explain xkcd - User contributions [en]

Talk:1643: Degrees

2021-07-21T14:44:41Z

108.162.219.156:

Rankine is a good compromise. [[Special:Contributions/173.245.56.65|173.245.56.65]] 14:11, 15 February 2016 (UTC)

0.173 rad = 10°. Now it could be 10°C (50°F) or 10°F (-12°C).--[[Special:Contributions/108.162.228.113|108.162.228.113]] 14:14, 15 February 2016 (UTC)

It should probably be noted that since 0.173 radians is equal to around 9.91 degrees, the temperature that Cueball gave is likely in 'radians Celsius', since 9.91 degrees Farenheit would be an unlikely temperature to occur, unless they're somewhere like Canada or northern Russia --[[Special:Contributions/162.158.152.59|162.158.152.59]] 14:17, 15 February 2016 (UTC)
:It would appear that that's already been noted since I started writing that comment. Ignore me. --[[Special:Contributions/162.158.152.59|162.158.152.59]] 14:18, 15 February 2016 (UTC)
::It would appear you're not in New England. Temperature last night -14°F = -26°C = -0.244 rad F = -0.556 rad C. But others have noted this as well. [[User:Bob Stein - VisiBone|Bob Stein - VisiBone]] ([[User talk:Bob Stein - VisiBone|talk]]) 23:41, 15 February 2016 (UTC)
:::Even Manhattan, New York reached [http://www.wunderground.com/history/airport/KNYC/2016/2/14/DailyHistory.html -0.9°F] on Sunday, the first time it's been [http://www.weather.gov/media/okx/Climate/CentralPark/Below0DegreeDays.pdf below 0°F] there in a generation. We came within [http://www.weather.gov/media/okx/Climate/CentralPark/BiggestSnowstorms.pdf 1 part in 269] of tying the 2006 record for biggest snowstorm 3 weeks before this, broke the record for latest frost by 12 days with bitter cold 3 weeks before that, had cherry blossoms suicidally bloom on Christmas 10 days before that (because they thought it's spring) and that whole month was twice as many degrees above [http://www.weather.gov/media/okx/Climate/CentralPark/nycnormals.pdf normal] as the [http://www.weather.gov/media/okx/Climate/CentralPark/warmcoldmonths.pdf previous record warmest December]. We also broke the record for warmest November and September a few months ago. This is called [https://en.wikipedia.org/wiki/global_weirding global weirding.] (the more accurate name for global warming) [[Special:Contributions/199.27.129.11|199.27.129.11]] 04:28, 16 February 2016 (UTC)

Guys, we moved away from the Réaumur-scale: You can do the same for the Fahrenheit :-). --[[User:DaB.|DaB.]] ([[User talk:DaB.|talk]]) 14:20, 15 February 2016 (UTC)
: And we all moved away from the Rømer scale (what Reumer and Fahrenheit were both based on), 0F is 0Rø, 100C/80Reu is 80Rø). We even moved from the 100C-0C to 0C-100C since Celsius was a (half) crazy Swedish scientist who thought Reumer made sense if it was based on 100 instead of 80, and 100 was the freezing point (everybody ignores the second part of his scale).[[Special:Contributions/162.158.114.222|162.158.114.222]] 17:07, 15 February 2016 (UTC)
:: {{w|Ole_Rømer|Rømer}} was {{w|Danish}} -- Calling him Sweedish is an insult -- kind if the same insult as calling Cruz Canadian [[User:Spongebog|Spongebog]] ([[User talk:Spongebog|talk]]) 17:14, 15 February 2016 (UTC)
:::Then it was great that it was Celsius who was called a ''crazy Swedish scientist'' above, (and he was Swedish). Rømer is luckily more known for making the first quantitative measurements of the speed of light and not for his failed temperature scale. (I'm from Denmark and like the light part: He measured the hesitation of light ;-) --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 21:31, 15 February 2016 (UTC)

I'm pretty sure the only people who could possibly find "Fahrenheit" easier to spell than "Celsius" are those whose first written language was German. [[User:Promethean|Promethean]] ([[User talk:Promethean|talk]]) 01:31, 17 February 2016 (UTC)

