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I learned in school that most movies contain twenty four frames per second. This is a two part question:
The question above got me thinking: shouldn't there be a flicker from the interference between reality's framerate and my eye's framerate??? Even if reality's is a hundred times higher there should still be barely perceptible flicker, maybe less than once per second depending on how long it takes for the two to get in synch again... —Preceding unsigned comment added by 82.124.214.224 ( talk) 02:51, 6 November 2008 (UTC)
I had a brainwave one day while walking down the street for school that a black hole does not need to have a singularity! My idea was like this: in general relativity, time slows with an increasing gravitational field. Then, in a collapsing star, its mass will never be squeezed into zero volume because the collapse will also be slowed down infinitely when the mass is squeezed into the Schwarzschild radius! Maybe this is why general relativity breaks down in singularities, in the singularity, time goes to the infinites and complex numbers and the universe did not exist at that time! So, perhaps we have to change our definition of black holes into an object with density equal or larger to a certain density(precisely c^6/6G^3M^2 after calculation)! But i didn't use General Relativity. So can anyone who knows General Relativity calculate and tell me is it true or not, please? The Successor of Physics 07:58, 6 November 2008 (UTC)—Preceding
unsigned comment added by
Superwj5 (
talk •
contribs)
03:15, 6 November 2008 (UTC)
Have endocannabinoids or their absence been implicated or ruled out as part of the mechanism of autism spectrum disorders? Neon Merlin 05:12, 6 November 2008 (UTC)
I recently read A Brief History of Time and was underwhelmed, but curious about one chapter that seems to say: if time is real it has a singularity at the Big Bang, but if time is imaginary we can think of space-time as a smooth hypersphere – or was it the other way round? – and choosing one or the other is a matter of taste. Eh? As a layman not afraid of the occasional bit of math, is there something I can read that makes more sense of this? — Tamfang ( talk) 05:42, 6 November 2008 (UTC)
What is the temperature of pure heat (not mainstream science which says heat cannot exist in pure form). also, is it possible to extract pure heat in solid or gas form, or only liquid? (also not mainstream science persp). thank you! —Preceding unsigned comment added by 82.124.214.224 ( talk) 07:17, 6 November 2008 (UTC)
I don't understand you guys, I clearly said I wasn't looking for the mainstream scientific perspective! I said it in the title. I said it in my first sentence. I said it in my second sentence. I guess I should have said it after "thank you" as well. As for the answers you guys gave me, I acknowledged them already in the question, saying "mainstream science [...] says heat cannot exist in pure form". So after I've already acknowledged your perspective, and explicitly asked for a different one, why bother to write all that? It's all in the heat article, or in the history of heat under 18th, 19th, and 20th centuries. Why spend time retyping an article?
To reiterarte, I asked a simple question, what is the TEMPEREATURE of pure heat, in liquid form, not from the point of view of scientists who say pure heat is not possible at all. Further, can pure heat be extracted in solid or gas form, or only liquid form -- again, NOT from the point of view of scientists who say pure heat is not possible. Answering hint: you might say 'there is no point of view in the world, held by a single scientist, pseudoscientist, crank, crackpot, or layman, according to which pure heat is possible', though in this case you'd better have a reference for this bold assertion. But if this point of view exists, then that's what I'm asking for -- so if you give an answer that is consistent with the idea that pure heat is not possible, you're NOT answering my question, but only retyping a wikipedia article. (Maybe you could better spend you time adding your thoughts to the heat article in that case?) —Preceding unsigned comment added by 82.124.214.224 ( talk) 14:51, 6 November 2008 (UTC)
If I understand right, you're asking what (in a hypothetical world) absolute hotness might look like. Now, I could be silly and say [insert sexy movie star name here] embodies absolute hotness, but let's try to answer the question instead.
Initially, it seems like you're asking for the impossible, yes. You're asking for something which is measurable, like "speed" or "distance" or "gallons per second through a pipe", then are asking "what would absolute speed be like?", "what would absolute distance be like?", "what would absolute water flow rate be like?".
