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I'm in suburban northern California and we've had a serious heat wave this week, like 100+F all day reaching 107F in the late afternoon. I've had to go outside a few times and it's tolerable (like a sauna) if I don't stay out too long or do anything strenous. I don't think I could stand being outside all day even under tree cover. I have a contingency plan to head for the ocean (where it is cooler) if the power and AC should happen to go out here.
There are deer and other wildlife in the area. Any idea how they cope? Will they be ok? I think this amount of heat is unusual. Last year it may have hit 103 on a few occasions but not for multi-day periods like this.
There are some natural water sources (creeks) nearby that weren't dried up as of a few weeks ago, but I don't know about now. They did dry up in the worse parts of the drought a few years ago. So that's not so great either. 2601:644:8501:AAF0:0:0:0:9BB0 ( talk) 01:11, 6 July 2024 (UTC)
Thanks all. I checked the two creeks around here. One is empty though the dirt on the bottom is not bone dry yet. The other has some running water though I think the level is lower than before. There are also some artificial ponds with signs saying "recycled water". No idea what contaminants that might have, but if I were a deer I guess I'd drink it if I had to. 2601:644:8501:AAF0:0:0:0:9BB0 ( talk) 20:44, 7 July 2024 (UTC)
What is the average reading speed? Can you also say what the reading speed range is? In other words, words per minute. 2A02:8071:60A0:92E0:F986:A49B:556A:30A5 ( talk) 16:06, 7 July 2024 (UTC)
As a child in Madagascar I once saw a bird. We were on a boat going through a slow-moving river, somewhere in the northwest, probably in Mahajanga. There was an emergent mass of reeds and in those reeds I saw what looked like a shiny black chicken with webbed feet like a duck. Looked just like a typical chicken besides the feet. Itâs possible the reed mass was actually a shallow island, like a bar of sand or clay with some grasses. I need to know what it was! ê§ Zanaharyê§ 21:50, 7 July 2024 (UTC)
The dictionary definition of
OV at Wiktionary (also ă”) says:
However Wiktionary has no references. I cannot find references elsewhere. Maybe they exist but searching for "OV", especially when including "ovulation" gives many false positives. Can you find a reference for the existence and meaning of this unit, preferably in a language I can understand, such as English or Spanish? I guess most references are in Japanese, that I don't understand. -- Error ( talk) 10:44, 8 July 2024 (UTC)
I learned of the "hillocks of Hiss" from the wikipedia article on Tubercle Tubercle#Ears
From looking at other sources, I see they're also spelt "hillocks of his" -- What I cannot find out, and what I'm asking y'all is, *why* they are called 'Hiss/His' are they named for a person? 140.147.160.225 ( talk) 12:02, 8 July 2024 (UTC)
The most important theory arose in 1855 when Wilhelm His named six cartilaginous hillocks as the original auricular structures.
If aliens took a spherical Kuiper belt object with the composition of Saturn's highest-water-content ring and the perihelion of Pluto, and reshaped it into a cube, how massive would it have to be for humans to detect the shape change before gravity reverted it? Neon Merlin 05:49, 10 July 2024 (UTC)
If I drank a 0,5 l bottle of 5,3 % beer and another 0,5 l of a 4,9% beer, would it be correct to say that I drank 1 litre of 10,2% beer from physiological and chemical perspective? 212.180.235.46 ( talk) 07:48, 10 July 2024 (UTC)
The laws of gravity are presumably the same throughout the universe: the force is proportional to the product of the masses and inversely proportional to the square of the distances. So why do we observe very different structures at different scales? Solar systems involve a few discrete objects orbiting a sun, galaxies have various shapes but often spirals, and then over larger distances the distribution of galaxies is like a 3-D network of filaments. I believe that simulation models can produce all these different structures, but I am hoping for some intuitive explanation of why the different outcomes. One possibility might be that things happen relatively faster over small distances, and that the universe would also develop into something like a giant solar system given more time. Another possibility is that some processes happening only at the local scale (e.g. nuclear fusion in stars) interfere with what would happen if gravity alone were operating. Or is it something else entirely? Thanks. JMCHutchinson ( talk) 12:01, 11 July 2024 (UTC)
Hi. I've noticed that the term "neuroplastic pain" has 700 thousand hits on Bing search, but there is no article or redirect for it on Wikipedia. However, it seems similar to nociplastic pain, but I'm not completely sure. Is here anyone with medical background who could confirm/decline this? -- Pek ( talk) 16:35, 11 July 2024 (UTC)
Our article
Velocity factor states: The velocity factor...is the ratio, of the speed at which a wavefront (of an electromagnetic signal)...passes through the medium, to the speed of light in vacuum.
