1922: "Interferometry"

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Reka
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1922: "Interferometry"

Postby Reka » Wed Nov 29, 2017 4:56 pm UTC

Image
Title text: It's important to note that while the effective size of the dog can be arbitrarily large, it's not any more of a good dog than the two original dogs.

Definitely needed explainxkcd for this one.

Also, I somehow think even Beret Guy would have trouble doing this with cats.

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Re: 1922: "Interferometry"

Postby somitomi » Wed Nov 29, 2017 5:17 pm UTC

Same here, although I have heard of the concept before.
Reka wrote:Also, I somehow think even Beret Guy would have trouble doing this with cats.

I think the real trouble lies in what happens after your cats start working as a single bobcat.
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Re: 1922: "Interferometry"

Postby squall_line » Wed Nov 29, 2017 5:22 pm UTC

I wonder if Randall will fix the punctuation in the first panel. I'm not sure the word "Interferometry" needs to stand alone as its own sentence...
somitomi wrote:
Reka wrote:Also, I somehow think even Beret Guy would have trouble doing this with cats.

I think the real trouble lies in what happens after your cats start working as a single bobcat.


Well, if the arbitrarily large dog isn't any more of a good dog than the original single dogs, I would hope it would work in the other direction as well. That is, the bobcat shouldn't be any more of a bad cat than the original cats.

Then again, knowing how bad cats can be, you may have a point...

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Re: 1922: "Interferometry"

Postby cellocgw » Wed Nov 29, 2017 6:01 pm UTC

Gotta be an application of this to porn.

2 midgets?
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Re: 1922: "Interferometry"

Postby Pfhorrest » Wed Nov 29, 2017 6:04 pm UTC

cellocgw wrote:Gotta be an application of this to porn.

2 midgets?

Two small penises / four small breasts can be made arbitrarily large by placing them sufficiently far away?
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Re: 1922: "Interferometry"

Postby ucim » Wed Nov 29, 2017 6:25 pm UTC

Reka wrote:Also, I somehow think even Beret Guy would have trouble doing this with cats.
This has to do with the fact that dogs are bozos, and cats are fur meows.

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Re: 1922: "Interferometry"

Postby jc » Wed Nov 29, 2017 7:03 pm UTC

squall_line wrote:I wonder if Randall will fix the punctuation in the first panel. I'm not sure the word "Interferometry" needs to stand alone as its own sentence...


Well, it could if you add a letter to the second sentence:

Interferometry. Its so cool!

(And I just know someone's going to object to that, to. ;-)

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Re: 1922: "Interferometry"

Postby TheEngineer » Wed Nov 29, 2017 7:04 pm UTC

And if a large dog runs into a herd of sheep, several smaller dogs will emerge on the other side (for sufficiently large values of Planck's constant). This effect is known as Beauceron Diffraction.

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Re: 1922: "Interferometry"

Postby cellocgw » Wed Nov 29, 2017 8:42 pm UTC

TheEngineer wrote:And if a large dog runs into a herd of sheep, several smaller dogs will emerge on the other side (for sufficiently large values of Planck's constant). This effect is known as Beauceron Diffraction.


Better that than what happens if a large New Zealander runs into a herd of sheep.
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Re: 1922: "Interferometry"

Postby SBN » Wed Nov 29, 2017 11:17 pm UTC

Reka wrote:Title text: It's important to note that while the effective size of the dog can be arbitrarily large, it's not any more of a good dog than the two original dogs.



How far apart do mine need to be, and how large is the result?

They're all good dogs, Bront. 24/10

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Re: 1922: "Interferometry"

Postby Flumble » Wed Nov 29, 2017 11:42 pm UTC

What about parentheses? If an opening one and a closing one are sufficiently far apart, do they form a really big ellipsis? Or would they cancel each other because of being each others antiparticle? )

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Re: 1922: "Interferometry"

Postby rmsgrey » Wed Nov 29, 2017 11:57 pm UTC

Flumble wrote:What about parentheses? If an opening one and a closing one are sufficiently far apart, do they form a really big ellipsis? Or would they cancel each other because of being each others antiparticle? )

Finally. That's been bugging me ever since 0859.