Normally, absolutes are the domain of religions. God is allegedly completely good, all-knowing, all-seeing, everywhere, every when, he is the absolute of heat but also of cold, blah blah blah... nonsense words that sound impressive.
But let's try absolute temperature. I think I remember from highschool that heat is from atoms jiggling. The faster they jiggle, the more heat there is. The more atoms you have with the jidggling, the more heat there is. That gif of the rattling things is a good description of heat. The more atoms you have per unit volume, jiggling faster, the more energy you have in heat form. So it's a function of speed and density.
So. Speed. Beyond a certain point, the atoms in a solid get so energetic, they can't keep structure, and they turn to liquid: the solid melts. And then, beyond even that, they fly apart, becoming a gas: the solid boils. Finally, even the gas breaks, as the atoms fall apart, and you get a plasma.
So, "absolute heat" will involve the elements moving at light speed, so it'll be be a plasma, I think. Even atoms couldn't exist in it. However, the denser something is, the more heat it can store, so, it'd have to be as dense as it can possibly be. A black hole. A singularity.
I think, then, "absolute heat" would give you a singularity with the bits inside it moving around at light speed. You couldn't get denser and you couldn't get faster. Except that there's nowhere in the singularity for the bits to move TO. So they'd have to move in synch, the whole singularity vibrating together.
That's the best I can do, anyway. Hope that helps you with your NaNoWriMo god of heat (am I right?) DewiMorgan ( talk) 21:29, 8 November 2008 (UTC)
Heat is electromagnetic radiation that is within a certain range of frequencies. If the radiation falls on a solid physical object, it makes the atoms at the surface of the object quiver faster (assuming the body was relatively cool). The increased quivering is passed on to atoms deeper in the body (heat conduction). In the case of a gas or liquid, the atoms are free to move, so they move faster and quiver faster (convection currents can also occur). Thus when an object is hot its atoms quiver or move rapidly. But heat itself is electromagnetic radiation. One more point is that quivering atoms radiate electromagnetic heat, and an object becomes warmer or cooler depending on the net income-outgo of radiant heat.
Hi,
I want to blast ca. 40,000 70bp (approx) sequences against a particular genome to see which of them are present in the genome. Does anyone know how I could go about this?
Many thanks
141.14.245.167 ( talk) 09:16, 6 November 2008 (UTC)
What is trubenising? —Preceding unsigned comment added by 203.153.35.130 ( talk) 12:22, 6 November 2008 (UTC)
One of the effects of a Lamictal overdose is seizures. Can someone please explain to me, in terms of like biology and pharmacology, how an anti-seizure medication can cause seizures? Thanks. —Preceding unsigned comment added by Jamlessness ( talk • contribs) 14:12, 6 November 2008 (UTC)
In a science-fiction alternate universe in which heat was a liquid of some kind that flowed from thing to thing, making it hot, was produced in exothermic reactions, etc, what would be the most plausible temperature for the liquid? If you insist, you can move this question to the humanity section. —Preceding unsigned comment added by 82.124.214.224 ( talk) 16:27, 6 November 2008 (UTC)
See Caloric theory. This is not as wacky idea as it may sound, this was once the prevailing scientific theory of heat. You will likely receive some good insight by reading that article... -- Jayron32. talk. contribs 17:52, 6 November 2008 (UTC)
One of the problems with these sorts of "what if just this one thing were different" questions is that it's very easy to get inconsistencies. Scientific theory is constructed to be self-consistent, and changing one rule may make others absurd (in fact proving that a theory leads to contradictions is a major way in which both math and science work). You have to specify what sort of situations you want the new fictional theory to hold, and which you can safely ignore, in order for there to be some semblance of consistency. (And even then, someone will likely find a hole related to something you ignored.) - With that in mind, lets look at heat and temperature. If you take 1L of water, and add a given amount of heat, you raise the temperature. If you take half a liter, you only need half the heat. So it's not the total amount of heat that determines the temperature, it's the "density." If you could "distill" pure liquid heat, the temperature would likely depend on how concentrated you could get it. How much more caloric does 100 L of boiling water have than 100 L of water at freezing? 