So it seems that the velocity of an electromagnetic wavefront does depend on the medium.
However, our article
Front velocity states: The earliest appearance of the front of an electromagnetic disturbance (the precursor) travels at the front velocity, which is c, no matter what the medium
. Similarly, our article
Wavefront states: Wavefronts travel with the speed of light in all directions in an isotropic medium
. So it seems that the velocity of an electromagnetic wavefront does not depend on the medium.
I wonder whether this is a contradiction between our articles (if so then how should they be corrected?), or - probably - I miss something here (if so then what do I miss?)... HOTmag ( talk) 21:00, 11 July 2024 (UTC)
the wave discontinuity, called the front, propagates at a speed less than or equal to the speed of light c in any medium. In fact, the earliest appearance of the front of an electromagnetic disturbance (the precursor) travels at the front velocity, which is c, no matter what the medium.
If I want the value of the speed of light to be independent of medium, I must refer to the front velocity of a beam of light containing the highest frequencies possible, right?" HOTmag ( talk) 10:53, 12 July 2024 (UTC)
According to the uncertainty principle the electron has a momentum :
.
To conserve the atom momentum zero , the proton must have a momentum  :
.
So and the proton must also smear to atom's full size.
But Rutherford scattering experiment shows that a size of a nucleus is smaller. Why does the uncertainty principle fail? â Preceding unsigned comment added by U240700 ( talk âą contribs) 08:54, 12 July 2024 (UTC)
What procedure did Anders Gustaf Ekeberg use to isolate metallic tantalum? Double sharp ( talk) 09:11, 13 July 2024 (UTC)
Thanks. The German translation AstroLynx points to can be copy-pasted from the generated PDF, so here's a somewhat cleaned-up reading of the relevant bit:
Dieser neue Metallstoff zeichnet sich durch seine Unauflöslichkeit in alle SĂ€uren, wie man ihn auch mit denselben behandelt, aus. Das einzige Auflösungsmittel, das ich auf denselben wirksam gefunden habe, ist das Ă€tzende fixe Laugensalz, so daĂ, wenn man das Erz mit demselben brennt, und das Gemenge mit Wasser auszieht, ein groĂer Theil in der laugensalzigen Lauge aufgelöst wird. Aus derselben kann er durch eine SĂ€ure gefĂ€llt werden, aber der Niederschlag wird nicht wieder aufgelöst, wie viele SĂ€ure man auch zugieĂen mag. Abgeseihet und getrocknet erscheint er als ein Pulver von ausgezeichneter WeiĂe, welche Farbe er auch beym GlĂŒhen behĂ€lt. Wenn der Theil des gebrannten Klumpens, welcher von der laugensalzigen Lauge nicht aufgenommen ist, mit SĂ€ure ausgezogen wird, bleibt ein weiĂes Pulver von gleicher Beschaffensheit nach. Seine eigenthĂŒmliche Schwere, nach dem GlĂŒhen, war 6,500. Vor dem Blaserohre wird er leicht vom Borax und Phosphorsalze aufgelöst, gibt den FlĂŒssen aber keine Farbe. Auf einem Heerde von KohlengestĂ€be in einem Ziegel, ohne ZusaĂ der Hitze, welche zu einer Braunsteinprobe erfordert wird, ausgefeĂt, untergeht er eine Art von Verfrischung, bey welcher er zu einem grĂŒnlich harten Klumpen zusammensiedet, welcher auf der OberflĂ€che einen metallischen Glanz hat, aber im Bruche nur matt glĂ€nzt und schwarze grĂŒn aussieht. Auf diesen haben SĂ€uren keine weitere Wirkung, als daĂ fie ihn wieder zu der weiĂen HalbsĂ€ure verwandeln. Das Verhalten bey der Verfrischung und die eigenthĂŒmliche Schwere, gaben mir Anleitung, diesen besondern Körper unter die Metalle zu rechnen.
