Does Rabies virus spread from the wound to other parts of the body immediately?

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• Does Rabies virus spread from the wound to other parts of the body immediately?
• Are moths negatively affected by streetlights?
• Why is the symmetry of fundamental forces temperature dependent?
• Why do d and especially f orbitals show poor shielding effect?
• I have heard/read from a few sources that viral load is one of the factors influencing severity of the infection in Covid-19. How far is this true?
• Can mRNA vaccines be used to produce antibodies directly?
• What caused the jump in atmospheric oxygen levels in the Ediacaran Period (635 Million years ago)?
• What prevents specific colors of light from exciting specific cones in our eyes?
• Barr Effect in binary star systems: what does the longitude of periastron being be between 0 and 90 degrees actually say about orientation of these binary systems?

Does Rabies virus spread from the wound to other parts of the body immediately? Posted: 23 May 2021 03:45 AM PDT Does it take time to move in our nervous system? If yes, does a vaccine shot hinder their movement? submitted by /u/Heavans_Door [link] [comments]

Are moths negatively affected by streetlights? Posted: 22 May 2021 10:23 PM PDT submitted by /u/Mr-Fleshcage [link] [comments]

Why is the symmetry of fundamental forces temperature dependent? Posted: 23 May 2021 05:21 AM PDT If i understand this right, above a certain temperature there is a symmetry between the electromagnetic and weak nuclear forces, meaning they operate identically and are for all intents and purposes a single force. Now, really this is just a specific example of a larger concept so i guess trying to understand why temperature is even a factor in any symmetry, or "why do symmetries in general break based on temperature?". I'm not sure if specificity is my friend here. I'm just trying to form some sort of intuition so hopefully this doesn't require getting too technical. If i could get some explanation for how these temperature sensitive symmetries relate to Noether's theorem that'd be the cherry on top. I know in a general sense that physical symmetries correlate to specific conservation laws (or the conservation is the expression of the symmetry? I'm not sure what's the correct way to parse this). so does that mean that above the electroweak symmetry temperature there was some property that was conserved that is no longer a conserved property in our colder reality? if so, I'd love to know what it is if it's articulable. on a more general note, any resource that has a concise listing of symmetries and their corresponding conserved properties would be very much appreciated. preferably something neater than some dense dissertation where I'll get lost in the weeds XD submitted by /u/SymphoDeProggy [link] [comments]

Why do d and especially f orbitals show poor shielding effect? Posted: 23 May 2021 06:00 AM PDT I guess it's somehow connected to the character of electron but I just can't find the connection. Why s and p orbitals have good shielding effect but d and f don't? submitted by /u/Crafty_Cell_4395 [link] [comments]

I have heard/read from a few sources that viral load is one of the factors influencing severity of the infection in Covid-19. How far is this true? Posted: 22 May 2021 09:10 AM PDT For example, if person A gets a higher viral dose than person B, is his/her infection more likely to be more severe and has there been any research/studies conducted on this? Also, I'd like to know if there's a minimum viral dose that is needed for symptomatic infection, and if this dose varies from individual to individual. The new (mutated) strains of Covid-19 are said to be more infectious- does this imply that a smaller viral dose is required to cause symptomatic infection? submitted by /u/Kuchikitaicho [link] [comments]

Can mRNA vaccines be used to produce antibodies directly? Posted: 23 May 2021 05:55 AM PDT I found reading through https://berthub.eu/articles/posts/reverse-engineering-source-code-of-the-biontech-pfizer-vaccine/ incredible fascinating and started to wonder where things could go from here with this kind of technology. Can we, instead of ordering cells to create the spike proteins and triggering an immune response, use this technolgy to order cells to create antibodies directly? My thinking is, creating a vaccine that does not cause any side effects you normally would get by an immune response. I'm just curious if it is possible to use it for such more complex things to build like antibodies, or if it is even feasable. Or is this a stupid question given the immune system is way more complex than just antibodies and trying to build the immune response rather than triggering it is something that is beyond our reach in the near future. Or maybe unfeasable ever given the complexity? What are the limits of what we can do with that and were things could go from here? submitted by /u/Masaca [link] [comments]

What caused the jump in atmospheric oxygen levels in the Ediacaran Period (635 Million years ago)? Posted: 22 May 2021 06:46 AM PDT The Great Oxidation Event (2.4 -2 billion years ago) gets a lot of attention and it seems like the leading hypothesis for what caused it was the proliferation of early photosynthetic life. However, (as far as I can tell) the levels of atmospheric oxygen were still relatively low until after the Cryogenian glaciations. So, in short, what caused this later rise in atmospheric oxygen ? submitted by /u/sully_underwater [link] [comments]

What prevents specific colors of light from exciting specific cones in our eyes? Posted: 22 May 2021 02:17 AM PDT Photons switch up photopsins in our cones from their cis state to their trans state, but why is light with specific wavelengths required for different types of cones? Is it the shape of the cones that prevents all but one range of wavelengths from reaching the photopsins? Or is it the energy states of the electrons in the specific photopsins that require specific wavelengths for quantum jumps? Or maybe even pigments in our cones that absorb specific wavelengths? submitted by /u/SaftigMo [link] [comments]

Barr Effect in binary star systems: what does the longitude of periastron being be between 0 and 90 degrees actually say about orientation of these binary systems? Posted: 21 May 2021 07:56 PM PDT I was answering a question about the Barr Effect on another sub, and I realized I can't conceptualize what the effect translates to for us as observers. I'll link the original post in a reply. My understanding so far is that the Barr Effect was an observation that the longitude of periastron in spectroscopic binary systems was biased to be between 0-90 degrees. I understand literally what it is, I think: the angle in the direction of motion between the ascending node and the point where the star in question is closest to the focus is biased to be between 0-90, but what does that translate to from our view point? I was originally thinking it meant that the periastron of spectroscopically observed binary systems was biased to be further away from us, but I'm really not sure now. My current explanation that I'm not sure is correct: Since the Barr Effect is that most commonly observed angles are 0°-90°, it means that the point at which the stars are closest to each other tends to be further away from us, and also has a bias to be further away in one quarter of the orbit (rather than one half). The angle is defined in relation to the motion of travel, so 90° isn't the same as 270°. Picture a clock that you're looking at directly. Between the 12 and the 3 is 0-90°. Now tilt that clock away from you so that the 12 is further away than the 6. The Barr Effect says that the part where the stars are closest to the focus is likely to be in that 12- to 3-o'clock range. submitted by /u/EliannaRys [link] [comments]

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