Considering how cold New England is today, I'm pretty sure it's Fahrenheit. {{unsigned ip|108.162.218.71}}

Temperature is given in F. Look at which month it is. And how this is a darn cold winter (at least in Canada). [[Special:Contributions/108.162.216.43|108.162.216.43]] 14:32, 15 February 2016 (UTC)
: its currently 10F in the Boston area where Randall lives.
:: For people from the future, see [https://www.wunderground.com/history/airport/KBOS/2016/2/15/DailyHistory.html?req_city=Somerville&req_state=MA&reqdb.zip=02143&reqdb.magic=1&reqdb.wmo=99999 this historical data page for the day the comic was released] --[[Special:Contributions/108.162.214.59|108.162.214.59]] 19:00, 15 February 2016 (UTC)
::: Thanks, 108.162.214.59 and others! At that time of year, ''either'' temperature would be possible in Boston, Massachusetts -- 10°F (-12°C) during a cold night or a strong cold snap; 10°C (50°F) during a midwinter thaw. --[[User:Aaron of Mpls|Aaron of Mpls]] ([[User talk:Aaron of Mpls|talk]]) 01:19, 19 July 2020 (UTC)

What's with the "We lost a Mars probe over this" remark? [[Special:Contributions/141.101.104.113|141.101.104.113]] 14:33, 15 February 2016 (UTC)
: One of the Mars probes crashed into Mars because one of the NASA contractors was using US Customary units instead of SI units. [[User:Blaisepascal|Blaisepascal]] ([[User talk:Blaisepascal|talk]]) 14:39, 15 February 2016 (UTC)
:: Is there a reference for this ?? [[User:Spongebog|Spongebog]] ([[User talk:Spongebog|talk]]) 17:17, 15 February 2016 (UTC)
::: It was the Mars Climate Orbiter, it crashed in 1999 because software supplied by Lockheed Martin produced results in US customary units even though the specs called for metrics units. https://en.wikipedia.org/wiki/Mars_Climate_Orbiter [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 22:04, 15 February 2016 (UTC)

:The mars probe remark is in reference to a mistake in switching navigational numbers from American standard to metric (namely in that they didn't) which caused the probe to slam into the surface of mars. If I remember correctly that is.[[Special:Contributions/108.162.238.78|108.162.238.78]] 14:43, 15 February 2016 (UTC)
:: I remember when this happened, thinking "OK, Lockheed, time to get out your checkbook and cough up the entire cost of that probe and launch," though I expect their bought-and-paid-for pet legislators made sure that didn't happen. [[User:Miamiclay|Miamiclay]] ([[User talk:Miamiclay|talk]]) 21:23, 16 February 2016 (UTC)

I used to think that physicists prefer Kelvin, which is of course sort of based on Celsius. [[User:Jkrstrt|Jkrstrt]] ([[User talk:Jkrstrt|talk]]) 15:28, 15 February 2016 (UTC)
:If you're measuring a temperature ''difference'', which I think is a far more common thing than an absolute temperature, then the two are completely interchangeable. [[Special:Contributions/108.162.219.186|108.162.219.186]] 14:41, 21 July 2021 (UTC)

If he used Radians Fahrenheit, then 1 would be very close to earth's historical mean temperature for the period 1951 to 1980. [[Special:Contributions/173.245.55.64|173.245.55.64]] 16:19, 15 February 2016 (UTC)
: That sounds like it could almost be useful.... What is the temperature on the surface on the sun in Radians ? [[User:Spongebog|Spongebog]] ([[User talk:Spongebog|talk]]) 17:20, 15 February 2016 (UTC)
:: 96.08 [https://www.google.com/search?q=5505+degrees+in+radians radians] [https://www.google.com/search?q=temperature+of+surface+of+sun+in+degrees+Celsius Celsius], or 173.5 [https://www.google.com/search?q=9941+degrees+in+radians radians] [https://www.google.com/search?q=temperature+of+surface+of+sun+in+degrees+Fahrenheit Fahrenheit]. --[[Special:Contributions/108.162.214.59|108.162.214.59]] 19:00, 15 February 2016 (UTC)

