Search found 622 matches

by keithl
Tue Mar 20, 2018 12:34 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1969: "Not Available"
Replies: 38
Views: 3881

Re: 1969: "Not Available"

Please help. I'm from Canada. I tried opening the comic with an US Proxy, and it still shows "This content is not available in this country". Try a proxy in Kazakhstan. The content is available there. The proxies there are DNS poisoned to go to a malware host instead. You need to use eith...
by keithl
Mon Mar 19, 2018 10:12 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1969: "Not Available"
Replies: 38
Views: 3881

Re: 1969: "Not Available"

jeanrenaud wrote:Please help. I'm from Canada. I tried opening the comic with an US Proxy, and it still shows "This content is not available in this country".

Try a proxy in Kazakhstan. The content is available there.
by keithl
Mon Mar 19, 2018 8:51 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1969: "Not Available"
Replies: 38
Views: 3881

Re: 1969: "Not Available"

I just wasted 10 minutes relearning how to put an ErrorDocument stanza in /etc/httpd/conf/httpd.conf on my server. http://keithl.com/x ... where x => any of a semi-infinite number of pages that I have not implemented. The downside is that the webspiders will hammer my site with requests for every po...
by keithl
Sat Mar 03, 2018 6:25 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1962: “Generations”
Replies: 31
Views: 3679

Re: 1962: “Generations”

Sigh. I was looking forward to "... to 1865, Spontaneous Generation".
by keithl
Fri Feb 09, 2018 7:08 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1953: "The History of Unicode"
Replies: 60
Views: 6721

Re: 1953: "The History of Unicode"

In June 2017: 136,755 unicode symbols, up from 128,237 in 2016. At a linear rate of expansion, there will be more than 8 trillion unicode symbols a billion years from now, as the Sun heats the Earth beyond survivability. In that same time, the round-trip speed-of-light communication sphere will have...
by keithl
Wed Feb 07, 2018 6:13 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1952: "Backpack Decisions"
Replies: 37
Views: 3776

Re: 1952: "Backpack Decisions"

Why are most backpacks black? I would like something very much like my ancient Targus (durable, lots of pockets, black :( ) in yellow or orange with wide scotchlite strips. I walk outside at night, and I want to outshine a driver's dodopaddle (er, "smartphone") screen. Yes, I have a firema...
by keithl
Mon Feb 05, 2018 6:59 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1951: "Super Bowl Watch Party"
Replies: 23
Views: 3977

Re: 1951: "Super Bowl Watch Party"

Years ago, I was in San Jose on the day of the Super Bowl, and went on a hike in the hills with two dozen geeks. Our leader, Brad T., had jury-rigged a digital video recorder (before there were commercial products that did this) and was capturing the whole show on hard disk. But we weren't intereste...
by keithl
Wed Jan 24, 2018 6:32 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1946: "Hawaii"
Replies: 28
Views: 3682

Re: 1946: "Hawaii"

I'm surprised that in 2018, the "something we know" part of the security triad is still a string of ascii characters,which "ought to" change frequently and be different on every device. The problem isn't that users are stupid, it is that the inmates are running the asylum . The &...
by keithl
Fri Jan 19, 2018 7:26 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1944: "The End of the Rainbow"
Replies: 48
Views: 4830

Re: 1944: "The End of the Rainbow"

Million, billion, milliard, short scale, long scale ... feh. Use scientific notation, with e/E separating the exponent so we don't need to use superscripts. Not as difficult as lakh ( 1e5 or 100,000 ) and crore ( 1e7 or 100,00,000 ) common in India and south Asia; and yes, they do write the commas i...
by keithl
Fri Jan 19, 2018 7:04 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1944: "The End of the Rainbow"
Replies: 48
Views: 4830

Re: 1944: "The End of the Rainbow"

I found the gold fraction of the Sun in Anders and Ebihara, "Solar-system abundances of the elements", Geochimica et Cosmochimica Acta, 1982. That compares relative counts of atoms, and lumps deuterium and tritium in with hydrogen, so my 1e18 tonne estimate is imprecise, assuming H = 1.0 a...
by keithl
Fri Jan 19, 2018 7:42 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1944: "The End of the Rainbow"
Replies: 48
Views: 4830

