3269

Re: Can someone explain how Megajoules and railguns?

Since the railgun uses electricity is there a 'kick' to the gun when it fires? And how! The principal design issue with railguns is preventing the "kick" (actually mostly perpendicular to the barrel) from blowing the rails apart. But they seem to have solved this with the simple expedient...
by frezik
Wed Dec 29, 2010 5:19 pm UTC
Forum: Science
Topic: Can someone explain how Megajoules and railguns?
Replies: 24
Views: 3269

Re: Can someone explain how Megajoules and railguns?

I'm a bit surprised air-to-air missiles are not much faster than jets ('only' mach .5 faster). Those numbers are with afterburners, though, which are the worst gas-guzzlers in the world; a pilot typically wouldn't use them once engaged. Most jets do less than mach 1 without the afterburners turned ...
by frezik
Wed Dec 29, 2010 4:19 pm UTC
Forum: Science
Topic: Can someone explain how Megajoules and railguns?
Replies: 24
Views: 3269

Re: Can someone explain how Megajoules and railguns?

That's pretty much spot on. Jane's says it was a 10.4 kg projectile travelling at 2.5 km/s (Mach 7). Apparently energy figures given for railguns are always kinetic energy of the projectile. Just out of curiosity, what kind of speed do fighter jets and missiles reach? F-22 gets a little over mach 2...
by frezik
Wed Dec 29, 2010 3:59 pm UTC
Forum: Science
Topic: Can someone explain how Megajoules and railguns?
Replies: 24
Views: 3269

Re: Can someone explain how Megajoules and railguns?

So no, they won't replace conventionnal weapons anytime soon, but there are a number of situations where they will be superior. For some definitions of "soon". The US Navy expects to have these in operation by 2025. The versions for aircraft catapults will be fitted on the new Gerald R. F...
by frezik
Tue Dec 28, 2010 6:08 pm UTC
Forum: Science
Topic: Can someone explain how Megajoules and railguns?
Replies: 24
Views: 3269

Re: Can someone explain how Megajoules and railguns?

Let's put it into numbers: If 33 MJ was expended over one millisecond, then that's 33 GW of power. So what you're saying, then, is that we need a railgun that expends 33 MJ in 700ms. Edit: Also, doing some other math. For these figures: 1 gal of petrol = 6.7lbs 1 kg = 2.2 lbs 1 kg of petrol = 0.33 ...
by frezik
Mon Dec 27, 2010 6:56 pm UTC
Forum: Science
Topic: The Energy Demand of Thinking?
Replies: 17
Views: 2151

Re: The Energy Demand of Thinking?

Does our brain expend even more energy when thinking than when we're on "autopilot"? Does a developed mind expend more energy than an undeveloped one? It would have to in some way. One of the suggested resolutions for Maxwell's Demon is that deciding to let a particle through or not means...
by frezik
Sun Dec 26, 2010 11:33 pm UTC
Forum: Fictional Science
Topic: Favourite faster than light technology
Replies: 92
Views: 20432

Re: Favourite faster than light technology

Andromeda had a pretty interesting one. Navigation within the wormhole couldn't be predicted by AIs, even strong ones. To get anywhere without random jumping around, you need a well-trained person who could intuitively navigate the stream. Basically, I like FTL that has some kind of built-in limitat...
by frezik
Sun Dec 26, 2010 11:08 pm UTC
Forum: Fictional Science
Topic: Best invocations of pseudoscience
Replies: 12
Views: 4534

Re: Best invocations of pseudoscience

Portal. You can pretty easily make a Perpetual Motion Machine out of the portal gun, like building an endless waterfall. I suppose if the creators wanted to fix it, they could say that GlaDoS sustains the open portals by feeding it energy remotely, and you'd never get out more energy than you're fee...
by frezik
Sun Dec 26, 2010 10:56 pm UTC
Forum: Fictional Science
Topic: What fictional science is required for space-fighers?
Replies: 131
Views: 17019

Re: What fictional science is required for space-fighers?