"Easier to spell"? When editing, I had to correct myself from "Celcius" to "Celsius". I never get Fahrenheit wrong! [[User:Cosmogoblin|Cosmogoblin]] ([[User talk:Cosmogoblin|talk]]) 20:55, 15 February 2016 (UTC)

Can someone explain to me why Fahrenheit's scale is so much more popular across the Atlantic than in his home <s>city</s> <s>country</s> continent? [[Special:Contributions/162.158.102.219|162.158.102.219]] 21:37, 15 February 2016 (UTC)
:Same reason that the British used it. It was there. Unlike the Brits the US just never got around to change it [[User:Spongebog|Spongebog]] ([[User talk:Spongebog|talk]]) 02:18, 16 February 2016 (UTC)
:: As a Brit. I love it that the US was at one point the last bastion of the BTU (British Thermal Unit), I still see 17th century measures in some farming contexts - bushels though I think we both still agree that "Acres" are a much better measure area than the soul-destroying "hectare". :) [[Special:Contributions/162.158.34.147|162.158.34.147]] 08:22, 16 February 2016 (UTC)

Not being an instinctive science type, and on a tiny screen, I initially read the comic as "51 prefixes," and thought to myself "I could probably get from peta- to pico- in my head, but there are really 51 of those?" [[User:Miamiclay|Miamiclay]] ([[User talk:Miamiclay|talk]]) 02:46, 16 February 2016 (UTC)

Maybe one should include the explanation why both angles and temperature use the term "degree". "Degree" in measurement means, that the definition comes from a partition of a known interval. For angles, that is "a full circle is 360 degrees" and for temperature in Celsius that is "100°C is the range from freezing to boiling water". That is historical, because modern SI units are defined in terms of partitions as well.[[Special:Contributions/162.158.90.163|162.158.90.163]] 10:23, 16 February 2016 (UTC)
: I'm not a linguist, but I think that it to a certain degree (!) just means "partial", "part" or "step" -- I can agree with you partially by which I will agree with you to a degree -- any scale can in a similar degree be broken up where each part is a degree closer to the full outcome -- so in Temperature a degree is a step toward boiling, and your Masters degree is a step beyond your Bachelor towards your Doctoral degree -- in short it is to some degree just a duhdah word representing nothing but makes it easier to form a sentence around an abstract concept [[Special:Contributions/162.158.255.109|162.158.255.109]] 20:28, 16 February 2016 (UTC)

talking about weird us customs/units i think the way trailers and such specify release dates by season is terrible. 1. there are 2 hemispheres 2. internationally seasons may vary and it is rarely specified if its north or south seasons [[Special:Contributions/162.158.177.185|162.158.177.185]] 06:37, 17 February 2016 (UTC)

Personally, I like to give temperature in meV/particle [[User:Edo|Edo]] ([[User talk:Edo|talk]]) 14:29, 17 February 2016 (UTC)
: Do you mean MeV per non-frozen degree of freedom? The nitrogen in room-temperature air carries five-sixths the MeV/atom as argon in the same air at the same temperature. [[Special:Contributions/108.162.216.9|108.162.216.9]] 00:21, 18 February 2016 (UTC)
: So he should have said 22.48 meV. I also prefer that as temperature shouldn't really a "base unit"

Haha, "degree of correlation". Nice. [[Special:Contributions/162.158.58.9|162.158.58.9]] 10:34, 27 December 2016 (UTC)

Wouldn't a physics major be more likely to be loyal to the Kelvin scale than to Celsius? Heck, even the Rankine scale is more scientific than celsius; it's by far the least popular of the four, but it's still more scientific than celsius due to the fact that it starts at absolute zero like Kelvin does

Another "benefit" for Fahrenheit is that it is more precise. That is, each change in degree Fahrenheit is a smaller change in temperature, so you can be a bit more precise without needing to add digits after a decimal point. I also find it noteworthy that there are 180 degrees (Fahrenheit) between freezing and boiling. [https://en.wikipedia.org/wiki/Fahrenheit#History This is not coincidence], but was explicitly decided by a committee in 1776. Clearly, the choice of 180 degrees is related to a half-circle, so it almost makes sense to talk about "radians Fahrenheit", where the difference between boiling and freezing is pi. [[User:Shamino|Shamino]] ([[User talk:Shamino|talk]]) 14:03, 3 June 2020 (UTC)