1 L? 1 mL? 1 nL? The temperature-as-heat-density could vary by orders of magnitudes. You'd have to take into consideration heat capacity as well, though. A given amount of heat applied to 1 L of water doesn't raise the temperature to the same amount as it does when applied to the same amount, either by mass or by volume, of air, metal, or even oil. You'd also need to think about heat of vaporization and heat of fusion. You have to add a lot of heat to ice at 0 C to get it to melt, and once it's melted, the temperature is still at 0 C. One potential dodge is to claim temperature as being the density of "free" caloric, and claim that a certain amount of heat binds to or reacts with the material when it melts/freezes. This can also explain away the heat capacity issue, if you claim that a portion of the caloric doesn't go to increasing the temperature, but binds/reacts with the substance. The temperature of your "pure" caloric would then be related to the hypothesized density, as well and the fraction which gets bound up. (You could even postulate that pure heat has a temperature of near absolute zero, if in your fictional world you say that in pure form caloric "binds to" itself, thus resulting in no "free" caloric, and thus a low "free" caloric density (temperature).) - As mentioned above, once you remove yourself from reality, you can make practically any answer "correct". -- 128.104.112.72 ( talk) 19:19, 6 November 2008 (UTC)
Guess I was wrong about the NaNo God then :) DewiMorgan ( talk) 21:42, 8 November 2008 (UTC)
Not for medical advice or anything but I've been juicing 3 more or less mid sized apples and consuming the juice everyday for the last week or so. Is this amount large enough to induce iron toxicity related disorders? Leif edling ( talk) 17:38, 6 November 2008 (UTC)
It might also be worth pointing out that apples have a little bit of vitamin C, which enhances iron absorption. On that count, though, you might want to be more concerned about oranges. Not that apples and oranges are comparable in any way. SDY ( talk) 21:45, 7 November 2008 (UTC)
Too late for a word, I guess, but, referring to Tango 's objections, the words i opened my question with were meant as a sort of a disclaimer to say that if i took the opinion by people replying to my question and it harmed me , i would have none to blame but my foolish self. I don't understand (dont know, rather) why medical advice with proper disclaimers is not allowed on Wikipedia. Leif edling ( talk) 16:53, 12 November 2008 (UTC)
In proton proton chain, gamma ray is gradually released. But is there any fixed energy limit of this ray (i.e range of frequence) or is it same as the common gamma ray? 117.201.97.211 ( talk) 17:38, 6 November 2008 (UTC)
Two questions:
1. Why is shorter wavelength (i.e. bluer) light subject to more scattering in air than longer wavelengths?
2. Regarding why the sky is bluer overhead than at the horizon, I had a look at
this but I still don't understand why the increased scattering of light coming from the horizon makes it lighter.
Thanks,
Zain Ebrahim (
talk)
17:58, 6 November 2008 (UTC)
No, I'm not asking for medical advice. ;) This is just curiosity. There seems to be a large contradiction between the Hot sauce article, in which it's stated that the "heat" caused by Capsaicin is a harmless chemical reaction, and the Capsaicin Toxicity, it's now claimed to be potentially fatal. Is Capsaicin fatal in large amounts because of the body's reaction to it? -- Sarcasticninja ( talk) 18:44, 6 November 2008 (UTC)
Animal | Oral toxicity ( mg/ kg) | |
---|---|---|
TDLo | LD50 | |
Cat | 200 | |
Dog | 16 | 300 |
Mouse | 837 | |
Rat | 1265 |
What would a cat scan of a serial killer's brain look like? Meaning besides those who are not serial killers? -- Emyn ned ( talk) 21:30, 6 November 2008 (UTC)
I would not be at all surprised to find some structural differences between people whose behavior is normal and those whose behavior is grossly abnormal, like serial killers. WE know that brain damage can cause aberrant behavior, like those with bullet wounds to the brain or those who were the victims of psychosurgery. Similarly brain trauma from alcohol or the effects of Altzheimers, strokes, or abnormal intracranial pressure cause abnormal behavior.
