AskScience AMA Series: I'm Dr. Daniel Kraft, Physician-Scientist, Faculty Chair for Medicine at Singularity University and Founder of Exponential Medicine. Ask me anything! |
- AskScience AMA Series: I'm Dr. Daniel Kraft, Physician-Scientist, Faculty Chair for Medicine at Singularity University and Founder of Exponential Medicine. Ask me anything!
- How is it possible that satellites last far longer than planned?
- Does "spinning for gravity" experience drag from the people?
- Are there any mathematical operations that don't have an inverse?
- Do insects sleep or hibernate or regenerate their bodies in a systematic, periodic way?
- What if you were shot by the LHC beam?
- What would happen if you threw a snowball that was near absolute zero at a person?
- Why do other animals not cry (with tears)?
- Why is proving or disproving the Reimann hypothesis important?
- Why do old recordings have so much static/hissing/background noise to them?
- Are there organisms that fall somewhere between single cell organisms and complex organisms?
- When synthesizing new elements, how do scientists know about the number of atoms they produced and how do they measure the rate of decay?
- If I cut open a fruit (e.g a pomelo), does it continue to ripen?
- Is it possible for organic matter to be blown off earth during an asteroid strike and land on the moon?
- When birds migrate north for the spring, if there is a sudden drop in temperature where they're flying, do they just return back south?
- Do some animals die due to climate change and coming out of hibernation early?
- Would your sperm still turn into you if it got with a different egg?
- Is English evolving in a predictable way?
| Posted: 14 Mar 2017 05:00 AM PDT The future of healthcare is being driven by rapidly advancing technologies and breakthrough developments in medicine, neurology, biotechnology, stem cell research, and the explosion of digital information for diagnosis and rapid analysis. From 3D-printed organs to organ regeneration - from point of care to "lab on a chip" diagnostics, synthetic biology and new gene-based therapies - our life, and quality of life are being changed by technology. Ask me questions about what new technologies are being employed or on the horizon for prevention and better diagnosis, stem cell research and understanding how new developments in brain monitoring algorithms will allow physicians to make rapid life-saving clinical decisions in the operating room. Dr. Daniel Kraft is a Stanford and Harvard trained physician-scientist, inventor, entrepreneur, and innovator with experience in clinical practice, biomedical research and healthcare innovation. Dr. Kraft has chaired the Medicine Track for Singularity University since SU's inception, and founded and is Executive Director of Exponential Medicine, a program that explores convergent, rapidly developing technologies and their potential in biomedicine and healthcare. Following undergraduate degrees from Brown University and medical school at Stanford, Daniel was Board Certified in both Internal Medicine & Pediatrics after completing a Harvard residency at the Massachusetts General Hospital & Boston Children's Hospital, and fellowships in hematology, oncology and bone marrow transplantation at Stanford. He has multiple patents on medical device, immunology and stem cell related patents through faculty positions with Stanford University School of Medicine and as clinical faculty for the pediatric bone marrow transplantation service at University of California, San Francisco. Speeches and Interviews
Our guest will be joining us around 4 PM ET (20 UT)! [link] [comments]  |
| How is it possible that satellites last far longer than planned? Posted: 14 Mar 2017 02:21 AM PDT For example, the Meteosat-7 satellite was launched around 20 years ago and is still working fine without the need for maintenance. The satellite was supposed to stay in geostationary orbit for only 6 years. [link] [comments]  |
| Does "spinning for gravity" experience drag from the people? Posted: 14 Mar 2017 12:01 AM PDT Looking at a craft like that in "Passengers" which spins for "gravity" - Newton's First Law says once it's up to speed, it will keep spinning. I believe work is being expended in constantly changing the direction of motion of the contents of the spinny bit (the "centripetal acceleration"). Does this slow the spinning of the wheel? What is the means by which the slowing happens? I can't get my head around "swinging people in a circle slows the spin" Thanks! [link] [comments]  |
| Are there any mathematical operations that don't have an inverse? Posted: 13 Mar 2017 05:23 PM PDT Earlier today I was thinking about how I tend to check division using multiplication, subtraction using addition etc. This got me thinking about whether there were any operations that didn't have an inverse. I couldn't think of any off the top of my head, and the only things I know about that I thought could be options were some kind of mappings to the complex plane or w plane or something like that. [link] [comments]  |
| Do insects sleep or hibernate or regenerate their bodies in a systematic, periodic way? Posted: 14 Mar 2017 12:33 AM PDT |
| What if you were shot by the LHC beam? Posted: 13 Mar 2017 05:06 PM PDT What would happen if you were struck with the beam from the Large Hadron Collider? Would it kill you or would the particle be too small to do any damage? [link] [comments]  |