Re: 1944: "The End of the Rainbow"

A sextillion tons of gold. You could bankrupt every country on Earth a million times over by dumping that amount into the economy. A mere quintillion (1e18) tonnes - gold comprises about 5e-10 of the Sun by mass, and the mass of the Sun is 2e30 kilograms, thus the mass of gold is 1e21 kg, or 1e18 t...
by keithl
Fri Dec 29, 2017 9:11 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1935: "2018"
Replies: 66
Views: 5873

Re: 1935: "2018"

2018 is not divisible by ANY of the first 49 Mersenne primes. But how about the larger ones? We will probably have to try all of them, just to make sure that 2018 is cryptologically secure.
by keithl
Fri Dec 01, 2017 9:00 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1923: "Felsius"
Replies: 78
Views: 6604

Re: 1923: "Felsius"

Melting point and boiling point of ... water? Those temperatures are only "standard" at 101 kPascal (one "standard" atmosphere of dry nitrogen/oxygen). At very high or very low pressures, where 99.99% of the water in the solar system can be found, the temperatures are different. ...
by keithl
Fri Dec 01, 2017 8:46 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1923: "Felsius"
Replies: 78
Views: 6604

Re: 1923: "Felsius"

Planck units. The Planck temperature is 1.4168e32K, also known as an "absolute hotness" of 1.0. That way, if anyone asks you the temperature, you can say "close to zero" and be right every time - even if you are at the core of an exploding supernova. Added note: It is about 2 mic...
by keithl
Wed Nov 15, 2017 8:53 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1916: "Temperature Preferences"
Replies: 82
Views: 7905

Re: 1916: "Temperature Preferences"

... Minnesotans are tough. Or dumb. Both, really. How did anyone get tricked into living here in the first place? Anecdotally, by telling new immigrants that it lies at the same latitudes as places like Venice and Paris... Two of my great-grandparents were "probably" imported from Finland...
by keithl
Wed Nov 15, 2017 8:02 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1916: "Temperature Preferences"
Replies: 82
Views: 7905

Re: 1916: "Temperature Preferences"

The Moon should be on this chart; equatorial surface temperatures range from 127C to -173C over the one month "day". On the chart, way beyond the lower right, somewhere near the middle button of your right-hand-side mouse. Fortunately for visitors, it is a very dry heat, with no snowstorms...
by keithl
Mon Nov 13, 2017 6:56 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1915: "Nightmare Email Feature"
Replies: 20
Views: 3006

Re: 1915: "Nightmare Email Feature"

Longest delayed email reply? That's gotta be "What Hath God Wrought", the first long distance telegraph message from Washington DC to Baltimore in 1844. They have yet to receive a satisfactory reply. The reply I would send would be so controversial that this thread would run longer than &q...
by keithl
Fri Oct 20, 2017 5:53 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1905: "Cast Iron Pan"
Replies: 108
Views: 10849

Re: 1905: Cast Iron Pan

I used to filings-season my cast iron pans at the poles, but the magnetic field is too strong there; the residual magnetism in the pan ruined my best dishes. Now ESA launches them out of the Guiana Space Center for me. The field at 5 degrees north is still substantial, but a high parabolic trajector...
by keithl
Mon Oct 09, 2017 8:45 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1900: "Jet Lag"
Replies: 29
Views: 3726

Re: 1900: "Jet Lag"

I prefer random maritime disasters to scheduled maritime disasters, though the latter can be easier to avoid.
by keithl
Mon Oct 02, 2017 11:44 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1897: "Self Driving"
Replies: 57
Views: 8097

Re: 1897: "Self Driving"

Pssshht, pliers are so pro-ish noob. The real noobs strip wires with a pair of scissors or their teeth. Blimey, I'd forgotten about teeth. That was my preferred method for years. Did you stop when you were down to two teeth, or could you strip wire with the jagged remaining single tooth? edit: Seco...
by keithl
Mon Oct 02, 2017 4:52 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1897: "Self Driving"
Replies: 57
Views: 8097

Re: 1897: "Self Driving"