Edison (
talk)
00:41, 7 November 2008 (UTC)
The difference is "psychological, not physical"? Well, physical differences in gross structure can manifest as psychological differences. Steve Pinker writes in The Blank Slate, "convicted murderers and other violent, antisocial people are likely to have a smaller and less active prefrontal cortex, the part of the brain that governs decision making and inhibits impulses." -- VectorField ( talk) 07:40, 13 November 2008 (UTC)
I know I read about this in wikipedia but for the life of me could not figure out how to search for the question or the answer in order to locate that page again. —Preceding unsigned comment added by 12.34.246.35 ( talk) 22:08, 6 November 2008 (UTC)
Can these breed together to produce healthy offspring? —Preceding unsigned comment added by 84.71.86.42 ( talk) 23:03, 6 November 2008 (UTC)
Is there any scientific reason why negative calorie foods can't be artificially produced? Or even just negative calorie additives — e.g. a flavorless substance that would burn calories, that could be, say, added to a cheeseburger to make the net calorie gain only a handful or so? Could one describe what characteristics such a substance would have on a chemical or structural level? It seems to me that such a product could have a variety of medical benefits for the very obese, especially those who are obese to the point that the possibility of an exercise regimen is severely diminished. This would not be the same thing as a substance that was simply zero calories, of course (which seems comparatively straightforward—anything that can't be digested, among other things!). -- 98.217.8.46 ( talk) 23:36, 6 November 2008 (UTC)
Related to a question asked before about chimp strength. They are much smaller than humans, but much stronger. Is this due to the density of their muscles? Are our muscles just bulky, but not very dense? I also read that humans have greater endurance than most other apes. Do animals with dense muscles have less endurance or is endurance due to other factors like lungs, blood flow, etc? 98.221.85.188 ( talk) 23:39, 6 November 2008 (UTC)
Which blue planet is colder is it Uranus and Neptune. Those two planets is identical, by blue colors, 4 times bigger than Earth, so would they have the same surface temp, average for both is -210 C or -350 F. Some say Uranus is colder, some say neptune is colder becasue uranus is hazier.-- FR W Y 23:54, 6 November 2008 (UTC)
Science desk | ||
---|---|---|
< November 5 | << Oct | November | Dec >> | November 7 > |
Welcome to the Wikipedia Science Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
I learned in school that most movies contain twenty four frames per second. This is a two part question:
The question above got me thinking: shouldn't there be a flicker from the interference between reality's framerate and my eye's framerate??? Even if reality's is a hundred times higher there should still be barely perceptible flicker, maybe less than once per second depending on how long it takes for the two to get in synch again... —Preceding unsigned comment added by 82.124.214.224 ( talk) 02:51, 6 November 2008 (UTC)
I had a brainwave one day while walking down the street for school that a black hole does not need to have a singularity! My idea was like this: in general relativity, time slows with an increasing gravitational field. Then, in a collapsing star, its mass will never be squeezed into zero volume because the collapse will also be slowed down infinitely when the mass is squeezed into the Schwarzschild radius! Maybe this is why general relativity breaks down in singularities, in the singularity, time goes to the infinites and complex numbers and the universe did not exist at that time! So, perhaps we have to change our definition of black holes into an object with density equal or larger to a certain density(precisely c^6/6G^3M^2 after calculation)! But i didn't use General Relativity. So can anyone who knows General Relativity calculate and tell me is it true or not, please? The Successor of Physics 07:58, 6 November 2008 (UTC)—Preceding
unsigned comment added by
Superwj5 (
talk •
contribs)
03:15, 6 November 2008 (UTC)
Have endocannabinoids or their absence been implicated or ruled out as part of the mechanism of autism spectrum disorders? Neon Merlin 05:12, 6 November 2008 (UTC)
I recently read A Brief History of Time and was underwhelmed, but curious about one chapter that seems to say: if time is real it has a singularity at the Big Bang, but if time is imaginary we can think of space-time as a smooth hypersphere – or was it the other way round? – and choosing one or the other is a matter of taste. Eh? As a layman not afraid of the occasional bit of math, is there something I can read that makes more sense of this? — Tamfang ( talk) 05:42, 6 November 2008 (UTC)
What is the temperature of pure heat (not mainstream science which says heat cannot exist in pure form). also, is it possible to extract pure heat in solid or gas form, or only liquid? (also not mainstream science persp). thank you! —Preceding unsigned comment added by 82.124.214.224 ( talk) 07:17, 6 November 2008 (UTC)
I don't understand you guys, I clearly said I wasn't looking for the mainstream scientific perspective! I said it in the title. I said it in my first sentence. I said it in my second sentence. I guess I should have said it after "thank you" as well. As for the answers you guys gave me, I acknowledged them already in the question, saying "mainstream science [...] says heat cannot exist in pure form". So after I've already acknowledged your perspective, and explicitly asked for a different one, why bother to write all that? It's all in the heat article, or in the history of heat under 18th, 19th, and 20th centuries. Why spend time retyping an article?
