Difference between revisions of "2447: Hammer Incident"

Explain xkcd: It's 'cause you're dumb.
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(the hell is a milliard?)
(Explanation: Remove redundant clause. The mixing surface is actually granite.)
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In addition, the back of JWST's mirrors are made of beryllium due to the light weight, stiffness, and various other mechanical properties of the metal. Beryllium is expensive to purchase, since it is relatively scarce, and is very hard and abrasive, so making things out of it is difficult. Breaking a beryllium mirror would lead to dust formation; single exposures to beryllium dust [http://who.int/ipcs/publications/cicad/en/cicad32.pdf can cause] acute beryllium poisoning and massively increase the risk of lung cancer. In addition to the property damage, Cueball is probably liable for injuring his coworkers.
 
In addition, the back of JWST's mirrors are made of beryllium due to the light weight, stiffness, and various other mechanical properties of the metal. Beryllium is expensive to purchase, since it is relatively scarce, and is very hard and abrasive, so making things out of it is difficult. Breaking a beryllium mirror would lead to dust formation; single exposures to beryllium dust [http://who.int/ipcs/publications/cicad/en/cicad32.pdf can cause] acute beryllium poisoning and massively increase the risk of lung cancer. In addition to the property damage, Cueball is probably liable for injuring his coworkers.
  
The title text refers to the {{w|Cold Stone Creamery}}, a chain that mixes ice cream with various other ingredients, such as fruit or candy, in front of the customer before serving it to the customer. The usual surface for mixing is a piece of metal or marble which is kept cold (about -10°C). It's implied that Cueball had tried mixing his ice cream and flavorings in the style of Cold Stone Creamery on the JWST mirror, which is also kept cold -- in fact much colder, as it's cooled to as low as 7 K (-266°C, or -447°F). If Cueball had mixed ice cream this way on the JWST, he would likely have scratched and/or stained the surfaces on the telescope and perhaps have gotten gunk into the instrumentation, and possibly, due to the localized temperature differential from ice cream hundreds of degrees ''warmer'' than the material, promoted damaging distortions or fractures -- hardly the 'good idea' mentioned in the title text.
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The title text refers to the {{w|Cold Stone Creamery}}, a chain that mixes ice cream with various other ingredients, such as fruit or candy, in front of the customer before serving it. The usual surface for mixing is a piece of granite which is kept cold (about -10°C). It's implied that Cueball had tried mixing his ice cream and flavorings in the style of Cold Stone Creamery on the JWST mirror, which is also kept cold -- in fact much colder, as it's cooled to as low as 7 K (-266°C, or -447°F). If Cueball had mixed ice cream this way on the JWST, he would likely have scratched and/or stained the surfaces on the telescope and perhaps have gotten gunk into the instrumentation, and possibly, due to the localized temperature differential from ice cream hundreds of degrees ''warmer'' than the material, promoted damaging distortions or fractures -- hardly the 'good idea' mentioned in the title text.
  
 
The JWST has previously been mentioned in [[2014: JWST Delays]], [[1730: Starshade]], and [[1461: Payloads]].
 
The JWST has previously been mentioned in [[2014: JWST Delays]], [[1730: Starshade]], and [[1461: Payloads]].

Revision as of 03:26, 9 April 2021

Hammer Incident
I still think the Cold Stone Creamery partnership was a good idea, but I should have asked before doing the first market trials during the cryogenic mirror tests.
Title text: I still think the Cold Stone Creamery partnership was a good idea, but I should have asked before doing the first market trials during the cryogenic mirror tests.

Explanation

Ambox notice.png This explanation may be incomplete or incorrect: Created by: a WAFFLE CONE MIRROR. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.
If you can address this issue, please edit the page! Thanks.

The James Webb Space Telescope (JWST) is a space telescope created to be the successor of the Hubble Space Telescope under construction at time of publishing and expected to launch in October 2021, though in 2014: JWST Delays, xkcd predicted its launch would actually occur during late 2026.