It sounds like the English abridgement omitted to notice the word Erz there. That makes the procedure sensible: it seems that Ekeberg converted the ore via alkaline digestion to Ta2O5 (certainly a mixture with Nb2O5, though he wouldn't know that), then attempted to reduce it with carbon. This actually should have a quite poor yield under his likely experimental conditions, but clearly, it was enough for him to draw the correct conclusion. I'm extremely impressed. (V, Nb, and Ta are quite a pain to reduce from the oxides to the elemental metals, especially if you want a reasonably pure product.) Double sharp ( talk) 10:05, 15 July 2024 (UTC)
"Get more energy out than you put in." ( https://astronaerospace.com/) Is this legit? Has this been demonstrated or are they just good at making slick CGI animations (better than at spelling)? Thank you. Hevesli ( talk) 16:33, 15 July 2024 (UTC)
Julian day says that the next Julian period will begin in AD 3268. When representing dates after this period begins, do mathematicians/astronomers/etc. reset the date count to 1 in 3268, or do they continue incrementing dates unchanged from 3267? If this is answered in the article, I missed it. Nyttend ( talk) 21:57, 15 July 2024 (UTC)
Could you find a specific citable source for no-reset? I'm uncomfortable citing the software, and I can't find the quote in McCarthy. Nyttend ( talk) 21:44, 18 July 2024 (UTC)
This is a small park on the Homer Spit. We mostly have Sitka Spruce as far as evergreens around here, so I suspect these are specimen trees, probably some kind of pine tree but I'm not sure what kind. They aren't very big but that may be because they are out of their usual range. Just Step Sideways from this world ..... today 20:37, 17 July 2024 (UTC)
Scene in Laramie, Wyoming, USA. I'd like to put it into Commons categories for the trees along the street â particularly the big prominent one near the centre â but I don't know anything about this kind of thing. Nyttend ( talk) 08:04, 18 July 2024 (UTC) PS, I was guessing blue spruce for the big one at the centre, but the shape is quite different from those of the trees pictured in that article. Nyttend ( talk) 08:20, 18 July 2024 (UTC)
For deriving the Lorentz transformations, our article
Derivations of the Lorentz transformations relies on their linearity. How do we know they must be linear? our article answers: Since space is assumed to be homogeneous, the transformation[s] must be linear.
I wonder, how their linearity is deduced from the homogeneity of space, before we know how they will look like...
HOTmag (
talk)
23:41, 18 July 2024 (UTC)
So I get that in around 100 billion years, our observable universe will be limited to the Local Group due to Hubble expansion (bummer), but would that include the Virgo Cluster? Some sources say that they would join due to gravity ( https://astronomy.swin.edu.au/cosmos/V/Virgo+Cluster, /info/en/?search=Observable_universe) but I'm also reading responses saying the Hubble expansion is more powerful and therefore Virgo would end up outside of the observable universe. I realize there a lot of variables that we don't know or could change. 184.96.249.124 ( talk) 02:28, 19 July 2024 (UTC)
Main page: Help searching Wikipedia
  Â
How can I get my question answered?