To reiterarte, I asked a simple question, what is the TEMPEREATURE of pure heat, in liquid form, not from the point of view of scientists who say pure heat is not possible at all. Further, can pure heat be extracted in solid or gas form, or only liquid form -- again, NOT from the point of view of scientists who say pure heat is not possible. Answering hint: you might say 'there is no point of view in the world, held by a single scientist, pseudoscientist, crank, crackpot, or layman, according to which pure heat is possible', though in this case you'd better have a reference for this bold assertion. But if this point of view exists, then that's what I'm asking for -- so if you give an answer that is consistent with the idea that pure heat is not possible, you're NOT answering my question, but only retyping a wikipedia article. (Maybe you could better spend you time adding your thoughts to the heat article in that case?) —Preceding unsigned comment added by 82.124.214.224 ( talk) 14:51, 6 November 2008 (UTC)
If I understand right, you're asking what (in a hypothetical world) absolute hotness might look like. Now, I could be silly and say [insert sexy movie star name here] embodies absolute hotness, but let's try to answer the question instead.
Initially, it seems like you're asking for the impossible, yes. You're asking for something which is measurable, like "speed" or "distance" or "gallons per second through a pipe", then are asking "what would absolute speed be like?", "what would absolute distance be like?", "what would absolute water flow rate be like?".
Normally, absolutes are the domain of religions. God is allegedly completely good, all-knowing, all-seeing, everywhere, every when, he is the absolute of heat but also of cold, blah blah blah... nonsense words that sound impressive.
But let's try absolute temperature. I think I remember from highschool that heat is from atoms jiggling. The faster they jiggle, the more heat there is. The more atoms you have with the jidggling, the more heat there is. That gif of the rattling things is a good description of heat. The more atoms you have per unit volume, jiggling faster, the more energy you have in heat form. So it's a function of speed and density.
So. Speed. Beyond a certain point, the atoms in a solid get so energetic, they can't keep structure, and they turn to liquid: the solid melts. And then, beyond even that, they fly apart, becoming a gas: the solid boils. Finally, even the gas breaks, as the atoms fall apart, and you get a plasma.
So, "absolute heat" will involve the elements moving at light speed, so it'll be be a plasma, I think. Even atoms couldn't exist in it. However, the denser something is, the more heat it can store, so, it'd have to be as dense as it can possibly be. A black hole. A singularity.
I think, then, "absolute heat" would give you a singularity with the bits inside it moving around at light speed. You couldn't get denser and you couldn't get faster. Except that there's nowhere in the singularity for the bits to move TO. So they'd have to move in synch, the whole singularity vibrating together.
That's the best I can do, anyway. Hope that helps you with your NaNoWriMo god of heat (am I right?) DewiMorgan ( talk) 21:29, 8 November 2008 (UTC)
Heat is electromagnetic radiation that is within a certain range of frequencies. If the radiation falls on a solid physical object, it makes the atoms at the surface of the object quiver faster (assuming the body was relatively cool). The increased quivering is passed on to atoms deeper in the body (heat conduction). In the case of a gas or liquid, the atoms are free to move, so they move faster and quiver faster (convection currents can also occur). Thus when an object is hot its atoms quiver or move rapidly. But heat itself is electromagnetic radiation. One more point is that quivering atoms radiate electromagnetic heat, and an object becomes warmer or cooler depending on the net income-outgo of radiant heat.
