- AskScience AMA Series: We're from Pacific Northwest National Laboratory. Our recent work in data visualization has led to the creation of a new colormap, cividis, for more consistent, accurate data interpretation - whether you have a color vision deficiency or not! Ask us anything!
- Since electricity flows on the surface of its conductor could metal tubing of equal surface area be substituted for solid core wire?
- Why does superfluidity only occur in helium?
- Why does red light preserve night vision and reduce eye strain more than other colors?
- Why do shoelaces untie?
- Do animals (and plants) that are accustomed to seasonal weather changes e.g bears, deer, wolves etc. lose this trait over the generations when they are transplanted to climates that do not have winters or have very mild winters?
- Historically, how was it determined that the atmosphere has an ozone layer?
- Do echidnas, porcupines and hedgehogs (and any other spiky creatures) have similar ancestors?
- Reading a MSDS on MgSO4 anhydrous, says inhaling may cause irritation of the throat, but when I googled inhalation of MgSO4 it came up as a treatment for Asthma, how does this work and/or am I misunderstanding something?
- If the sun’s radiation, EM waves, heat up the earth, is the earth affected by the EM waves of other stars that we can see? If so, how powerful is that effect?
- Except for the human flu vaccine, why do dogs/cats need vaccines boosted every year while people don’t?
- Do we have models to predict how rocks fracture?
- Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
- Why is there only one jfet transfer curve for a perticular jfet??
- Some species don't breed in captivity. Why? What's keeping them?
- So, how do we know the exact mass of any planet apart from earth?
- How can trees grow around and “consume” things like fences?
- Why is the Voyager 1 traveling so fast?
- Is vasovagal syncope always chronic?
- Does the sun's spectral output change at all?
| Posted: 17 Oct 2018 04:00 AM PDT Hi Reddit! We're Jamie Nunez and Dr. Ryan Renslow, scientists at Pacific Northwest National Laboratory. Rainbow colormaps have long been known to make data interpretation difficult and sometimes even impossible for those with colorblindness, yet they are still very popular due to limited alternatives. That's why we developed an open-source Python module that can automatically convert colormaps into forms easily interpreted by those with or without color vision deficiencies. One colormap in particular that we created, called cividis, enables consistent and accurate data interpretation for both people with normal vision and those who are colorblind. Cmaputil can be used by anyone to create their own optimized colormaps and can be accessed here: https://github.com/pnnl/cmaputil Cividis is currently available in Python (matplotlib & plotly packages), R (viridis & viridisLite packages), COMSOL, and more. Read our PLOS One paper "Optimizing colormaps with consideration for color vision deficiency to enable accurate interpretation of scientific data" here: https://goo.gl/UDPWFd We'll be on at noon PT (3 p.m. ET, 19 UT). Ask us anything! [link] [comments]  |
| Posted: 17 Oct 2018 03:22 AM PDT |
| Why does superfluidity only occur in helium? Posted: 16 Oct 2018 08:43 AM PDT |
| Why does red light preserve night vision and reduce eye strain more than other colors? Posted: 16 Oct 2018 04:53 PM PDT |
| Posted: 17 Oct 2018 07:26 AM PDT |
| Posted: 16 Oct 2018 07:08 PM PDT If the whole world were to experience some drastic increase in temperature that eliminated winter and lasted a thousand years, would seasonal plants and animals, if the world set itself right again, be able to survive a winter? And also, how did plants and animals react with the end of interglacial periods? [link] [comments]  |
| Historically, how was it determined that the atmosphere has an ozone layer? Posted: 17 Oct 2018 07:04 AM PDT |
| Do echidnas, porcupines and hedgehogs (and any other spiky creatures) have similar ancestors? Posted: 17 Oct 2018 04:33 AM PDT If not, as I would suspect is the case given that echidnas, for example, are monotremes, then how did such similar creatures come to evolve so far apart geographically? [link] [comments]  |
| Posted: 17 Oct 2018 04:05 AM PDT This is the MSDS, I'm writing about the hazards of purification of Magnesium sulfate synthesised for an A level PAG. Thanks in advance for any help. [link] [comments]  |
| Posted: 17 Oct 2018 03:39 AM PDT |
| Posted: 17 Oct 2018 05:47 AM PDT For instance Rabies and distemper vaccines in animals versus dtap and mmr vaccines in people. [link] [comments]  |
| Do we have models to predict how rocks fracture? Posted: 16 Oct 2018 05:46 PM PDT More precisely, say I wanted to simulate whacking a smooth, round pebble with a hammer so that a crack appears. Do our current models of rocks fracturing precisely predict the exact geometric shape of these cracks that appear? What are good references for this? [link] [comments]  |
| Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 17 Oct 2018 08:11 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary 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]  |
| Why is there only one jfet transfer curve for a perticular jfet?? Posted: 17 Oct 2018 02:03 AM PDT |
| Some species don't breed in captivity. Why? What's keeping them? Posted: 17 Oct 2018 04:09 AM PDT |
| So, how do we know the exact mass of any planet apart from earth? Posted: 16 Oct 2018 10:54 PM PDT I guess you could explain how do we know the composition of a planet too. Thanks. [link] [comments]  |
| How can trees grow around and “consume” things like fences? Posted: 16 Oct 2018 01:10 PM PDT |
| Why is the Voyager 1 traveling so fast? Posted: 16 Oct 2018 02:07 PM PDT I know that the Voyager 1 travels at about 63'000 km/h but how was it able to even get to that speed? [link] [comments]  |
| Is vasovagal syncope always chronic? Posted: 16 Oct 2018 08:59 AM PDT I was looking at it online and saw it said somewhere that it goes away in a week or so, so does that mean it's not always a permanent condition? [link] [comments]  |
| Does the sun's spectral output change at all? Posted: 16 Oct 2018 04:47 PM PDT Many illuminant standards such as CRI use "daylight" as a reference, with a higher score seeming to indicate a higher similarity to the sun's spectral output. However, aside from the sun's color changing due to its position in the sky (as light is scattered by our atmosphere), I realize that there are solar flares, sun spots, and other phenomena that might influence it's spectral output from time to time. Is anyone measuring this? Is the "daylight" standard an average of many spectral measurements over time? I get that our eyes evolved in response to the sunlight available to us, and thus our perceptions of color, so I was wondering how that is involved in engineering high-CRI light sources. I'm also not referring to the general aging of a main sequence star, and it's gradual cooling off over millennia. Thanks! [link] [comments]  |
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