When talking about US Customary versus Imperial units, is it worth mentioning that the US units are similar to the English units that were used in Britain before the Imperial system was introduced in 1824? US units mirrored British units of the late 18th century, but they didn't change in 1824 because they were already independent by that time. [[Special:Contributions/108.162.219.156|108.162.219.156]] 14:44, 21 July 2021 (UTC)

Talk:2467: Wikipedia Caltrops

2021-05-25T16:37:01Z

108.162.219.156:

seems more like flares (which distract) than caltrops (which physically impair) to me. [[Special:Contributions/162.158.222.122|162.158.222.122]] 16:31, 24 May 2021 (UTC)

I'd say "Well, I now know what I'm doing for the next few hours!", except that I suspect that this isn't even going to be the half of it... [[Special:Contributions/141.101.98.46|141.101.98.46]] 16:37, 24 May 2021 (UTC)
::👍 [[User:OhFFS|OhFFS]] ([[User talk:OhFFS|talk]]) 21:45, 24 May 2021 (UTC)

except 'caltrops' is a funnier word than 'flares' and we get the gist anyway. [[Special:Contributions/108.162.237.4|108.162.237.4]] 17:23, 24 May 2021 (UTC)

no WAY randall is a jon bois fan
[[Special:Contributions/173.245.52.175|173.245.52.175]] 17:38, 24 May 2021 (UTC)

Flares draw fire to prevent missiles from reaching their target. Caltrops impede the actual motion of the vehicle. If the links are as distracting as Randall implies, I think his choice makes sense!
[[Special:Contributions/108.162.215.92|108.162.215.92]] 00:34, 25 May 2021 (UTC)

Flares do " draw fire" but because they are more visible to heat seakeking missiles than engine jet engine heat. This seems like a solvable problem, missile and flare wise.[[Special:Contributions/162.158.75.202|162.158.75.202]] 03:44, 25 May 2021 (UTC)

Shouldn't the links be given as QR codes rather than plain text, which would have to be read and re-typed into a device with a suitable web browser? [[Special:Contributions/108.162.219.28|108.162.219.28]] 00:54, 25 May 2021 (UTC)
:Having to type the URL would be more distracting to driver of the car behind? And it's not like it is exactly easy to aim your phone camera to and read the QR code on a flying banner from the car in front of you, in addition to using smartphone mean traffic law violation. And text in URL also spoiler the link content a bit to invite interest. [[Special:Contributions/172.70.49.196|172.70.49.196]] 02:45, 25 May 2021 (UTC)
:QR codes for urls are more a marketing ploy. The usage for typing urls into a webbrowser can be as easily done by an OCR algorithm on the camera image. Sebastian --[[Special:Contributions/172.68.110.118|172.68.110.118]] 12:02, 25 May 2021 (UTC)
:Plain text (if it contains interesting words) will catch the driver's attention. QR codes are easy to ignore.

It looks like "List of Fictional Colors" [https://web.archive.org/web/20200720071214/https://en.wikipedia.org/wiki/List_of_fictional_colors used to exist] but was deleted [https://web.archive.org/web/20200731090020/https://en.wikipedia.org/wiki/List_of_fictional_colors late July 2020] [[Special:Contributions/172.69.33.119|172.69.33.119]] 04:11, 25 May 2021 (UTC)

I have nothing useful to add but wanted to point out that "as easily distracted as me." is grammatically incorrect - it should instead be "as easily distracted as I." [[Special:Contributions/172.70.100.54|172.70.100.54]] 13:25, 25 May 2021 (UTC)

Talk:511: Sleet

2015-08-26T09:25:06Z

108.162.219.156: Dean Martin's lyrics

What is sleet in Randall's dialect? Ice pellets or a mixture of rain and snow? [[Special:Contributions/141.101.98.55|141.101.98.55]] 18:05, 17 August 2014 (UTC)
:What does this matter? I would call it frozen rain. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 21:09, 17 August 2014 (UTC)
::I removed the requirement of a definition of sleet from the incomplete tag. Sleet is understood to be cold horrible weather to be out in, whichever regional definition is used. I dont believe that the explanation would improve in quality by guessing the interpretation that Randall would subscribe to.--[[User:Pudder|Pudder]] ([[User talk:Pudder|talk]]) 14:07, 1 September 2014 (UTC)

