Why are COVID serology tests not recommended as a measure to estimate protection in vaccinated individuals? | AskScience Blog

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Tuesday, July 20, 2021

Why are COVID serology tests not recommended as a measure to estimate protection in vaccinated individuals?

Why are COVID serology tests not recommended as a measure to estimate protection in vaccinated individuals?


Why are COVID serology tests not recommended as a measure to estimate protection in vaccinated individuals?

Posted: 20 Jul 2021 02:50 AM PDT

Presumably, if I have a lot antibodies for a virus floating around - I'd be better prepared (on average) to avoid infection, won't I?

submitted by /u/BestBoyCoop
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Distance contraction in non-relativistic spacetime? I suddenly feel so confused

Posted: 20 Jul 2021 01:44 AM PDT

  • A and B travel 100km together.
  • For someone on the ground, A speed is 10km/h, B speed is 20km/h.
  • That means from A point of view, B speed is 10km/h.
  • In non-relativistic spacetime, the amount of time for B to finish the journey must be the same for both A and for someone on the ground, aka 5 hours.
  • Because speed is distance divided by time, doesn't that mean, from A point of view, B has traveled only 50km instead of 100? This conclusion feels wrong, but I don't know where.

Thanks.

submitted by /u/1954isthebest
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If lipofection can introduce DNA material into a mammalian cell in vitro, is this possible to do in a live animal or human? Why or why not?

Posted: 20 Jul 2021 04:15 AM PDT

Why does a 1.5 C increase in global temperature seem to translate to a 10 C increase in temperature in every country?

Posted: 19 Jul 2021 09:42 PM PDT

Climate science is definitely not my field, I'm just really confused about it. Are there areas of the world that barely see any change in temperature/somehow become colder and that's why it's such a seemingly low average increase with what feels like disproportionate observed effects? Because a 1.5 C increase versus summer temperatures going from 15 C to 30 C seems like a weird mismatch.

submitted by /u/Redqueenhypo
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Is there a "Lyman" and "Balmer" series for different elements other than Hydrogen?

Posted: 20 Jul 2021 01:14 AM PDT

I'm trying to find the emission spectra of different elements categorized by jumps from all higher energy levels back down to to the n 1 and n 2 levels; a sort of "Lyman" and "Balmer" series of any given element.

I'm trying to determine if there are any harmonic considerations between the emission spectra, using the two "Lyman" and "Balmer" categories to determine a sort of "fundamental" for each elemental consideration.

submitted by /u/MelloCello7
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How would the images on the Golden Record (on Voyager 1) be displayed?

Posted: 19 Jul 2021 01:06 PM PDT

Is there like some sort of projector that lights up or something? I have no idea how the images will appear. I guess I understand how to start it, however what happens after?

submitted by /u/phatrhat
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How can taxonomists create a species after finding just one fossil?

Posted: 19 Jul 2021 08:34 AM PDT

I was looking at species in the Homo genus and found some like cepranensis, longi, and tsaichangensis which only had one fossil found. Why are those considered different species instead of anomalies?

submitted by /u/_Princess__Consuela_
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What do the galactic orbits of the Voyager space probes look like?

Posted: 19 Jul 2021 04:46 AM PDT

So I don't know if I'm just bad at googling or if there's little information about this subject, but how different are the Voyagers' orbits from the sun's orbit around the center of the Milky Way?

Now, I know that galactic orbits are a bit more complicated than solar system orbits (more wobble up and down etc), but the basics still more or less apply, right? Most articles I've read that go in this direction act like Voyager will be moving away from the sun at a constant rate basically forever, which is just not how orbits work from what I know.

So basically my question is, what are the periapsides and apoapsides of the galactic orbits of the Voyager space probes?

submitted by /u/Toonfish_
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How far does a “Coastal City” have to be from the beach so it isn’t affected by the expected rising sea-level?

Posted: 19 Jul 2021 11:55 AM PDT

I assume direct coastal cities will be impacted in some way but what I don't understand is how far inward a city has to be to be considered a "safe distance"

submitted by /u/TheSilentPhilosopher
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Could entropy of closed system decrease owing to gravity?

Posted: 19 Jul 2021 05:19 AM PDT

Second law (of thermodynamics) states that entropy of closed system never decreases.
Let's imagine you have a closed Universe where you distribute the mass completely randomly and stationary (for simplicity of imagining this example). So entropy is the maximum it can be, right? Complete random distribution of matter should equal to highest entropy (I'm just an amateur learner).

Now let the time pass. Gravitational force will eventually start attracting certain clusters of matter together (because random distribution of matter ensures that some local place has more matter than other). As chunks of matter collapse together and form some objects (probably also start to orbit each other). It's more ordered system now, albeit still put together only by gravity based on its initial randomness. Did entropy of this system decreased?

submitted by /u/justdvl
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Are banner-towing airplanes more susceptible to lightning?

Posted: 18 Jul 2021 07:44 PM PDT

Watching an airplane tow a humongous banner recently, I wondered if the banner built up a static charge from being pulled through the air, and would attract lightning. I also have a related question: wouldn't a banner-towing plane ground itself when grabbing the yoke of a banner lying on the ground? Does the banner being drug across the ground generate a charge?

It just seems to me that a banner-towing plane would be a lightning magnet for any of these reasons.

submitted by /u/TrogdorLLC
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