- AskScience AMA Series: Hi, I’m Dr. Victoria Hsiao, an endocrinologist at the University of Rochester Medical Center in Rochester, N.Y. Let’s talk about how to survive the holidays when you have diabetes. AMA!
- Why Delta-V and not Acceleration?
- If different instruments all play the same note, what makes them sound so different?
- Is there any way we know of to decompose sulfur dioxide into sulfur and oxygen?
- Why do some drugs work better when consumed with solid food?
- Why is wood ash so basic?
- Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology
- During allergic reactions, what does injecting epinephrine do that the body's natural adrenaline can't?
- If the amount of CO2 in the atmosphere was instantly cut in half, (we don't want to kill the plants) how immediately would the effects on global warming been noticed?
- Why do windmills have such skinny blades?
- Why don't electrons crash into the nucleus?
- Looking back to the interstellar applications of the Orion nuclear propulsion system. Am I understanding correctly that this craft would have decelerated by flipping 180° and sequentially ploughing through self-generated fireballs as it detonated it's payload ahead of itself???
- How does a server know my bandwidth when I'm downloading a file? i.e. how does it know how much data to send at a time?
- In a few hundred million years or so when the sun is supposed to grow to be a giant and consume Earth, why is it going to get hotter? Shouldn't it get cooler because it's expanding and dying?
- Does notation exist for it possible to "write" any real number?
- How seriously should we be taking "sleep cycles" on an individual level?
- What happend to the Enigma Machine?
| Posted: 11 Nov 2015 04:20 AM PST Hi, I'm Dr. Victoria Hsiao, a diabetes specialist and health outcomes researcher at the University of Rochester Medical Center in Rochester, N.Y. The holidays are quickly approaching and that means everyone is munching on cookies, rich desserts, dips and snack trays in the office and at parties. This "season of eating" is a serious challenge for diabetics. I work with my patients to manage glucose with diet and exercise, weight management, carb counting and insulin pumps. I can answer questions about these and other strategies to cope with diabetes as the holidays approach. I'll start answering questions at 2:30 p.m. EST. Go ahead, AMA! [link] [109 comments]  |
| Why Delta-V and not Acceleration? Posted: 10 Nov 2015 10:34 PM PST I hear the term Delta-V from rocket scientists a lot. If I recall from my University Physics 101 course, the change in velocity with respect to the change in time is called Acceleration. So why does the Rocket Science Community use the term Delta-V instead of just saying Acceleration? Or do I fundamentally misunderstand? What is the difference between Delta-V and Acceleration? [link] [10 comments]  |
| If different instruments all play the same note, what makes them sound so different? Posted: 11 Nov 2015 05:16 AM PST Eg, I play the same note in the same octave on piano and ukulele. They're obviously the same tone, but why do they sound so different? [link] [4 comments]  |
| Is there any way we know of to decompose sulfur dioxide into sulfur and oxygen? Posted: 11 Nov 2015 06:52 AM PST |
| Why do some drugs work better when consumed with solid food? Posted: 10 Nov 2015 09:41 PM PST |
| Posted: 10 Nov 2015 10:13 PM PST I'm venturing into soap making and composting - and I keep running into the fact that wood ash is very basic. Why? Shouldn't the burnt remains of wood be primarily (neutral) carbon? [link] [3 comments]  |
| Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology Posted: 11 Nov 2015 07:02 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Economics, Political Science, Linguistics, Anthropology 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] [comment]  |
| Posted: 10 Nov 2015 09:21 PM PST I have always been under the impression that epinephrine and adrenaline are the same thing... It seems like having a severe allergic reaction would definitely already get your adrenaline pumping, so how is injecting epinephrine helpful? Is it simply that your body doesn't produce enough to counteract the effects of the allergy and the shot gives you an extra boost of it, or does injecting epinephrine somehow have a different physiological effect than your body naturally producing adrenaline does? [link] [5 comments]  |
| Posted: 11 Nov 2015 04:43 AM PST |
| Why do windmills have such skinny blades? Posted: 10 Nov 2015 07:00 PM PST Most of the modern windmills I see have three long, thin blades. My intuition(probably incorrect) is that blades with a greater surface area would be influenced by more wind, and therefore could generate more power. So why are thin blades used in modern windmill designs? [link] [13 comments]  |
| Why don't electrons crash into the nucleus? Posted: 10 Nov 2015 05:41 PM PST Usually people use the uncertainty principle to answer this question, but I don't understand how that explains the entire picture. What happens to the attractive force between the electron and the protons? Does HUP create some kind of repulsive force? How does angular momentum play into all this? [link] [6 comments]  |
| Posted: 10 Nov 2015 03:29 PM PST I know, it was never built, and yes, I'm referring to the 1950's design (see: https://en.wikipedia.org/wiki/Project_Orion_%28nuclear_propulsion%29#Interstellar_missions) but: What kind of materials would be able to withstand the kind temperatures and stresses involved? What was the plan to decelerate? The was I see it (and please clarify if I'm wrong), the craft would have had to flip around and reverse-thrust it's way towards destination, a bit like the Apollo systems used to do. This would imply having the craft sequentially passing through the fireballs of several nuclear explosions as it detonated those bombs ahead of itself during deceleration. I'm trying to wrap my mind around the implications of this concept (More precisely: what's left of my mind after it was blown away). By 2015 standards, is this design still realistic? If so how would be adapt it? [link] [10 comments]  |
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| Does notation exist for it possible to "write" any real number? Posted: 10 Nov 2015 11:23 AM PST I was just thinking earlier, we can write some transcendental numbers like e or pi with a finite number of elements, unlike it's decimal expansion. Is it possible to write any real number as say a combination of any of today's notation we use today? [link] [13 comments]  |
| How seriously should we be taking "sleep cycles" on an individual level? Posted: 10 Nov 2015 08:02 AM PST I was originally going to ask if the "sleep cycle" is nonsense, but reading through some previous posts on this sub I've found that it seems genuinely accepted that sleep cycles and the circadian rhythm matters. (Recent example.) What I would like to know is how much? Has any research been done to quantify the actual result on energy levels or general health or life spans or anything concrete? [link] [7 comments]  |
| What happend to the Enigma Machine? Posted: 10 Nov 2015 09:29 AM PST In school we are currently doing a short unit on Turing and how he decrypted the Enigma machine. I was wondering if there was anything which improved upon the designs of the Enigma machine? Or something that became the "spiritual" child of the enigma machine during the korean/Vietnam time period in order for the super powers to protect their secret messages/orders? I've tried to do some searching myselfand have found nothing. My history teacher is drawing a blank as well. So I was wondering if any of you knew anything? [link] [20 comments]  |
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