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Re: 1922: "Interferometry"

Postby gd1 » Thu Nov 30, 2017 2:22 am UTC

In response:
Image
nya

Image
nyeh ha

Image
nye heh
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Re: 1922: "Interferometry"

Postby DavesNotHere » Thu Nov 30, 2017 4:13 am UTC

jc wrote:
squall_line wrote:I wonder if Randall will fix the punctuation in the first panel. I'm not sure the word "Interferometry" needs to stand alone as its own sentence...


Well, it could if you add a letter to the second sentence:

Interferometry. Its so cool!

(And I just know someone's going to object to that, to. ;-)


<grammar_police> That would be "It's"</>

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Re: 1922: "Interferometry"

Postby nixiebunny » Thu Nov 30, 2017 4:15 am UTC

I realize that it's not customary to post something about the content of the comic in the thread about the comic, but I was delighted to wake up this morning and read an XKCD about something that I work on. I build electronics for three radio telescopes that are part of the Event Horizon Telescope, an Earth-sized interferometer that's tasked with observing the black hole at the center of the Milky Way. Our small dogs are on different continents. I'm headed to the South Pole in a couple weeks to upgrade some receiver signal processing equipment that I built for the South Pole Telescope.

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Re: 1922: "Interferometry"

Postby StClair » Thu Nov 30, 2017 7:41 am UTC

And that is how Thor gets a dog (or a cat, or a bird) big enough to ride.

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Re: 1922: "Interferometry"

Postby Eutychus » Thu Nov 30, 2017 9:15 am UTC

rmsgrey wrote:
Flumble wrote:What about parentheses? If an opening one and a closing one are sufficiently far apart, do they form a really big ellipsis? Or would they cancel each other because of being each others antiparticle? )

Finally. That's been bugging me ever since 0859.
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Re: 1922: "Interferometry"

Postby Peaceful Whale » Thu Nov 30, 2017 11:20 am UTC

No! You will not win)
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Re: 1922: "Interferometry"

Postby herbstschweigen » Thu Nov 30, 2017 12:18 pm UTC

This was so beautiful. We need more Beret Guy. In the comic as well as in real life.
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Re: 1922: "Interferometry"

Postby pkcommando » Thu Nov 30, 2017 3:43 pm UTC

DavesNotHere wrote:
jc wrote:
squall_line wrote:I wonder if Randall will fix the punctuation in the first panel. I'm not sure the word "Interferometry" needs to stand alone as its own sentence...


Well, it could if you add a letter to the second sentence:

Interferometry. Its so cool!

(And I just know someone's going to object to that, to. ;-)


<grammar_police> That would be "It's"</>

You missed the to(o).

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Re: 1922: "Interferometry"

Postby pogrmman » Thu Nov 30, 2017 7:09 pm UTC

nixiebunny wrote:I realize that it's not customary to post something about the content of the comic in the thread about the comic, but I was delighted to wake up this morning and read an XKCD about something that I work on. I build electronics for three radio telescopes that are part of the Event Horizon Telescope, an Earth-sized interferometer that's tasked with observing the black hole at the center of the Milky Way. Our small dogs are on different continents. I'm headed to the South Pole in a couple weeks to upgrade some receiver signal processing equipment that I built for the South Pole Telescope.


That’s awesome! I’ve been wondering if you could get anything useful done with pretty short-baseline interferometry (like several hundred meters). It’d be pretty neat to do some radio astronomy, but the dish sizes you need for good resolution are super impractical.

I think I’ve actually heard of that project before — it’s pretty neat. I didn’t realize they had one at the South Pole. (It makes sense as a location for one though).

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Re: 1922: "Interferometry"

Postby erixsparhawk » Thu Dec 07, 2017 12:56 am UTC

The two dogs will have the same angular resolution as a single large dog, but not the same signal-to-nose ratio as the large dog.

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Re: 1922: "Interferometry"

Postby Istaro » Tue Dec 26, 2017 2:41 am UTC

Is three weeks enough for something to be considered a necro? If so, sorry. But I couldn't believe no one had mentioned that this (i.e. the subject matter of the comic) basically happens in A Fire Upon the Deep. I wonder if Randall read or reread it recently.


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