It's implied that Cueball dropped a hammer on the mirror of the JWST and broke it. In superstition, breaking a mirror causes seven years of bad luck. The cost estimate for the JWST is currently US$10 billion, and Cueball is on trial by NASA for breaking this very expensive piece of equipment, no doubt costing NASA (and thus the nation) billions more for repair work. However, Cueball is more concerned about personally experiencing seven years of bad luck.

In actuality the mirror panel is not made of glass, so it's likely that a dropped hammer would dent and distort the panel rather than shattering it. Presumably Cueball's hammer drop would damage or destroy only one mirror panel out of the JWST's eighteen panels. (If he had destroyed the entire telescope, he would have been facing 7×18=126 years of bad luck.) Even breaking a single panel would likely be very expensive because it would require extremely accurate machinery and extensive calibration tests to make and install a replacement panel.

While most mirrors (including telescope mirrors) are coated with silver, mercury, or another reflective gray metal in order to reflect visible light, the designers of the JWST wanted it to be able to view redshifted galaxies, requiring the mirror to reflect infrared light. While silver and most other metals are good at reflecting visible light, they are poor reflectors of infrared light. However, relativistic effects in the electron orbitals of gold shift its spectral range of reflectivity to the longer infrared wavelengths desired for the JWST, and the telescope's mirror surfaces are thus made of gold. However, this gold is not a significant factor in the telescope's overall cost: the amount of gold on all the mirrors, about 48 grams, cost about US$2700 at the current price when this comic appeared -- a tiny fraction of JWST's overall cost.

In addition, the back of JWST's mirrors are made of beryllium due to the light weight, stiffness, and various other mechanical properties of the metal. Beryllium is expensive to purchase, since it is relatively scarce, and is very hard and abrasive, so making things out of it is difficult. Breaking a beryllium mirror would lead to dust formation; single exposures to beryllium dust can cause acute beryllium poisoning and massively increase the risk of lung cancer. In addition to the property damage, Cueball is probably liable for injuring his coworkers.

The title text refers to the Cold Stone Creamery, a chain that mixes ice cream with various other ingredients, such as fruit or candy, in front of the customer before serving it. The usual surface for mixing is a piece of granite which is kept cold (about -10°C). It's implied that Cueball had tried mixing his ice cream and flavorings in the style of Cold Stone Creamery on the JWST mirror, which is also kept cold -- in fact much colder, as it's cooled to as low as 7 K (-266°C, or -447°F). If Cueball had mixed ice cream this way on the JWST, he would likely have scratched and/or stained the surfaces on the telescope and perhaps have gotten gunk into the instrumentation, and possibly, due to the localized temperature differential from ice cream hundreds of degrees warmer than the material, promoted damaging distortions or fractures -- hardly the 'good idea' mentioned in the title text.

The JWST has previously been mentioned in 2014: JWST Delays, 1730: Starshade, and 1461: Payloads.

For some reason, the original version of this comic was very large (4332×4838px), well overflowing the boundaries of the page [1]. This was probably a mistake, as the current version [2] is significantly smaller at 289 × 323px.

Transcript

Ambox notice.png This transcript is incomplete. Please help editing it! Thanks.
[Cueball stands before a seated panel of four people (Ponytail, Hairy, a second Cueball and Hairbun).]
Cueball: Yes, I know you're mad that I dropped that hammer.
Cueball: But think about me—
Cueball: Seven years of bad luck!
[Caption below the panel]:
Man, NASA is really on my case about the James Webb Space Telescope.


