Black Lives Matter |
- Black Lives Matter
- Can the magnetic field intensity fell to 0 in a reversal or excursion?
- How do computers keep track of time passing?
- Why do humans smile?
- What determines the color of lightning?
- How can new wireless standards improve bandwidth without changing frequency?
- Via what mechanism do free electrons in metal produce thermal radiation?
- How much of fire's kinetic energy is released via photons vs. thermal conduction?
- How does the immune system come into action, when ‘attacked’ by the Flu?
- Like humans contacted diseases like covid19, Ebola, swine flu etc. are there any diseases/viruses that humans have transmitted to other species?
- Why does the prion associated with Bovine Spongiform Encephalopathy cause vCreutzfeldt–Jakob disease, yet the prions associated with Scrapie in sheep and Chronic Wasting Disease in deer appear to noninfectious to humans? Shouldn't they also cause vCJD?
- If the immune system has a “memory” then why you get chickenpox once while you get the flu every year? Why can’t we get the flu once and never get it again just like chickenpox ?
- How much earth do you need to get the electrical ground?
- What sample problems would be near instantaneous to solve in Quantum Computers that a regular computer might need a potentially encumbering amount of time to equally process an answer?
- Why do virtual particles need to conserve charge but not energy?
- What is the pressure in the core of Jupiter?
- A quick question about stomach viruses?
| Posted: 02 Jun 2020 10:57 AM PDT Black lives matter. The moderation team at AskScience wants to express our outrage and sadness at the systemic racism and disproportionate violence experienced by the black community. This has gone on for too long, and it's time for lasting change. When 1 out of every 1,000 black men and boys in the United States can expect to be killed by the police, police violence is a public health crisis. Black men are about 2.5 times more likely to be killed by police than white men. In 2019, 1,099 people were killed by police in the US; 24% of those were black, even though only 13% of the population is black. When black Americans make up a disproportionate number of COVID-19 deaths, healthcare disparity is another public health crisis. In Michigan, black people make up 14% of the population and 40% of COVID-19 deaths. In Louisiana, black people are 33% of the population but account for 70% of COVID-19 deaths. Black Americans are more likely to work in essential jobs, with 38% of black workers employed in these industries compared with 29% of white workers. They are less likely to have access to health insurance and more likely to lack continuity in medical care. These disparities, these crises, are not coincidental. They are the result of systemic racism, economic inequality, and oppression. Change requires us to look inward, too. For over a decade, AskScience has been a forum where redditors can discuss scientific topics with scientists. Our panel includes hundreds of STEM professionals who volunteer their time, and we are proud to be an interface between scientists and non-scientists. We are fully committed to making science more accessible, and we hope it inspires people to consider careers in STEM. However, we must acknowledge that STEM suffers from a marked lack of diversity. In the US, black workers comprise 11% of the US workforce, but hold just 7% of STEM jobs that require a bachelor's degree or higher. Only 4% of medical doctors are black. Hispanic workers make up 16% of the US workforce, 6% of STEM jobs that require a bachelor's degree or higher, and 4.4% of medical doctors. Women make up 47% of the US workforce but 41% of STEM professionals with professional or doctoral degrees. And while we know around 3.5% of the US workforce identifies as LGBTQ+, their representation in STEM fields is largely unknown. These numbers become even more dismal in certain disciplines. For example, as of 2019, less than 4% of tenured or tenure-track geoscience positions are held by people of color, and fewer than 100 black women in the US have received PhDs in physics. This lack of diversity is unacceptable and actively harmful, both to people who are not afforded opportunities they deserve and to the STEM community as a whole. We cannot truly say we have cultivated the best and brightest in our respective fields when we are missing the voices of talented, brilliant people who are held back by widespread racism, sexism, and homophobia. It is up to us to confront these systemic injustices directly. We must all stand together against police violence, racism, and economic, social, and environmental inequality. STEM professional need to make sure underrepresented voices are heard, to listen, and to offer support. We must be the change. Sources:
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| Can the magnetic field intensity fell to 0 in a reversal or excursion? Posted: 06 Jun 2020 05:11 AM PDT |
| How do computers keep track of time passing? Posted: 05 Jun 2020 12:45 PM PDT It just seems to me (from my two intro-level Java classes in undergrad) that keeping track of time should be difficult for a computer, but it's one of the most basic things they do and they don't need to be on the internet to do it. How do they pull that off? [link] [comments]  |
| Posted: 05 Jun 2020 03:35 PM PDT The Human Compulsion To Smile I'll keep this short. In certain other animals, the baring of teeth symbolises aggression and a warning to cease your current behaviour or not come any closer. My question is, why do humans treat this act as a symbol of friendliness and compassion, and is this behaviour exclusive to humans or do other primates share this behaviour? Thanks in advance. [link] [comments]  |
| What determines the color of lightning? Posted: 06 Jun 2020 06:06 AM PDT I've seen lightning come in a wide variety of colors and was wondering what caused the different wavelengths to be emitted and why there are differences. Since I'm kind of uncertain a quick explanation of how lightning occurs would also be appreciated! [link] [comments]  |
| How can new wireless standards improve bandwidth without changing frequency? Posted: 05 Jun 2020 02:33 PM PDT |
| Via what mechanism do free electrons in metal produce thermal radiation? Posted: 05 Jun 2020 11:37 AM PDT Since they are free, electrons in metal don't have an orbital to return to. So how do they lose their excess energy? Is it via bremsstrahlung with collisions with other electrons or being stopped by metal ions at the surface? Or is there another mechanism that free electrons can use to de-excite and release light? [link] [comments]  |
| How much of fire's kinetic energy is released via photons vs. thermal conduction? Posted: 06 Jun 2020 12:15 AM PDT I'm trying to build a tabletop RPG in the likes of D&D and I'm making a spell, "Darkness." I'm trying to go about it a little scientifically (as scientifically as you can get with magic) and I want to state that the spell simply "deletes" photons entering a certain area, therefore making it dark. I figured that the area would be much cooler than the surrounding area since solar radiation is mostly gone, like being in the shade of a tree vs. directly under the sun, but what about fire? If I brought a torch into this area how much cooler would it get? Is the electromagnetic radiation an insignificantly small part of the heat energy that it would feel pretty much the same, or would it feel noticably cooler? [link] [comments]  |
| How does the immune system come into action, when ‘attacked’ by the Flu? Posted: 06 Jun 2020 03:57 AM PDT |
| Posted: 06 Jun 2020 12:55 AM PDT |
| Posted: 06 Jun 2020 06:52 AM PDT |
| Posted: 05 Jun 2020 05:48 PM PDT |
| How much earth do you need to get the electrical ground? Posted: 05 Jun 2020 02:14 PM PDT In volume. One bucket of earth is clearly not enough to constitute the electrical "ground". Whole planet is clearly enough. So at how much earth volume the actual "electrical ground" happens and what it depends on? [link] [comments]  |
| Posted: 05 Jun 2020 09:29 PM PDT |
| Why do virtual particles need to conserve charge but not energy? Posted: 05 Jun 2020 08:48 PM PDT From what I understand, virtual particles don't have to conserve energy (but can "borrow" energy to give it back later), but do have to conserve charge (so, for instance, have to be created in electron/positron pairs). Why can't they borrow charge for their brief existence as well? [link] [comments]  |
| What is the pressure in the core of Jupiter? Posted: 05 Jun 2020 01:06 PM PDT |
| A quick question about stomach viruses? Posted: 05 Jun 2020 02:39 PM PDT I hope this doesn't violate rule 1, but my question is essentially about the life of a virus on a surface. I know most articles say most viruses typically only last a few hours to even a few weeks on a surface, but my question is about what happens after that time. Lets say a few months have passed, would that surface still be able to get you sick or would the viruses be "dead and gone" by then and not likely to get you sick again? [link] [comments]  |
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