Is it possible to have steam hot enough to start a fire? |
- Is it possible to have steam hot enough to start a fire?
- AskScience AMA Series: We're a team of scientists and communicators sharing the best of what we know about overcoming COVID-19 vaccine hesitancy - Ask us anything!
- Why is argon used in dark matter detection experiments?
- How bright would a single light have to be to be visible from the moon?
- Ask Anything Wednesday - Engineering, Mathematics, Computer Science
- How did they discover the new variants of COVID-19?
- How does scientist determine if the measured vaccine efficacy is statistically significant?
- What causes abrubt drops in the ISS altitude?
- What is the difference, in terms of the electrons motion, between the valence band and the conduction band?
- Would the protonation of an alcohol be exothermic or endothermic?
| Is it possible to have steam hot enough to start a fire? Posted: 13 Jan 2021 05:48 AM PST |
| Posted: 13 Jan 2021 04:00 AM PST Soon, the COVID-19 vaccine will be available to everyone. Public health professionals are asking how to build confidence and trust in the vaccine. We're here to answer some of those questions. We're not biomedical scientists, but our team of experts in psychology, behavioral science, public health, and communications can give you a look behind the scenes of building vaccine confidence, vaccine hesitancy and the communications work that goes into addressing it. Our answers today are informed by a guide we built on COVID-19 vaccine communications on behalf of Purpose and the United Nations Verified initiative, as well as years of experience in our fields. Joining today are Ann Searight Christiano, Director of the University of Florida Center for Public Interest Communications; Jack Barry, Postdoctoral Fellow at the University of Florida Center for Public Interest Communications; Lisa Fazio, Assistant Professor of Psychology at Vanderbilt University; Neil Lewis, Jr., a behavioral, intervention, and meta-scientist, as well as Assistant Professor in the Department of Communication at Cornell University and the Division of General Internal Medicine at Weill Cornell Medicine; Kurt Gray, Associate Professor in Psychology and Neuroscience at the University of North Carolina at Chapel Hill; and Jonathan Kennedy, Senior Lecturer in Global Public Health at Barts and the London School of Medicine and Dentistry, Queen Mary University of London. - Ask us anything. Our guests will join at 1 PM ET (18 UT), username: /u/VaccineCommsResearch [link] [comments]  |
| Why is argon used in dark matter detection experiments? Posted: 12 Jan 2021 03:56 PM PST In XENON experiments, why is argon specifically used rather than any other element? [link] [comments]  |
| How bright would a single light have to be to be visible from the moon? Posted: 13 Jan 2021 07:17 AM PST Specifically lights that shine in a cone such that they could be pointed at the moon and be visible from anywhere facing the earth, as opposed to lasers which would only be visible from a small area Also assuming the area the light is shone from is in night and free from external light pollution [link] [comments]  |
| Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 13 Jan 2021 07:00 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! [link] [comments]  |
| How did they discover the new variants of COVID-19? Posted: 12 Jan 2021 01:13 PM PST So obviously the Covid-19 PCR test is being used quite a lot today but how was the new variant discovered. Did the test start giving false negatives more frequently or is the virus constantly being monitored? If the virus is constantly being studied I have some follow up questions Where do the samples come from? Would they need the consent of the patient who has given the sample to study it? Is the only reason they're screening the virus to detect variants? [link] [comments]  |
| How does scientist determine if the measured vaccine efficacy is statistically significant? Posted: 13 Jan 2021 12:42 AM PST I read an article that said Pfizer deduced its covid vaccine efficacy to be 95% because of the 170 participant involved the clinical trial who got sick, only 5% of them were in the vaccine group (the rest is in placebo group), the difference is statistically significant enough to conclude the drug works. I want to ask how do scientist determine whether the vaccine is statistically significant or not? [link] [comments]  |
| What causes abrubt drops in the ISS altitude? Posted: 12 Jan 2021 11:28 AM PST This Link shows a plot of the ISS vss time on the heavens above website. As indicated by the caption, occassional boosts are used to raise the orbit which decays over time. There are however multiples where there are abrupt drops in the ISS altitude, some of them greater in magnitude and just as fast as the boost phase raises. What causes these? This does not seem to be consistent with the cited "solar activity". [link] [comments]  |
| Posted: 12 Jan 2021 01:39 PM PST Could somebody clarify this? It's to my understanding that electrons in the valence band are bound to the atom they are paired with, while the electrons in the conduction band aren't associated with any given atom, and are free to roam. Is this true? [link] [comments]  |
| Would the protonation of an alcohol be exothermic or endothermic? Posted: 11 Jan 2021 06:15 PM PST I'll be basing this off the equilibrium R-OH + H+ <==> R-OH2+ :) From what I understand, bond making processes are exothermic because energy is released when bonds are formed, and an additional O-H bond is formed in the equilibrium here, thereby making it exothermic. Since -OH alone is a poor leaving group and protonating it makes it a better leaving group therefore making it more reactive, wouldn't that then put R-OH2+ at a higher energy level than R-OH? (If we were drawing an energy diagram) But if the more reactive R-OH2+ is at a higher energy level then that means it must be endothermic on that diagram? I'm really confused, hopefully someone can clarify this for me :) [link] [comments]  |
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