Search found 16 matches

by talvinen
Fri Dec 04, 2009 9:56 pm UTC
Forum: Science
Topic: So, how can I violate causality with FTL travel?
Replies: 44
Views: 12648

Re: So, how can I violate causality with FTL travel?

not quite enlightening enough, but I'm trying. I'll add time dilation in the mix. If we accept, that c is the same, regardless of relative movement between sender and receiver, we can deduce time dilation. This one is pretty clear to me. So I've decided to attach a clock to my mirror, a sign saying ...
by talvinen
Fri Dec 04, 2009 8:54 pm UTC
Forum: Science
Topic: So, how can I violate causality with FTL travel?
Replies: 44
Views: 12648

Re: So, how can I violate causality with FTL travel?

The problem is I'm sitting in my space ship in a reference frame in which you appear to have errected your mirror to reflect the beam before the evil alien has even decided to fire it! Which really makes me wonder how the alien firing the beam caused you to build the mirror when according to my vie...
by talvinen
Fri Dec 04, 2009 4:20 pm UTC
Forum: Science
Topic: So, how can I violate causality with FTL travel?
Replies: 44
Views: 12648

So, how can I violate causality with FTL travel?

I read this all the time. Let's say, an alien supervillain is sitting in his spaceship, 10 lightminutes away from the earth, and is firing his laser of doom at us, resulting in a destruction of the earth in.. well, 10 minutes (ignoring movement of the earth around the sun). Now, I have this magic de...
by talvinen
Tue Dec 01, 2009 1:16 pm UTC
Forum: News & Articles
Topic: Mininova Removes Illegal Torrents.
Replies: 221
Views: 16237

Re: Mininova Removes Illegal Torrents.

This chart has been around for a while and was highly debated (and questioned). It shows the distribution of income of a physical CD (left) and a track download (right). In both cases, the profit for the musician is labeled as 4%. I don't have it in english, though. Just look up the words.
by talvinen
Tue Nov 10, 2009 7:43 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 0574: "Swine Flu"
Replies: 166
Views: 39770

Re: "Swine Flu" Discussion

Guys, I found out something terrible!
Randall tried to warn us, but we were too blind to see.
April 27th.
November 10th.
Don't see it?
Today it's 28 WEEKS LATER!
*panics*

Edit: Actually, 28 weeks and 1 day.
by talvinen
Thu Oct 22, 2009 11:17 am UTC
Forum: Science
Topic: Minimum divergence for given lens and light source diameter
Replies: 5
Views: 959

Re: Minimum divergence for given lens and light source diameter

Are you looking for diffraction (which mainly depends on your lens' diameter)? If so, look up Fraunhofer diffraction.
by talvinen
Tue Oct 13, 2009 4:05 pm UTC
Forum: Gaming
Topic: WoWzers!
Replies: 5112
Views: 501491

Re: WoWzers!

also, while high level enchanting (425+) is extremely expensive to train, those enchantments are indeed needed, and you could either offer your skill for free (most people even pay you if they get a skill up when you get an enchant from them) - but that's pretty stupid, honestly - or write down the ...
by talvinen
Tue Oct 13, 2009 12:25 pm UTC
Forum: Gaming
Topic: WoWzers!
Replies: 5112
Views: 501491

Re: WoWzers!

If you want to compare specs/glyphs, google "dk simulator", there is a quite interesting project running at ElitistJerks. It requires some meddling with xml-files though
by talvinen
Wed Oct 07, 2009 1:18 pm UTC
Forum: Science
Topic: An interesting question: Perfect Mirror Ball
Replies: 56
Views: 12950

Re: An interesting question

Just obscure it as a present and get the hell outta there. More on topic: I'd also be interested in why the light would be reflected with another frequency? Doppler effect? The walls do not move (or, if moving the orb around would have an effect, it would be compensated because opposite reflecting w...
by talvinen
Tue Oct 06, 2009 9:28 pm UTC
Forum: Science
Topic: An interesting question: Perfect Mirror Ball
Replies: 56
Views: 12950

Re: An interesting question

While perfectly reflected light wouldn't heat up the boundary of the orb, it would apply pressure to the reflecting walls. Not much, but when you've trapped enough light, the pressure will eventually become to much for whatever material you using. It would be a spectacular view when it goes boom, al...
by talvinen
Wed Sep 23, 2009 9:07 am UTC
Forum: Science
Topic: Intelligent design: Wanting some references.
Replies: 44
Views: 4639

Re: Intelligent design: Wanting some references.

As far as I understood, the Watchmaker analogy is the main argument for IDers, so I'd start with this.
by talvinen
Mon Sep 14, 2009 3:38 pm UTC
Forum: Music
Topic: ITT: Rank Porcupine Tree albums
Replies: 3
Views: 8824

Re: ITT: Rank Porcupine Tree albums

1. Lightbulb Sun - I'm slightly annoyed by Four Chords That Made A Million (though I interprete the monotony of the song as part of the message), but this album contains some of the best songs PT ever recorded. 2. Fear of a Blank Planet - I am also a big Opeth fan, so the fusion of harder and softer...
by talvinen
Mon Aug 17, 2009 1:25 pm UTC
Forum: Logic Puzzles
Topic: The Devil's Quarter Game
Replies: 87
Views: 40034

Re: The Devil's Quarter Game

This reminds me of a game I came across as a kid. It's pretty easy to win actually: Start with any number, say, 21. You and your opponent alternately substract anything from 1 to 5 from this number. The player who substracts the last digit (to or below zero), loses the game. We can easily see that w...
by talvinen
Thu Jul 09, 2009 4:52 pm UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2958
Views: 722944

Re: RELATIVITY QUESTIONS! (and other common queries)

I've got another noob question (and hopefully in the right place): Where does the believe in the randomness of quantum mechanics come from? Everything I've ever read and heard is "yea it's just random", which just doesn't sound to me like something a scientist would agree with, if given th...
by talvinen
Sat May 09, 2009 11:00 am UTC
Forum: Your art and links
Topic: The Eiffel Tower at log scale
Replies: 2
Views: 2796

Re: The Eiffel Tower at log scale

damn! i knew it!
by talvinen
Sat May 09, 2009 1:13 am UTC
Forum: Your art and links
Topic: The Eiffel Tower at log scale
Replies: 2
Views: 2796

The Eiffel Tower at log scale

(As in Height)

This.
left to right - original, log scale, stretched upper 1/3 of the log scale. It's close, but obviously not straight lines. I wonder if an ideally infinite point of view would affect the result :wink:

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