This is not vital, but I'm surprised no one has mentioned that the first panel quotes the first line of "Let It Snow," famously sung by Dean Martin. To me, hearing his mellow voice in my mind's ear more intensely evokes the loving scene that has been spoiled by the boyfriend's non-romantic preoccupation. Must be a generational thing, since I'm likely twice the age of most commenters![[Special:Contributions/108.162.219.156|108.162.219.156]] 09:25, 26 August 2015 (UTC)

1531: The BDLPSWDKS Effect

2015-05-29T13:19:34Z

108.162.219.156: /* Explanation */

{{comic
| number = 1531
| date = May 29, 2015
| title = The BDLPSWDKS Effect
| image = the bdlpswdks effect.png
| titletext = This well-known effect has of course been replicated in countless experiments.
}}

==Explanation==
{{incomplete|New page}}
BDLPSWDKS is an acronym for Bernoulli Doppler Leidenfrost Peltzman Sapir Whorf Dunning Kruger Stroop, as explained in the comic.

The effect mentioned appears to be a mashup of seven scientific principles from different scientific fields, with elements from each principle appearing in the resulting description of the effect:

{{w|Bernoulli's principle}} in fluid dynamics (also mentioned in [[803: Airfoil]]) states that an increase in the speed of a fluid with certain properties occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy, often incorrectly used to explain how an airplane lifts off the ground. This is referenced by the firetruck lifting off.

The {{w|Doppler effect}} in physics refers to the change in a wave's frequency for an observer moving relative to its source. The effect can be observed from the siren sounding in an approaching vehicle. This is referenced by the firetruck moving towards the observer and making noise.

The {{w|Leidenfrost effect}} refers to how liquid will produce an insulating vapor layer when in near contact with an extremely hot surface, causing it to hover over said surface. This is referenced by the firetruck hovering on a layer of superheated gas.

The {{w|Peltzman effect}} refers to how regulations intended to increase safety are ineffective or counterproductive. This is likely referenced by the observer responding to a dangerous situation more slowly if the language he is warned in has a word describing the object he's in danger from ("firefighter") than if the language didn't.

The {{w|Sapir–Whorf hypothesis}} states that a person's world view and cognitive processes are affected by the structure of the language the person speaks. This is referenced by how the observer reacts differently depending on the {{w|Tone (linguistics)|tonality}} of the language in which the warning is uttered.

The {{w|Dunning–Kruger effect}} refers to unskilled people mistakenly perceive themselves as more skilled than they really are, while skilled people underestimate their own abilities. This is referenced by how observers react differently when they erroneously perceive themselves to be fluent in a language.

The {{w|Stroop effect}} refers to the phenomenon in which it is easier to name the color of the ink in which a word is written when the word refers to the same color as the ink than when the word refers to a different color. If we assume the firetruck is red, this suggests that the driver shouting '''RED''' would get a faster response than the driver shouting '''GREEN'''.

Usually, for an effect to be considered real, the scientific method requires the effect to be replicated by different experimenters in different times and places. It is hard to imagine several scientists in different parts of the world creating the setup to replicate this effect; however the title text mentions it has been done countless times.

==Transcript==

:Ponytail stands next to a screen displaying a firetruck hurtling toward Cueball on what appears to be a layer of gas.

:Ponytail: The Bernoulli-Doppler-Leidenfrost-Peltzman-Sapir-Whorf-Dunning-Kruger-Stroop Effect states that if a speeding fire truck lifts off and hurtles towards you on a layer of superheated gas, you'll dive out of the way faster if the driver screams ''"RED!"'' in a '''''non'''''-tonal language that '''''has''''' a word for "firefighter" than if they scream ''"GREEN!"'' in a '''''tonal''''' language with '''''no''''' word for "firefighter" which you '''''think''''' you're fluent in but '''''aren't'''''.

{{comic discussion}}

[[Category:Comics featuring Ponytail]]
[[Category:Science]]