Hi,
I want to blast ca. 40,000 70bp (approx) sequences against a particular genome to see which of them are present in the genome. Does anyone know how I could go about this?
Many thanks
141.14.245.167 ( talk) 09:16, 6 November 2008 (UTC)
What is trubenising? —Preceding unsigned comment added by 203.153.35.130 ( talk) 12:22, 6 November 2008 (UTC)
One of the effects of a Lamictal overdose is seizures. Can someone please explain to me, in terms of like biology and pharmacology, how an anti-seizure medication can cause seizures? Thanks. —Preceding unsigned comment added by Jamlessness ( talk • contribs) 14:12, 6 November 2008 (UTC)
In a science-fiction alternate universe in which heat was a liquid of some kind that flowed from thing to thing, making it hot, was produced in exothermic reactions, etc, what would be the most plausible temperature for the liquid? If you insist, you can move this question to the humanity section. —Preceding unsigned comment added by 82.124.214.224 ( talk) 16:27, 6 November 2008 (UTC)
See Caloric theory. This is not as wacky idea as it may sound, this was once the prevailing scientific theory of heat. You will likely receive some good insight by reading that article... -- Jayron32. talk. contribs 17:52, 6 November 2008 (UTC)
One of the problems with these sorts of "what if just this one thing were different" questions is that it's very easy to get inconsistencies. Scientific theory is constructed to be self-consistent, and changing one rule may make others absurd (in fact proving that a theory leads to contradictions is a major way in which both math and science work). You have to specify what sort of situations you want the new fictional theory to hold, and which you can safely ignore, in order for there to be some semblance of consistency. (And even then, someone will likely find a hole related to something you ignored.) - With that in mind, lets look at heat and temperature. If you take 1L of water, and add a given amount of heat, you raise the temperature. If you take half a liter, you only need half the heat. So it's not the total amount of heat that determines the temperature, it's the "density." If you could "distill" pure liquid heat, the temperature would likely depend on how concentrated you could get it. How much more caloric does 100 L of boiling water have than 100 L of water at freezing? 1 L? 1 mL? 1 nL? The temperature-as-heat-density could vary by orders of magnitudes. You'd have to take into consideration heat capacity as well, though. A given amount of heat applied to 1 L of water doesn't raise the temperature to the same amount as it does when applied to the same amount, either by mass or by volume, of air, metal, or even oil. You'd also need to think about heat of vaporization and heat of fusion. You have to add a lot of heat to ice at 0 C to get it to melt, and once it's melted, the temperature is still at 0 C. One potential dodge is to claim temperature as being the density of "free" caloric, and claim that a certain amount of heat binds to or reacts with the material when it melts/freezes. This can also explain away the heat capacity issue, if you claim that a portion of the caloric doesn't go to increasing the temperature, but binds/reacts with the substance. The temperature of your "pure" caloric would then be related to the hypothesized density, as well and the fraction which gets bound up. (You could even postulate that pure heat has a temperature of near absolute zero, if in your fictional world you say that in pure form caloric "binds to" itself, thus resulting in no "free" caloric, and thus a low "free" caloric density (temperature).) - As mentioned above, once you remove yourself from reality, you can make practically any answer "correct". -- 128.104.112.72 ( talk) 19:19, 6 November 2008 (UTC)
Guess I was wrong about the NaNo God then :) DewiMorgan ( talk) 21:42, 8 November 2008 (UTC)
Not for medical advice or anything but I've been juicing 3 more or less mid sized apples and consuming the juice everyday for the last week or so. Is this amount large enough to induce iron toxicity related disorders? Leif edling ( talk) 17:38, 6 November 2008 (UTC)
It might also be worth pointing out that apples have a little bit of vitamin C, which enhances iron absorption. On that count, though, you might want to be more concerned about oranges. Not that apples and oranges are comparable in any way. SDY ( talk) 21:45, 7 November 2008 (UTC)
Too late for a word, I guess, but, referring to Tango 's objections, the words i opened my question with were meant as a sort of a disclaimer to say that if i took the opinion by people replying to my question and it harmed me , i would have none to blame but my foolish self. I don't understand (dont know, rather) why medical advice with proper disclaimers is not allowed on Wikipedia. Leif edling ( talk) 16:53, 12 November 2008 (UTC)
In proton proton chain, gamma ray is gradually released. But is there any fixed energy limit of this ray (i.e range of frequence) or is it same as the common gamma ray? 117.201.97.211 ( talk) 17:38, 6 November 2008 (UTC)
Two questions:
1. Why is shorter wavelength (i.e. bluer) light subject to more scattering in air than longer wavelengths?
2. Regarding why the sky is bluer overhead than at the horizon, I had a look at
this but I still don't understand why the increased scattering of light coming from the horizon makes it lighter.
Thanks,
Zain Ebrahim (
talk)
17:58, 6 November 2008 (UTC)
No, I'm not asking for medical advice. ;) This is just curiosity. There seems to be a large contradiction between the Hot sauce article, in which it's stated that the "heat" caused by Capsaicin is a harmless chemical reaction, and the Capsaicin Toxicity, it's now claimed to be potentially fatal. Is Capsaicin fatal in large amounts because of the body's reaction to it? -- Sarcasticninja ( talk) 18:44, 6 November 2008 (UTC)
Animal | Oral toxicity ( mg/ kg) | |
---|---|---|
TDLo | LD50 | |
Cat | 200 | |
Dog | 16 | 300 |
Mouse | 837 | |
Rat | 1265 |
What would a cat scan of a serial killer's brain look like? Meaning besides those who are not serial killers? -- Emyn ned ( talk) 21:30, 6 November 2008 (UTC)
I would not be at all surprised to find some structural differences between people whose behavior is normal and those whose behavior is grossly abnormal, like serial killers. WE know that brain damage can cause aberrant behavior, like those with bullet wounds to the brain or those who were the victims of psychosurgery. Similarly brain trauma from alcohol or the effects of Altzheimers, strokes, or abnormal intracranial pressure cause abnormal behavior.
Edison (
talk)
00:41, 7 November 2008 (UTC)
The difference is "psychological, not physical"? Well, physical differences in gross structure can manifest as psychological differences. Steve Pinker writes in The Blank Slate, "convicted murderers and other violent, antisocial people are likely to have a smaller and less active prefrontal cortex, the part of the brain that governs decision making and inhibits impulses." -- VectorField ( talk) 07:40, 13 November 2008 (UTC)
I know I read about this in wikipedia but for the life of me could not figure out how to search for the question or the answer in order to locate that page again. —Preceding unsigned comment added by 12.34.246.35 ( talk) 22:08, 6 November 2008 (UTC)
Can these breed together to produce healthy offspring? —Preceding unsigned comment added by 84.71.86.42 ( talk) 23:03, 6 November 2008 (UTC)
Is there any scientific reason why negative calorie foods can't be artificially produced? Or even just negative calorie additives — e.g. a flavorless substance that would burn calories, that could be, say, added to a cheeseburger to make the net calorie gain only a handful or so? Could one describe what characteristics such a substance would have on a chemical or structural level? It seems to me that such a product could have a variety of medical benefits for the very obese, especially those who are obese to the point that the possibility of an exercise regimen is severely diminished. This would not be the same thing as a substance that was simply zero calories, of course (which seems comparatively straightforward—anything that can't be digested, among other things!). -- 98.217.8.46 ( talk) 23:36, 6 November 2008 (UTC)
Related to a question asked before about chimp strength. They are much smaller than humans, but much stronger. Is this due to the density of their muscles? Are our muscles just bulky, but not very dense? I also read that humans have greater endurance than most other apes. Do animals with dense muscles have less endurance or is endurance due to other factors like lungs, blood flow, etc? 98.221.85.188 ( talk) 23:39, 6 November 2008 (UTC)
Which blue planet is colder is it Uranus and Neptune. Those two planets is identical, by blue colors, 4 times bigger than Earth, so would they have the same surface temp, average for both is -210 C or -350 F. Some say Uranus is colder, some say neptune is colder becasue uranus is hazier.-- FR W Y 23:54, 6 November 2008 (UTC)