Self-driving cars? That's nothing. Microsoft just invented the self-flattening pedestrian. Shaped-charge exploding batteries in the Windows phone, ignited when a Google car passes closely. The phone appears undamaged. The results look just like vehicular homicide. See you in court, Page and Brin!
by keithl
Fri Sep 01, 2017 4:49 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1884: "Ringer Volume/Media Volume"
Replies: 38
Views: 5736

Re: 1884: "Ringer Volume/Media Volume"

Is it just me or does it seem that Google engineers just don't care about sane audio controls? The controls work great for Google's paying customers, the companies that pay to bombard you with advertisements. You (and the hapless people around you) are the product that Google delivers to advertiser...
by keithl
Wed Aug 23, 2017 4:02 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1880: "Eclipse Review"
Replies: 51
Views: 6249

Re: 1880: "Eclipse Review"

I watched it with 30 friends in Idaho Falls. Have you ever heard the rumble of a whole city cheering? Punctuated with police sirens; the cops were cheering, too. The familiar Sun is replaced with a strange new object in the sky: a vast corona. Venus is brighter than you have EVER seen it, seemingly ...
by keithl
Wed Aug 23, 2017 3:45 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1880: "Eclipse Review"
Replies: 51
Views: 6249

Re: 1880: "Eclipse Review"

Predicting supernovas How predictable is a supernova? I know that we can't currently predict them from the Earth, but if we were to send probes to a distant star, could those probes tell us when it was going to go supernova? The neutrino flux from a supernova goes off the charts in the hours before...
by keithl
Fri Jul 28, 2017 6:26 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1868: "Eclipse Flights"
Replies: 31
Views: 4242

Re: 1868: "Eclipse Flights"

There is no abrupt edge of a shadow as depicted. The eclipse begins an hour before, with the blockage of the Sun increasing towards totality, then decreasing for an hour after. In a vastly broader swath to the north or south of the path of totality, where the Moon "misses" the Sun a bit, ...
by keithl
Wed Jul 26, 2017 7:07 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1868: "Eclipse Flights"
Replies: 31
Views: 4242

Re: 1868: "Eclipse Flights"

Er ... uh ... There is no abrupt edge of a shadow as depicted. The eclipse begins an hour before, with the blockage of the Sun increasing towards totality, then decreasing for an hour after. In a vastly broader swath to the north or south of the path of totality, where the Moon "misses" th...
by keithl
Mon Apr 17, 2017 3:26 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1825: "7 Eleven"
Replies: 85
Views: 17672

Re: 1825: "7 Eleven"

They need 37 minutes per day to replace all the freeze dried and vacuum dessicated fruits and vegetables.

Oh, wait. 7/11 doesn't have any fruits and vegetables. Maybe they can sell silica gel packs instead. Yum!
by keithl
Fri Mar 31, 2017 9:41 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1818: "Rayleigh Scattering"
Replies: 99
Views: 19593

Re: 1818: "Rayleigh Scattering"

Regarding why plants and chlorophyll are green (ultimate, not proximate cause): Plants use the "green" pigment chlorophyll to process light because the first eukaryotic cells with chloroplasts evolved in the ocean, at depths where green light does not penetrate. Broader spectrum pigments m...
by keithl
Mon Mar 20, 2017 6:20 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1813: "Vomiting Emoji"
Replies: 45
Views: 9567

Re: 1813: "Vomiting Emoji"

Re: xkcd cartoons about emoji and vomiting ...
Image
by keithl
Wed Feb 15, 2017 6:53 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1799: "Bad Map Projection: Time Zones"
Replies: 70
Views: 11208

Re: 1799: "Bad Map Projection: Time Zones"

Greenland is stretched funny, probably because they get so little sun that its position in the sky (or below the southern horizon) has no bearing (ahem) on their schedules, while economic dealings with Europe do. Reforming this mess provides a great opportunity for regional defense. Greenlanders can...
by keithl
Wed Feb 01, 2017 7:53 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1793: "Soda Sugar Comparisons"
Replies: 132
Views: 20841

Re: 1793: "Soda Sugar Comparisons"