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Discussion

big --162.158.187.153 02:04, 8 April 2021 (UTC)

I added a basic explanation. 162.158.212.224 02:28, 8 April 2021 (UTC)

Do we really need a huge paragraph explaining all the reasons why any damage to a space telescope is a big, expensive deal? And I'm not sure this is a trial, it's probably more like an administrative panel hearing (like the hearings after the Challenger disaster). Barmar (talk) 14:26, 8 April 2021 (UTC)

I agree. A hearing fits the lighthearted tone better, the drawing which doesn't look at all like a courtroom, and...well, realism, as irrelevant as that may be for this scenario :) Since nobody has objected to the idea since you posted this, I'll go ahead and change it. - jerodast (talk) 07:06, 4 December 2021 (UTC)

Is it meant to be that size? Does the bad luck apply to trying to upload comics at reasonable sizes?

It's fixed now

172.69.33.19 02:09, 8 April 2021 (UTC)

Oooh boy, indeed... "Error creating thumbnail: File with dimensions greater than 12.5 MP" is the Wiki's assessment of the auto-uploaded image. I haven't checked the resolution, but the https://imgs.xkcd.com/comics/hammer_incident.png one is apparently 4332x4838 (scales to 8% on my device), and I don't care to test the _2x version right now. I'm not sure that was the native res of it on creation, looks to be an accidental up-scaling prior to posting to xkcd itself. 141.101.98.6 02:20, 8 April 2021 (UTC)
The _2x version is actually the proper size for a normal comic - 578x645 pixels. Noëlle (talk) 02:21, 8 April 2021 (UTC)
Still seems larger than normal to me, even the 2x seems larger than I would expect. 172.69.34.78 04:02, 8 April 2021 (UTC)
Maybe the extra-large image is what the original looks like using the James Webb telescope? Maybe over-thinking. 172.68.132.145 04:19, 8 April 2021 (UTC)
Or perhaps its an resolution/aspect ratio/zoom factor difference between it and the old telescope. Implying all other comics have secretly been placed in front of the other telescope 172.69.170.50 04:56, 8 April 2021 (UTC)
Perhaps overthinking, if the main reflecting mirror was actually destroyed, the light entering the telescope would never be focused into the secondary mirror and the image would be "light size" so you would only be able to see a small portion of what you expect
It looks to me that, while most of the text is rendered smoothly in full resolution, the caption below the panel ("Man, NASA is really on my case about the James Webb Space Telescope.") is very jaggy on a pixel level, but only on the Y-axis. There could be quite a bit of information in there. No idea what it means, though. 141.101.77.36 07:29, 8 April 2021 (UTC)
It could be floating-point errors that indicate the code flow of the renderer Randall used. Or it could mean anything else. Curious to compare it to a correct rendering of that text with the same font, but wouldn't know what to do with the vector of edge differences myself. 162.158.63.140 09:03, 8 April 2021 (UTC)


It seems to be fixed now so I am sure it was an accident
Randall has now uploaded an even smaller resolution image of 289 × 323 ([3]), and I have added it to this comic explanation. Natg19 (talk) 17:15, 8 April 2021 (UTC)
Perhaps this should be referred to as the Thumbnail Incident. 172.68.174.26 00:06, 9 April 2021 (UTC)


When I read this comic I was worried it might have been inspired by recent news of something breaking during the final assembly process. Fortunately this seems not to be the case. Among the many delays of the telescope, were any of them caused by mirror and/or cryo failures that might have inspired this comic? Quantum7 (talk) 05:53, 8 April 2021 (UTC)

What caused the most recent delay? It seems it's been pushed forward more as Randall predicted in the other comic. 162.158.63.140 09:03, 8 April 2021 (UTC)
I'm guessing that it was the recent announcement of the planned science for the first year of operation. 162.158.74.21 16:48, 8 April 2021 (UTC)
I was also worried and figured explainxkcd would tell if there had been any real issues. Mikemk (talk) 17:26, 8 April 2021 (UTC)
Cryogenic?