One idea I've had is to reverse the 'hyperdrive dichotomy' that exists in many settings - in those settings, only large ships have hyperdrives, acting as carriers for smaller vessels. Well, you could change that to having hyperdrives limited on mass - the more mass you try to shift using a hyperdri...
by frezik
Fri Dec 24, 2010 5:52 pm UTC
Forum: News & Articles
Topic: 8 year old children publish scientific bee study
Replies: 9
Views: 1998

Re: 8 year old children publish scientific bee study

Izawwlgood wrote:I think if anything, at this age, everyone's sort of a scientist at heart. Kids are curious, and having them associate 'new stuff!!!' with 'science!' is a good thing.


As I like to say, children have boundless curiosity; the people who never lose it are called Scientists.
by frezik
Fri Dec 24, 2010 3:55 am UTC
Forum: Science
Topic: particle vs wave explanation
Replies: 25
Views: 3675

Re: particle vs wave explanation

This wave-particle thing always bothered me as well. If things aren't waves or particles, then how do we actually think about them? As either particles or waves. Whichever is more convenient at the time. I personally think it's weird and wonderful that after all that dithering about trying to figur...
by frezik
Mon Dec 20, 2010 5:07 pm UTC
Forum: News & Articles
Topic: Cops Deploy Bouncy Castle for Jumper
Replies: 15
Views: 2144

Re: Cops Deploy Bouncy Castle for Jumper

Would any of our more physics-inclined posters be able to calculate if that would actually work or not? I'd imagine he'd either bottom-out and still crack his skull, or he pop the thing and still crack his skull.
by frezik
Sat Dec 18, 2010 7:09 pm UTC
Forum: News & Articles
Topic: Wikileaks cable: Cubas amazing heath care system is a myth.
Replies: 50
Views: 4425

Re: Wikileaks cable: Cubas amazing heath care system is a my

Did anyone really believe that they have not just a good one but a decent healthcare system? Next Wikileaks report: Africa is poor, water is wet There is plenty of objective data that indicates that they do have a pretty good system. Life expectancy and infant mortality is about the same as the US....
by frezik
Thu Dec 16, 2010 1:25 am UTC
Forum: News & Articles
Topic: Bradley Manning tortured
Replies: 429
Views: 46162

Re: Bradley Manning tortured

There is also the 6th amendment to consider: “In all criminal prosecutions, the accused shall enjoy the right to a speedy and public trial, by an impartial jury of the State and district wherein the crime shall have been committed, which district shall have been previously ascertained by law, and t...
by frezik
Thu Dec 16, 2010 1:03 am UTC
Forum: News & Articles
Topic: Bradley Manning tortured
Replies: 429
Views: 46162

Re: Bradley Manning tortured

There is also the 6th amendment to consider: “In all criminal prosecutions, the accused shall enjoy the right to a speedy and public trial, by an impartial jury of the State and district wherein the crime shall have been committed, which district shall have been previously ascertained by law, and t...
by frezik
Tue Dec 14, 2010 4:48 pm UTC
Forum: News & Articles
Topic: Lighter bikes, not faster to commute on...
Replies: 21
Views: 3090

Re: Lighter bikes, not faster to commute on...

Do you buy a lighter car to drive faster? As my little mini weighs less than a Veyron. The mini should be quicker right? Possibly quicker, but not faster. In drag racing, "quick" refers to acceleration, and "fast" refers to top speed. The Veyron is quick, but it's extremely heav...
by frezik
Mon Dec 13, 2010 6:25 pm UTC
Forum: Movies and TV Shows
Topic: Top Gear for People Driving on the Correct Side of the Road
Replies: 8
Views: 1869

Re: Top Gear for People Driving on the Correct Side of the R

Until TGA has the various near-death experiences, it's gonna have to play second fiddle. Driving that Caddy around a dirt course is along those lines. I don't think the History Channel will give it the budget for big international episodes, though. Not unless it becomes a ratings bonanza. I would l...

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