How do I answer a question?
Main page: Wikipedia:Reference desk/Guidelines
I'm in suburban northern California and we've had a serious heat wave this week, like 100+F all day reaching 107F in the late afternoon. I've had to go outside a few times and it's tolerable (like a sauna) if I don't stay out too long or do anything strenous. I don't think I could stand being outside all day even under tree cover. I have a contingency plan to head for the ocean (where it is cooler) if the power and AC should happen to go out here.
There are deer and other wildlife in the area. Any idea how they cope? Will they be ok? I think this amount of heat is unusual. Last year it may have hit 103 on a few occasions but not for multi-day periods like this.
There are some natural water sources (creeks) nearby that weren't dried up as of a few weeks ago, but I don't know about now. They did dry up in the worse parts of the drought a few years ago. So that's not so great either. 2601:644:8501:AAF0:0:0:0:9BB0 ( talk) 01:11, 6 July 2024 (UTC)
Thanks all. I checked the two creeks around here. One is empty though the dirt on the bottom is not bone dry yet. The other has some running water though I think the level is lower than before. There are also some artificial ponds with signs saying "recycled water". No idea what contaminants that might have, but if I were a deer I guess I'd drink it if I had to. 2601:644:8501:AAF0:0:0:0:9BB0 ( talk) 20:44, 7 July 2024 (UTC)
What is the average reading speed? Can you also say what the reading speed range is? In other words, words per minute. 2A02:8071:60A0:92E0:F986:A49B:556A:30A5 ( talk) 16:06, 7 July 2024 (UTC)
As a child in Madagascar I once saw a bird. We were on a boat going through a slow-moving river, somewhere in the northwest, probably in Mahajanga. There was an emergent mass of reeds and in those reeds I saw what looked like a shiny black chicken with webbed feet like a duck. Looked just like a typical chicken besides the feet. Itâs possible the reed mass was actually a shallow island, like a bar of sand or clay with some grasses. I need to know what it was! ê§ Zanaharyê§ 21:50, 7 July 2024 (UTC)
The dictionary definition of
OV at Wiktionary (also ă”) says:
However Wiktionary has no references. I cannot find references elsewhere. Maybe they exist but searching for "OV", especially when including "ovulation" gives many false positives. Can you find a reference for the existence and meaning of this unit, preferably in a language I can understand, such as English or Spanish? I guess most references are in Japanese, that I don't understand. -- Error ( talk) 10:44, 8 July 2024 (UTC)
I learned of the "hillocks of Hiss" from the wikipedia article on Tubercle Tubercle#Ears
From looking at other sources, I see they're also spelt "hillocks of his" -- What I cannot find out, and what I'm asking y'all is, *why* they are called 'Hiss/His' are they named for a person? 140.147.160.225 ( talk) 12:02, 8 July 2024 (UTC)
The most important theory arose in 1855 when Wilhelm His named six cartilaginous hillocks as the original auricular structures.
If aliens took a spherical Kuiper belt object with the composition of Saturn's highest-water-content ring and the perihelion of Pluto, and reshaped it into a cube, how massive would it have to be for humans to detect the shape change before gravity reverted it? Neon Merlin 05:49, 10 July 2024 (UTC)
If I drank a 0,5 l bottle of 5,3 % beer and another 0,5 l of a 4,9% beer, would it be correct to say that I drank 1 litre of 10,2% beer from physiological and chemical perspective? 212.180.235.46 ( talk) 07:48, 10 July 2024 (UTC)
The laws of gravity are presumably the same throughout the universe: the force is proportional to the product of the masses and inversely proportional to the square of the distances. So why do we observe very different structures at different scales? Solar systems involve a few discrete objects orbiting a sun, galaxies have various shapes but often spirals, and then over larger distances the distribution of galaxies is like a 3-D network of filaments. I believe that simulation models can produce all these different structures, but I am hoping for some intuitive explanation of why the different outcomes. One possibility might be that things happen relatively faster over small distances, and that the universe would also develop into something like a giant solar system given more time. Another possibility is that some processes happening only at the local scale (e.g. nuclear fusion in stars) interfere with what would happen if gravity alone were operating. Or is it something else entirely? Thanks. JMCHutchinson ( talk) 12:01, 11 July 2024 (UTC)
Hi. I've noticed that the term "neuroplastic pain" has 700 thousand hits on Bing search, but there is no article or redirect for it on Wikipedia. However, it seems similar to nociplastic pain, but I'm not completely sure. Is here anyone with medical background who could confirm/decline this? -- Pek ( talk) 16:35, 11 July 2024 (UTC)
Our article
Velocity factor states: The velocity factor...is the ratio, of the speed at which a wavefront (of an electromagnetic signal)...passes through the medium, to the speed of light in vacuum.
