Search found 328 matches

by DanD
Mon Oct 01, 2012 2:45 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1114: "Metallurgy"
Replies: 138
Views: 30533

Re: 1114: "Metallurgy"

With regards to meteorite temperature, they can be cold to the touch immediately after impact. (I am referencing the display at the Chicago Museum of Science and Industry for this). There are two reasons for this. This first is that much of the heat never makes it to the meteor, since it is compress...
by DanD
Fri Sep 28, 2012 4:15 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1114: "Metallurgy"
Replies: 138
Views: 30533

Re: 1114: "Metallurgy"

A nickel iron meteorite represents a decent lump of iron in a relatively concentrated and pure form. Of course its far from what we would consider good iron or steel currently. It is, however, considerably purer than most terrestrial iron ores. If you're just starting to work iron, you're going to b...
by DanD
Fri Aug 10, 2012 11:29 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1093: "Forget"
Replies: 125
Views: 25888

Re: 1093: "Forget"

The Challenger Disaster is the earliest clearly datable memory I have.

Of course I seem to remember a dishwasher my parents swear they got rid of when I was three, but I can't put a real date on that.
by DanD
Wed Aug 01, 2012 2:02 am UTC
Forum: XKCD Meetups
Topic: Dragon*Con meetup?
Replies: 1
Views: 11068

Re: Dragon*Con meetup?

Anyone interested in trying this this year?
by DanD
Wed Aug 01, 2012 1:58 am UTC
Forum: What If?
Topic: What-if 0005: "Robot Apocalypse"
Replies: 65
Views: 57003

Re: What-if 0005: Robot Apocalypse

At the moment, most heavy (industrial) robotic devices have a hardwired e-stop. This wouldn't cover military drones, but it would cover things like industrial robotic fork lifts, which would be the next largest mobile threat. I believe it would also cover EOD robots. The number of autonomous devices...
by DanD
Thu Apr 12, 2012 3:14 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1041: "Whites of Their Eyes"
Replies: 68
Views: 20521

Re: 1041: "Whites of Their Eyes"

As it seems this a revolutionary war battle and the people in the comic are using muskets that bullet in panel 4 shouldn't be elongated and it shouldn't be spinning. Shouldn't it be a sphere traveling in either a fairly straight line (if they are at close range) or a slight arc. The mini ball and t...
by DanD
Mon Apr 02, 2012 1:09 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1037: "Umwelt"
Replies: 478
Views: 313650

Re: 1037(?): Umwelt

Kindle browser gives the snake one. At least for eastern MA.
by DanD
Tue Oct 05, 2010 12:45 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0801: "Golden Hammer"
Replies: 82
Views: 24461

Re: "Golden Hammer" discussion (#801)

Just so everyone's aware, lead hammers are fairly common. They're used as deadblow, non-marring, non-sparking tools. Given lead's toxicity, if gold were cheap enough to stick a couple of kilos worth on the end of a hammer handle instead, it would be, by far, the first choice.

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