A 20 ounce "classic Coke" is 240 food calories, and a food calorie is 4184J, which is also the energy in a gram of TNT. So, three years of one soda per day is the energy equivalent of 263 kilograms of TNT. A soda per day for 170 thousand years is the energy equivalent of the 15KT Hiroshima...
by keithl
Wed Jan 18, 2017 7:07 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1787: "Voice Commands"
Replies: 54
Views: 10918

Re: 1787: "Voice Commands"

When I first looked at this forum page, there was no translation, so I found this webpage for translating Dvorak: http://wbic16.xedoloh.com/dvorak.html, and got the "ok google send a text" after translation. However, this is not properly secure. In the grand tradition of triple rot 13 , it...
by keithl
Wed Dec 21, 2016 11:03 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1775: "Things You Learn"
Replies: 47
Views: 9445

Re: 1775: Things You Learn

Cat bites are very dangerous vectors of infection, especially for cartoonists. If the cat that bit Randall had previously bitten Jeff Keane, Randall would be drawing Family Circus cartoons now, and we would all be screaming and clawing our eyes out. Fortunately, he received prompt professional care.
by keithl
Tue Nov 08, 2016 4:51 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1756: "I'm With Her"
Replies: 446
Views: 77802

Re: 1756: "I'm With Her"

Don't waste your vote!
Give it to the Republicans and Democrats to waste for you!
by keithl
Tue Nov 01, 2016 11:40 pm UTC
Forum: What If?
Topic: What-If 0152: "Flood Death Valley"
Replies: 43
Views: 18516

Re: What-If 0152: "Flood Death Valley"

I interpreted it (knowing that I wouldn't be quite right) as The Great Lord Randall, from context. But it's probably an ETLA that has been used in/inspired by the full text in Time or the 'secret' subforus, that I've not read. You're doing this on purpose, aren't you? Possibly, but that one's prett...
by keithl
Sat Oct 22, 2016 10:00 pm UTC
Forum: What If?
Topic: What-If 0152: "Flood Death Valley"
Replies: 43
Views: 18516

Re: What-If 0152: "Flood Death Valley"

Ah, right. Still, I don't think steam would bubble out of the surface of the ocean, for the same reason it already doesn't above thermal vents. (The pressure is too high for it to be gaseous, plus the water around it would carry away heat pretty effectively.) gmalivuk would be correct for a small h...
by keithl
Fri Oct 21, 2016 6:02 am UTC
Forum: What If?
Topic: What-If 0152: "Flood Death Valley"
Replies: 43
Views: 18516

Re: What-If 0152: "Flood Death Valley"

Oh, come now. You call that a What-If? The question was " ... could we dig a hole to the ocean ... ". Not a ditch, canal ... I guess TGLR was so distracted by temperature records that he neglected to answer the actual question. About a hole. Even a tunnel barely qualifies as a hole, and ce...
by keithl
Fri Sep 02, 2016 5:06 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1728: "Cron Mail"
Replies: 21
Views: 6828

Re: 1782: "Cron Mail"

Randall wants more efficient tools to manage cron output, and hopes to get useful suggestions from this forum. So do I. Sysadmin gurus, start explaining! Alt explanation 1: Since the "explainxkcd.com" page for this comic is also difficult to understand, Randall is hoping this comic will mo...
by keithl
Fri Aug 26, 2016 10:55 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1725: "Linear Regression"
Replies: 27
Views: 7367

Re: 1725: "Linear Regression"

Physicists are not immune, especially if they offset 3 sigma results with the logarithm of the megaeuros spent acquiring them, or of the hundreds of papers written about them. FYI, after six more months of intense data gathering, delaying data taking for other scheduled projects at LHC, the 750 GeV ...
by keithl
Mon Aug 22, 2016 6:55 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1723: "Meteorite Identification"
Replies: 30
Views: 8091

Re: 1723: "Meteorite Identification"

I've seen many meteors fall (I go camping during meteorite showers), but I've never found a meteorite. About a decade ago, I saw an extremely bright meteor east of Portland, Oregon, early in the morning on the way to the airport. Someone else at the airport had seen the same meteor a few miles up th...

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