| What would happen if you threw a snowball that was near absolute zero at a person? Posted: 13 Mar 2017 03:28 PM PDT |
| Why do other animals not cry (with tears)? Posted: 13 Mar 2017 03:13 PM PDT |
| Why is proving or disproving the Reimann hypothesis important? Posted: 13 Mar 2017 10:26 AM PDT So after years of being a lawyer after being awesome at math in high school, I've been dusting off my old skills by watching a lot of youtube videos recently. After years of hearing vaguely about the Reimann Zeta function, I feel like I have a good handle on what the problem is. But I seem to be butting up against my internal cynicism, finding myself wondering "who cares about this weirdly esoteric problem?" I realize this is a weird question to ask about any pure math problem (inasmuch as who cares about any of it) but even among math problems this one seems very famous, and there's a million dollar prize out there for solving it. Why? As far as I can tell, the only practical consequence of the problem that I can find (at least that's intelligible to a layman) is that it somehow impacts the way we calculate the distribution of prime numbers, which, again...who cares? I'm genuinely not trying to be cynical with this question - when I say "who cares", I say it with the admission that I care. I'm not saying caring about it is stupid. I'm just trying to understand why this problem seems to have such a place of prominence in math. [link] [comments]  |
| Why do old recordings have so much static/hissing/background noise to them? Posted: 13 Mar 2017 02:36 PM PDT Whenever you listen to old recordings (before 1960ish) you hear a persistent background noise that's quite loud. I think all recordings, even today, have some, but not nearly the same amount as they used to. [link] [comments]  |
| Are there organisms that fall somewhere between single cell organisms and complex organisms? Posted: 13 Mar 2017 03:10 PM PDT I know you have single cell organisms like say a paramecium. And complex organisms which can run the gamut from say a dust mite to a human being or blue whale. Are there organisms that fall somewhere between these two though? Like something that is made up of not one or billions of cells but say five different cells that share a common genetic code? [link] [comments]  |
| Posted: 13 Mar 2017 10:58 AM PDT I'm very sorry if this is a noob question. I never paid attention in chemistry class. Anyway, here we go: I've been watching some videos about the synthetization of Ununoctium / Oganesson recently and got some questions: In the video I watched, they said that they synthesized x atoms of Ununoctium. How can you measure something this small? Also, how do you measure the time for it to decay, which is also a very small time? [link] [comments]  |
| If I cut open a fruit (e.g a pomelo), does it continue to ripen? Posted: 13 Mar 2017 04:19 PM PDT |
| Posted: 13 Mar 2017 06:58 AM PDT I recently came across a Joe Rogan episode on why he changed his stance on the moon landing. One part of it was talking about a "moon rock" given as a gift that turned out to be petrified wood. While this instance is theft or deceit, it got me thinking about the asteroid impact that caused our last mass extinction. Was there enough force in that impact to Launch debris into space? Would the speed required to leave our atmosphere vaporize any organic matter traveling with it? I guess my main question is if a piece of wood were left on the moon for an extended period of time, what would it's aging process look like? How would it differ depending on if it were sitting on the surface or had been driven into the ground? I assume that due to less gravity nothing would be under the same amount of pressure that it is here on Earth. [link] [comments]  |
| Posted: 13 Mar 2017 03:24 PM PDT |
| Do some animals die due to climate change and coming out of hibernation early? Posted: 13 Mar 2017 12:21 PM PDT I live in Ohio where the temperature fluctuates as much as my love/hate relationship with Frito Twists. Anyway, on some days it was 70 degrees in December and January, and some days where it was 10-20 degrees F in February. It's now March and last week it was 60F outside and I went out running; now it's snowing and 25F. My question is, how many animals break out of hibernation due to the warm sunny weather in February, eat their buried food, only to be snowed on and hit by sub-30 degree weather a few days later? Is this a non-issue for most animals? How about birds who [might] migrate due to the weather, thinking it is Spring when it is actually the middle of January? (I don't know if this is actually true, just something that I think about) Are most animals smarter than that? Will this become a bigger issue when climate change makes an even larger impact or will animals seemingly adapt to these changes? [link] [comments]  |
| Would your sperm still turn into you if it got with a different egg? Posted: 13 Mar 2017 03:34 PM PDT It might sound dumb but here is a drawing of what I mean. https://i.gyazo.com/66f9c5dfe97bf7ddf7e9c5d3b7f60004.png There are 2 sets of sperm/eggs, but 4 different possibilities. Would there be 2 different people regardless of the matches or could there be 4 different outcomes of people? [link] [comments]  |
| Is English evolving in a predictable way? Posted: 13 Mar 2017 05:20 AM PDT |
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