Recent comments in /f/askscience
SignificantYou3240 t1_jdugit2 wrote
This is not really the case with me. When I sleep on my arm, I can pick it up with my other arm and it’s hella heavy. I used to drop it onto my face because it was crazy how it would land so forking hard.
But motor function came back before the tingly feeling left. I suspect that the tingly feeling, while it feels crazy, it’s not all your neurons, if it were it would hurt a lot more, like having the limb shredded or something. So maybe your neurons are at 80% but it feels like zero
[deleted] t1_jdug4zs wrote
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[deleted] OP t1_jdufn0b wrote
hal2k1 t1_jdufmsp wrote
Reply to comment by michaelrohansmith in Why are nonhuman erect bipedal animals so rare? by violetmammal4694
There are only a hundred or so species of kangaroos, wallaroos, wallabies and kangaroo rats but, if you count birds capable of flying as well as walking, there are many thousands of species of bipedal birds.
[deleted] OP t1_jdufgvu wrote
Reply to comment by bazza_ryder in Does living in an airplane flight path, near an airport, pose a health risk? What happens to the lead from the jets fuel? by [deleted]
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[deleted] t1_jduf9mi wrote
[deleted] OP t1_jduf8w3 wrote
Reply to comment by [deleted] in Does living in an airplane flight path, near an airport, pose a health risk? What happens to the lead from the jets fuel? by [deleted]
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Mikesturant t1_jduf5j1 wrote
Reply to comment by Fenrisvitnir in Can you entangle more than two particles? Can entanglement be produced on a macroscopic scale to observe new physical interactions? by and-no-and-then
I'm also not sure how to ask.
The entanglement is data or information? Yes?
[deleted] OP t1_jduf22b wrote
Reply to comment by KimberelyG in Can elephants canter or gallop? by [deleted]
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Fenrisvitnir t1_jduev91 wrote
Reply to comment by Mikesturant in Can you entangle more than two particles? Can entanglement be produced on a macroscopic scale to observe new physical interactions? by and-no-and-then
>How many entangled particle groups can function independently of each other while still grouped.
Not sure what you mean here - you can in theory cross-entangle entangled groups of particles, but I doubt that is what you are really asking.
[deleted] t1_jduescd wrote
Reply to comment by BeneficialWarrant in Why does mild compression lead to paresthesia but not paralysis? by Hola3008
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michaelrohansmith t1_jduelsk wrote
Reply to comment by hal2k1 in Why are nonhuman erect bipedal animals so rare? by violetmammal4694
Well yeah its humans then kangaroos but thinking about it there are a few land based birds like the emu which have also perfected bipedal locomotion, even if they are smaller in numbers.
Fenrisvitnir t1_jduel01 wrote
Reply to Can you entangle more than two particles? Can entanglement be produced on a macroscopic scale to observe new physical interactions? by and-no-and-then
>Where two particles interact regardless of the physical distance between them.
Technically this is wrong - the two particles are pair-linked by state no matter the distance between them. They don't send information back and forth. We don't know the mechanism for preserving the entanglement.
>Entanglement has also been described as a measurement of one particle that decides the properties of another because the interaction between them determines their shared properties that must be conserved.
This is closer because at the most fundamental level is when two particles are entangled, the shared state constraints between them are preserved until measurement of either or both (and possibly after). But the measurement simultaneously collapses the state of both particles, potentially even when done to the original system state before the particles left it. However, again, we don't know the underlying mechanism (is it non-local binding? pilot waves? collapse of probabilities?).
The wrong way to think about entanglement is a pair of particles that send info back and forth between them to make sure everything checks out - they share state, they don't exchange it. This is why parallel worlds, pilot waves, etc. are theories about how the state is shared are more accurate because they attempt to preserve the state constraints globally. Nothing about entanglement moves faster than the speed of light.
And to answer your question, yes, entanglement does appear to be transitive to other particles under the right conditions, so you can chain state constraints.
This assumes that entanglement is correctly understood by experiment today, which is still not entirely clear, even though the physics community has settled on Copenhagen for the most part.
ebinWaitee t1_jduedxq wrote
Reply to comment by [deleted] in Why are nonhuman erect bipedal animals so rare? by violetmammal4694
> all dinosaurs were bipedal
Pretty sure there were tons of dinosaur species that weren't. Triceratops for example
Edit: wow, mind blown that they've all believed to have a common ancestor that was bipedal!
Edit2: hmm, turns out that's probably not the case after all
[deleted] OP t1_jdue39p wrote
[deleted] t1_jdudzb7 wrote
Reply to comment by envybelmont in Why are nonhuman erect bipedal animals so rare? by violetmammal4694
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TheEastStudentCenter t1_jdudvkj wrote
When a body part is compressed, the pressure on the sensory nerves that carry information about touch, temperature, and pain can cause temporary disruption of their function. This disruption can lead to paresthesia, which is an abnormal sensation like tingling, numbness, or burning. In more severe cases, the compression can cause anesthesia, which is a complete loss of sensation in the affected area.
On the other hand, motor neurons that control voluntary movement are less affected by compression because they are less sensitive to pressure. These neurons are located deeper in the body and are more protected by other tissues like muscle and bone. Additionally, motor neurons do not rely on sensory information to generate movement. Instead, they receive signals from the brain and spinal cord that instruct them to contract or relax muscles.
Therefore, even if the sensory neurons are temporarily affected by compression, the motor neurons can still receive signals from the brain and spinal cord and initiate voluntary movements. However, if the compression is severe or prolonged, it can eventually affect the motor neurons as well, leading to paralysis or weakness.
[deleted] OP t1_jdudm91 wrote
Reply to comment by [deleted] in Can elephants canter or gallop? by [deleted]
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SWithnell t1_jdudkwf wrote
The conductors supplying the plates would also be at a million volts, so would also need insulating with something of huge dielectric strength. You also need to consider the discharge characteristics of a capacitor - almost the inverse of a battery, so the energy would need to be exploited in a fundamentally different way.
hal2k1 t1_jdudaqk wrote
Reply to comment by envybelmont in Why are nonhuman erect bipedal animals so rare? by violetmammal4694
There are somewhere between 49 and 53 million kangaroos in Australia. Far more kangaroos than people.
Excluding humans I don't know how many great apes there are.
DragonZnork t1_jdud88p wrote
Reply to Can you entangle more than two particles? Can entanglement be produced on a macroscopic scale to observe new physical interactions? by and-no-and-then
Yes, you can entangle more than two particles or qubits, it has been done many times already. However, it becomes increasingly difficult with higher numbers of objects. Entangling particles or qubits "by hand" up to macroscopic scales is unlikely, at least for now because it's a huge number of things.
On the other hand, superconductivity is an entangled state in some sense, and definitely reaches macroscopic scales.
[deleted] t1_jdud7ct wrote
Reply to comment by [deleted] in Is there a quantifiable benefit to cooking food? by Ydlmgtwtily
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[deleted] t1_jdud5lw wrote
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Cheetahs_never_win t1_jdud4a5 wrote
Reply to If there was a hole in the ISS, would everyone get sucked out like in Sci-Fi movies? by hobbitlover
Your car tire is around 35 psig, such is about 20 psig higher than atmosphere.
A puncture in your car tire is more eventful than a hull puncture, ignoring your imminent suffocating, unless your hull comes extra pressurized.
[deleted] OP t1_jdugj7o wrote
Reply to Can elephants canter or gallop? by [deleted]
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