Recent comments in /f/askscience
[deleted] t1_j30lssd wrote
Weed_O_Whirler t1_j30kwx0 wrote
Reply to comment by train1111818 in How fast would a body fall to earth if there was no atmosphere to stop it from accelerating past a terminal velocity? by straubzilla
That's true. You will continue to accelerate until hitting the surface. And the speed you'll be accelerated to is the escape velocity. And it's because your starting and end states are the same, just in reverse.
When calculating escape velocity you're saying "how fast do I need to launch myself from the surface of the planet, so that I don't come to rest until infinity?" But for this question you're saying "if I'm at rest at infinity, what speed will I have when I hit the surface of the planet?" Since the start and end points are the same, the speeds are also the same.
train1111818 t1_j30i7b1 wrote
Reply to comment by Weed_O_Whirler in How fast would a body fall to earth if there was no atmosphere to stop it from accelerating past a terminal velocity? by straubzilla
There is no way I could trade math equations with you; but if I’m falling directly at the planets core; how is escape velocity relevant? I should continue to accelerate- ever faster as the separation decreases, until the planet’s surface stops me.
[deleted] OP t1_j30hyog wrote
Reply to comment by SubstantialExtent819 in How does dish soap eliminate bacteria? by [deleted]
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kappusha OP t1_j30g0lj wrote
Reply to comment by SignalDifficult5061 in How many times mRNA transcript can be translated before it's degraded or something like that? by kappusha
>That being said, the paper below suggests one to millions per generation (Figure S1 supplemental), which they define as a minimum of about 21.5 minutes (varies substantially).
Wait does it mean 10^6/(21,5*60)≈ 775 translations per second for one mRNA in e.coli on average ? Or am I confused?
[deleted] t1_j30flw2 wrote
Reply to comment by [deleted] in How fast would a body fall to earth if there was no atmosphere to stop it from accelerating past a terminal velocity? by straubzilla
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fer_sure t1_j30f8lo wrote
Reply to comment by Leading_Study_876 in How is stereo information encoded into a vinyl record? by caedin8
> the low frequency stuff should be mono, so you don’t overload the bass drivers or amps on one channel, and run the risk of hitting the end stops on bass drivers at high volume, which sounds bad and can damage the speakers.
So, has anybody ever done that deliberately? Like encoding a signal that can destroy a record player or speakers? Is there a record of doom out there?!
[deleted] t1_j30esnx wrote
Reply to comment by [deleted] in How fast would a body fall to earth if there was no atmosphere to stop it from accelerating past a terminal velocity? by straubzilla
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Old_Week t1_j30epkv wrote
Reply to comment by Ausoge in How does dish soap eliminate bacteria? by [deleted]
I would’ve thought that if bi-lipid layer was normal anywhere, it would be Australia. Everything is reversed there since you’re all upside down, no?
Ausoge t1_j30dz0p wrote
Reply to comment by Old_Week in How does dish soap eliminate bacteria? by [deleted]
Australia. And I've just googled it, and I can't find it referred to as bilipid layer anywhere, so my best explanation is a little brain-fart that somehow mixed up the phrasing in my head and got stuck that way lol.
Thanks for catching it!
[deleted] t1_j30do5t wrote
Reply to comment by [deleted] in How fast would a body fall to earth if there was no atmosphere to stop it from accelerating past a terminal velocity? by straubzilla
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[deleted] t1_j30d3ld wrote
Reply to comment by [deleted] in How fast would a body fall to earth if there was no atmosphere to stop it from accelerating past a terminal velocity? by straubzilla
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[deleted] t1_j30by4m wrote
Reply to comment by [deleted] in How fast would a body fall to earth if there was no atmosphere to stop it from accelerating past a terminal velocity? by straubzilla
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[deleted] t1_j30blpy wrote
Reply to comment by [deleted] in How fast would a body fall to earth if there was no atmosphere to stop it from accelerating past a terminal velocity? by straubzilla
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[deleted] t1_j309ybe wrote
Reply to comment by Weed_O_Whirler in How fast would a body fall to earth if there was no atmosphere to stop it from accelerating past a terminal velocity? by straubzilla
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Old_Week t1_j309vsv wrote
Reply to comment by Ausoge in How does dish soap eliminate bacteria? by [deleted]
Do you mind if I ask where you’re from? This is the first time I’ve heard bi-lipid layer instead of lipid bilayer.