So it seems that the velocity of an electromagnetic wavefront does depend on the medium.
However, our article
Front velocity states: The earliest appearance of the front of an electromagnetic disturbance (the precursor) travels at the front velocity, which is c, no matter what the medium
. Similarly, our article
Wavefront states: Wavefronts travel with the speed of light in all directions in an isotropic medium
. So it seems that the velocity of an electromagnetic wavefront does not depend on the medium.
I wonder whether this is a contradiction between our articles (if so then how should they be corrected?), or - probably - I miss something here (if so then what do I miss?)... HOTmag ( talk) 21:00, 11 July 2024 (UTC)
the wave discontinuity, called the front, propagates at a speed less than or equal to the speed of light c in any medium. In fact, the earliest appearance of the front of an electromagnetic disturbance (the precursor) travels at the front velocity, which is c, no matter what the medium.
If I want the value of the speed of light to be independent of medium, I must refer to the front velocity of a beam of light containing the highest frequencies possible, right?" HOTmag ( talk) 10:53, 12 July 2024 (UTC)
According to the uncertainty principle the electron has a momentum :
.
To conserve the atom momentum zero , the proton must have a momentum  :
.
So and the proton must also smear to atom's full size.
But Rutherford scattering experiment shows that a size of a nucleus is smaller. Why does the uncertainty principle fail? â Preceding unsigned comment added by U240700 ( talk âą contribs) 08:54, 12 July 2024 (UTC)
What procedure did Anders Gustaf Ekeberg use to isolate metallic tantalum? Double sharp ( talk) 09:11, 13 July 2024 (UTC)
Thanks. The German translation AstroLynx points to can be copy-pasted from the generated PDF, so here's a somewhat cleaned-up reading of the relevant bit:
Dieser neue Metallstoff zeichnet sich durch seine Unauflöslichkeit in alle SĂ€uren, wie man ihn auch mit denselben behandelt, aus. Das einzige Auflösungsmittel, das ich auf denselben wirksam gefunden habe, ist das Ă€tzende fixe Laugensalz, so daĂ, wenn man das Erz mit demselben brennt, und das Gemenge mit Wasser auszieht, ein groĂer Theil in der laugensalzigen Lauge aufgelöst wird. Aus derselben kann er durch eine SĂ€ure gefĂ€llt werden, aber der Niederschlag wird nicht wieder aufgelöst, wie viele SĂ€ure man auch zugieĂen mag. Abgeseihet und getrocknet erscheint er als ein Pulver von ausgezeichneter WeiĂe, welche Farbe er auch beym GlĂŒhen behĂ€lt. Wenn der Theil des gebrannten Klumpens, welcher von der laugensalzigen Lauge nicht aufgenommen ist, mit SĂ€ure ausgezogen wird, bleibt ein weiĂes Pulver von gleicher Beschaffensheit nach. Seine eigenthĂŒmliche Schwere, nach dem GlĂŒhen, war 6,500. Vor dem Blaserohre wird er leicht vom Borax und Phosphorsalze aufgelöst, gibt den FlĂŒssen aber keine Farbe. Auf einem Heerde von KohlengestĂ€be in einem Ziegel, ohne ZusaĂ der Hitze, welche zu einer Braunsteinprobe erfordert wird, ausgefeĂt, untergeht er eine Art von Verfrischung, bey welcher er zu einem grĂŒnlich harten Klumpen zusammensiedet, welcher auf der OberflĂ€che einen metallischen Glanz hat, aber im Bruche nur matt glĂ€nzt und schwarze grĂŒn aussieht. Auf diesen haben SĂ€uren keine weitere Wirkung, als daĂ fie ihn wieder zu der weiĂen HalbsĂ€ure verwandeln. Das Verhalten bey der Verfrischung und die eigenthĂŒmliche Schwere, gaben mir Anleitung, diesen besondern Körper unter die Metalle zu rechnen.