I get the sense that the title text is inspired by liquid nitrogen ice cream. -- 108.162.237.252 13:14, 8 April 2021 (UTC)

The tern Cryogenic is often used to refer to Cryonics. A method of preserving human bodies in glass for future generations 108.162.237.46 20:18, 8 April 2021 (UTC)
Vitrification is not cryonics/cryogenics in itself, just one method of crystal-aversion during freezing (and, it seems, could be just as damaging to the fine biology it tries to preserve), and the cryonic meaning is a subset of a whole range of "making an amorphous solid" processes that are also vitrification, such as in nuclear-waste processing.
Cryogenics is 'the creation/use of extreme coldness' (<120°K) and Cryonics is just one of a subset (via more general cryopreservation) of applications of such technology and processes.
While interesting general knowledge remains interesting, I'm not sure either term is worth having been given such a contextless mention, above, not at all hinted at being deliberately referenced by the comic. 141.101.98.6 18:29, 9 April 2021 (UTC)

As Quantum7, I was worried too and googled "JWST hammer" only to find this actual contributor to the project… The Hammers Company, Inc. Greenbelt, MD in this list:

https://www.jwst.nasa.gov/content/meetTheTeam/team.html

Not all JWST-engineering seams to be that delicate – should we be worried? -- 162.158.203.15 (talk) (please sign your comments with ~~~~)


The James Webb Telescope only has <$2000 of gold. [[4]] -- 172.68.189.191 (talk) (please sign your comments with ~~~~)

Yeah, I'm going to remove the gold thing. It's a complete red herring. The materials represent such a tiny fraction of the cost of coating a mirror that it's not even worth mentioning. Coating a mirror with aluminum or protected silver costs virtually the same as coating it in gold. The fact that the mirrors are made from beryllium is a much larger factor in the cost. Ahecht (talk) 16:37, 8 April 2021 (UTC)
Incidentally, given some of the folk-head-canon for vampiric non-reflections in mirrors is due to the more mystical properties of silver (which crosses over with werewolf-lore, etc, and these days carries over to an inability to be captured on photographic film), imma gonna assume vampires would actually have an image if they looked in the JWST mirror(s). 141.101.98.108 18:58, 8 April 2021 (UTC)
I wouldn't describe the past of using photographic films as "these days". I suppose vampires can be filmed by digital cameras just fine. -- Hkmaly (talk) 22:43, 8 April 2021 (UTC)
Depends. A DigitalSLR might still give various problems. Though unless the Metal Oxide in the MOS element or any of the colour-filtering involved is part silver, as would affect even 'live-view' viewfinding, it wouldn't stop recording of silver-inhibited imagery.
(It makes you wonder if a part-silvered USB connector would be enough to make files of successfully recorded vampire activity to be automagically refiltered to show an 'empty' scene. In fact, if such a connector is rare enough, but can be invoked, it suggests a form of steganography in which you send 'innocent' images of a cooperative vampire directly standing in front of the secret information, in a suitably social context as to raise no suspicions. Only if you save the public image from Facebook (or OnlyFan(g)s??) then transfer it through your specially-silvered silver USB cable, the copy now shows you the mystically-'unobscured' pixels of the secret info. Right? Because magic can get around trivial stuff like bitplane (re)compression, smooth out any copy-verification/hashing mismatches, and otherwise prevent mugglishly-mundane issues from arising, obviously!) 141.101.98.6 18:29, 9 April 2021 (UTC)

Would it count as bad luck if he has to pay for all the repairs to his damage of the space telescope? Nutster (talk) 03:10, 9 April 2021 (UTC)

Would have been funnier if it was 126 years of bad luck. DrBob (talk) 12:56, 9 April 2021 (UTC)

There probably should be a category for "review boards" or something, since there's now this comic strip, 2349: Rabbit Introduction, and 2148: Cubesat Launch (at least). --NotaBene (talk) 15:15, 9 April 2021 (UTC)

I just want to congratulate whomever added that [citation needed] after the comment about human lives. That is easily the funniest use of it that I've seen in a very long time if not ever. Cwallenpoole (talk) 14:24, 15 April 2021 (UTC)