[deleted] t1_j309hdx wrote
Reply to comment by [deleted] in How is stereo information encoded into a vinyl record? by caedin8
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daywalkker t1_j3042ig wrote
I can give you a bit of a more frank, less technical and comprehensive answer that may help. If this helps add to the other answers, great. If not, ignore me.
Adjuvants work locally as well as systemically, but not both in equal measure. They are especially active at the site of the injection. A vital part of the desired vaccine-induced immune response relies on the adjuvant and vaccine antigens being in relatively high concentrations in the same place in the body.
If you just injected a person with an adjuvant only and they already had the virus on-board, you may see a very mild increase in overall immune response in the form of a slight elevation in body temp and very, very mild systemic inflammation, but it wouldn't be nearly enough to affect the course of the infection. You would also have a local inflammatory response at the site of the injection but without the vaccine along with it, you just get a sore arm with no benefit.
The adjuvant triggers local inflammation which calls white blood cells to come running, or rolling and oozing as the case may be. These white blood cells (macrophages/dendritic cells/Antigen presenting cells) are stimulated by the adjuvant to grab the vaccine antigen particles that are highly concentrated in that area and (long story short) present those viral particles to the immune system so they can pump out new lymphocytes (another kind of white blood cell) to target and kill specifically the strain of virus that was in the vaccine.
I don't know if that clarifies or obfuscates things!
Edit: typos, clarification
[deleted] t1_j301vg4 wrote
Leading_Study_876 t1_j300rzz wrote
Reply to comment by [deleted] in How is stereo information encoded into a vinyl record? by caedin8
No, just left and right. Believe me, I just retired from working 35 years in the HiFi (turntable manufacturing) business. But - in most music recorded by microphone, bass is pretty much mono. The wavelength is so long that the signal picked up by the left and right microphones will be almost identical. That’s why you can put a subwoofer almost anywhere in a room and it won’t make much difference.
If the left and right channels were cut IN PHASE then this common movement would translate to a pure vertical movement of the stylus. This is bad news, as it can make the stylus lose contact with the record surface. So one channel is phase reversed (180 degrees) so that the common signal then translates to HORIZONTAL movement. Only the difference between L & R makes the stylus move up and down.
Note: I had previously forgotten this phase reversal detail, but it came back to me, and so I have now edited this post to correct the above paragraph. This other Reddit post on the subject is very informative!
It is of course possible for an engineer to put a full bass track on one channel, but there’s no real sense in doing that. If they want to make it seem like the bass player is standing on one side, they only need to put the mid and high frequency harmonics over there but the low frequency stuff should be mono, so you don’t overload the bass drivers or amps on one channel, and run the risk of hitting the end stops on bass drivers at high volume, which sounds bad and can damage the speakers.
[deleted] OP t1_j2zy3i3 wrote
Reply to comment by SecondGuy in How does dish soap eliminate bacteria? by [deleted]
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menooby OP t1_j2zxr8y wrote
Reply to comment by Lyndeead in Do all humans have the same antigens? Or are the antigens in the body the same for everybody? by menooby
Sorry I realise I forgot to add an important bit. Do we all have the same self antigens?
[deleted] t1_j2zxqpn wrote
Reply to comment by doc_nano in Do all humans have the same antigens? Or are the antigens in the body the same for everybody? by menooby
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Krail t1_j2zwxxy wrote
Reply to comment by IgotthatBNAD in How does dish soap eliminate bacteria? by [deleted]
Your outermost layer of skin cells is relatively safe from this because it's made to be less reactive and protect from outside threats like this (My detailed anatomy knowledge is fuzzy, but my understanding is that you're basically protected by a layer of keratin, which soap does not act on), but yes it does break down animal cells, and this is one of the main reasons that soap is toxic to ingest.
zzing t1_j30mt28 wrote
Reply to comment by Ausoge in How does dish soap eliminate bacteria? by [deleted]
>bi-lipid layer
You might have googled the wrong place, google scholar has it: https://scholar.google.ca/scholar?hl=en&as_sdt=0%2C5&q=bi-lipid+layer&btnG=