It sounds like the English abridgement omitted to notice the word Erz there. That makes the procedure sensible: it seems that Ekeberg converted the ore via alkaline digestion to Ta2O5 (certainly a mixture with Nb2O5, though he wouldn't know that), then attempted to reduce it with carbon. This actually should have a quite poor yield under his likely experimental conditions, but clearly, it was enough for him to draw the correct conclusion. I'm extremely impressed. (V, Nb, and Ta are quite a pain to reduce from the oxides to the elemental metals, especially if you want a reasonably pure product.) Double sharp ( talk) 10:05, 15 July 2024 (UTC)
"Get more energy out than you put in." ( https://astronaerospace.com/) Is this legit? Has this been demonstrated or are they just good at making slick CGI animations (better than at spelling)? Thank you. Hevesli ( talk) 16:33, 15 July 2024 (UTC)
Julian day says that the next Julian period will begin in AD 3268. When representing dates after this period begins, do mathematicians/astronomers/etc. reset the date count to 1 in 3268, or do they continue incrementing dates unchanged from 3267? If this is answered in the article, I missed it. Nyttend ( talk) 21:57, 15 July 2024 (UTC)
Could you find a specific citable source for no-reset? I'm uncomfortable citing the software, and I can't find the quote in McCarthy. Nyttend ( talk) 21:44, 18 July 2024 (UTC)
This is a small park on the Homer Spit. We mostly have Sitka Spruce as far as evergreens around here, so I suspect these are specimen trees, probably some kind of pine tree but I'm not sure what kind. They aren't very big but that may be because they are out of their usual range. Just Step Sideways from this world ..... today 20:37, 17 July 2024 (UTC)
Scene in Laramie, Wyoming, USA. I'd like to put it into Commons categories for the trees along the street â particularly the big prominent one near the centre â but I don't know anything about this kind of thing. Nyttend ( talk) 08:04, 18 July 2024 (UTC) PS, I was guessing blue spruce for the big one at the centre, but the shape is quite different from those of the trees pictured in that article. Nyttend ( talk) 08:20, 18 July 2024 (UTC)
For deriving the Lorentz transformations, our article
Derivations of the Lorentz transformations relies on their linearity. How do we know they must be linear? our article answers: Since space is assumed to be homogeneous, the transformation[s] must be linear.
I wonder, how their linearity is deduced from the homogeneity of space, before we know how they will look like...
HOTmag (
talk)
23:41, 18 July 2024 (UTC)
So I get that in around 100 billion years, our observable universe will be limited to the Local Group due to Hubble expansion (bummer), but would that include the Virgo Cluster? Some sources say that they would join due to gravity ( https://astronomy.swin.edu.au/cosmos/V/Virgo+Cluster, /info/en/?search=Observable_universe) but I'm also reading responses saying the Hubble expansion is more powerful and therefore Virgo would end up outside of the observable universe. I realize there a lot of variables that we don't know or could change. 184.96.249.124 ( talk) 02:28, 19 July 2024 (UTC)