Did Marie Curie ever wonder if the radiation she was studying was dangerous? |
- Did Marie Curie ever wonder if the radiation she was studying was dangerous?
- Do we know when, in human evolution, menstruation appeared?
- Is there an animal that primarily subsists on eating members of its own species/cannibalism?
- How long is the LHC at CERN on for at a time? How long does it take before a test will be done?
- Although the main driver of our seasons is the Earth's tilt, do the aphelion and perihelion have any calculable effect?
- Theoretically, can you gain energy through nuclear fusion then gain energy through fission of the same material?
- Are there any species where the parents contribute non-equal numbers of chromosomes to their offspring, or does it have to be the same number from each?
- how does the body fight infections on its surface parts?
- Have atoms ever been observed to quantum tunnel out of a weak chemical bond (Such as hydrogen bonds)?
- How was the Japanese Archipelago formed?
- How the HIV expanded in world? What was the firsts causes to HIV being globalized? And where was the first evidence in the history of the virus?
- In your gut how do Dandritic cells differenriate between commensal and pathogenic bacteria?
- How is it that we so reliably have a new influenza vaccine ready each year? What's our process?
- What is the relevance of the Poincaire group and the SU1xSU2xSU3 group in Quantum Field Theories?
| Did Marie Curie ever wonder if the radiation she was studying was dangerous? Posted: 04 Jul 2022 12:13 PM PDT |
| Do we know when, in human evolution, menstruation appeared? Posted: 04 Jul 2022 06:57 AM PDT I've read about the different evolutionary rationales for periods, but I'm wondering when it became a thing. Do we have any idea? Also, is there any evidence whether early hominins like Australopithecus or Paranthropus menstruated? [link] [comments] |
| Is there an animal that primarily subsists on eating members of its own species/cannibalism? Posted: 04 Jul 2022 07:17 AM PDT |
| How long is the LHC at CERN on for at a time? How long does it take before a test will be done? Posted: 04 Jul 2022 07:58 PM PDT Does it take a long time to actually charge up? Somebody told me it'll take months before anything actually happens after they turn it on today, but I wanted to ask here if that's how it works. [link] [comments] |
| Posted: 04 Jul 2022 07:29 PM PDT I understand that exposing a larger chunk of a hemisphere to the sun has an incredible effect on the amount of the sun's energy which is able to impact the planet, I have to assume that the elliptical nature of our orbit has some effect as well. Is it at least calculable? Naturally the reason I'm asking is because the Earth reached aphelion today, meaning we are at the furthest point from the Sun in this orbit, meanwhile we are also very close to the first day of summer, when our tilt puts the northern hemisphere in full view of the Sun. [link] [comments] |
| Posted: 04 Jul 2022 02:57 PM PDT |
| Posted: 04 Jul 2022 09:21 PM PDT |
| how does the body fight infections on its surface parts? Posted: 04 Jul 2022 09:17 AM PDT The back of your throat, or on your tongue, stuff like that. Does the common cold have to die on its own on the surface of my throat? I had my tonsils removed. Does bad stuff just live there until I get too stressed and I catch an infection I was always carrying? Are there tiny holes where my blood can get to the surface? [link] [comments] |
| Posted: 04 Jul 2022 11:25 AM PDT Bonds are sort of like potential energy wells, so that means they can be quantum tunneled out of, right? I've never heard of this being reported though, so is it just very rare or is it not possible. If not possible, why do you think/know so? [link] [comments] |
| How was the Japanese Archipelago formed? Posted: 04 Jul 2022 10:07 AM PDT I've always though Japan was formed as volcanic islands along the subduction zone of the Asian Plate and Pacific Plate. However, I've recently learned that Japan used to be connected to the mainland and the Sea of Japan was formed relatively recently, around 10 million years ago I think, as Japan was pulled away. But I could find any answer (that I fully understood) as to why this happened. What's going on there? [link] [comments] |
| Posted: 04 Jul 2022 06:31 PM PDT |
| In your gut how do Dandritic cells differenriate between commensal and pathogenic bacteria? Posted: 04 Jul 2022 12:28 AM PDT I have been wondering this, I mean can they differentiate. Dandritic cells penetrate their membrane extensions through epithelial cells of gut and react immediately if the sense a pathogenic bacteria, does it react the same way if it senses commensal bacteria?? [link] [comments] |
| How is it that we so reliably have a new influenza vaccine ready each year? What's our process? Posted: 04 Jul 2022 02:54 AM PDT I guess firstly I wanna know a few logistical things: How do we discover what the new strand of the flu is? How long does it take to develop a vaccine for it? Why is this faster than other vaccines? How do we verify that it works and is safe for patients in less than a year? How effective is the vaccine, and if it's really effective, how is it made to be so effective year after year? I feel like there's a "How to Make a Flu Shot This Year" handbook out there. Are there any other viruses out there that we update our vaccines for so regularly? Thanks in advance! [link] [comments] |
| What is the relevance of the Poincaire group and the SU1xSU2xSU3 group in Quantum Field Theories? Posted: 04 Jul 2022 06:47 AM PDT What I know is that the Poincaire group is characterised by, like, 9-10 commutation relations. And every field, before quantisation, is a vector space on which there must be representations of the Poincaire group defined as operators. For instance, the operator exd/dy-y/d/dx is a representation of a member belonging to this group, and this operator acts on the vector space of fields, causing to rotate them. ed/dx is another member of this group. Another member would be the exponentiation of Pauli matrices. Those don't operate on infinite dimensional fields, but rather on 2- component objects. Another member of this group could be 4x4 Lorentz transformations, which operate on 4 vectors. Bottom line : every field that we quantise must have operators of this group defined on them. About SU1xSU2xSU3, I know that these are used as gauge groups. But idk much more than that. Have I understood them right? And is there any connection between what these two groups have to do with physics? Or are just important but independent ideas? [link] [comments] |
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