How does iron ore form from individual molecules created in a generation 1 star? |
- How does iron ore form from individual molecules created in a generation 1 star?
- Why do we measure decay in half-lives rather than just lives?
- Why is the newborn heel prick test is done on the heel?
- Would LIGO results improve if there were a third branch perpendicular to the existing two?
- Is an algorithm that’s good at identifying one type of objects in pictures/videos (e.g. faces, cars, birds) expected to be a better starting point for learning to identify other types of objects, or is it just as easy to start from scratch?
- [Physics] [Chemistry] Why does something smoulder instead of be on fire with a flame? What's happening physically?
- How are meteors/asteroids tracked?
- Is there any support for fields that exist that have no observed particles that they interact with?
- Are all IIEE float and double numbers rational?
- Throughout the history of the Earth, which land areas have shifted the least and the most?
- How can an Earthquake alter the Earths rotational speed?
- Size comparison: Simbakubwa Kutokaafrika vs Andrewsarchus Mongoliensis?
- Are sand grains permanently the size that they are? If so, why don’t they erode any smaller?
- What is dandruff and how does it form?
- How did improperly treated water cause lead to be released into Flint, Michigan’s water system?
- What makes cow's milk amenable to homogenization that is different from plant milks that use emulsifying agents?
- Are all batteries subject to degradation over time?
- If hemoglobin is more efficient than myoglobin, why do we have both?
- Is there a maximum distance between the mean and median of a set of data, say as a function of the standard deviation?
- Monospecies activity of pollinators other than bees?
| How does iron ore form from individual molecules created in a generation 1 star? Posted: 25 Apr 2019 03:59 PM PDT 1st generation stars create heavier elements in form of atoms and then explode sending these elements off into space when syar dies and goes nova. How do these stray atoms group together into tangible iron nuggets or iron ore? Is that happening while drifting in space or does some geological mechanism cause the stray atoms to group into a vein of tangible iron ore? Thanks. [link] [comments]  |
| Why do we measure decay in half-lives rather than just lives? Posted: 25 Apr 2019 07:50 PM PDT |
| Why is the newborn heel prick test is done on the heel? Posted: 25 Apr 2019 02:21 PM PDT |
| Would LIGO results improve if there were a third branch perpendicular to the existing two? Posted: 25 Apr 2019 11:32 AM PDT |
| Posted: 26 Apr 2019 02:43 AM PDT |
| Posted: 25 Apr 2019 08:27 AM PDT |
| How are meteors/asteroids tracked? Posted: 25 Apr 2019 09:10 AM PDT After watching news reports covering the Chelyabinsk meteor of 2013, it seems that this particular meteor was unable to be tracked because of it's small size (about 2 SUV's). [link] [comments]  |
| Is there any support for fields that exist that have no observed particles that they interact with? Posted: 25 Apr 2019 09:01 PM PDT Every fundamental particle appears to be excitations of their own respective field which pervades all space and time, but does it appear that there could be fields which just never get excited, but also overlap the others waiting for an interaction that doesn't exist? [link] [comments]  |
| Are all IIEE float and double numbers rational? Posted: 25 Apr 2019 02:22 PM PDT |
| Throughout the history of the Earth, which land areas have shifted the least and the most? Posted: 25 Apr 2019 03:30 PM PDT We (hopefully) all know that Earth used to be a single continental landmass that has since separated and drifted apart immensely. What land masses have shifted the least over these few hundreds of millions of years. And what are the implications (climate-wise, biological, cultural, etc) of experiencing a large shift versus a small shift? [link] [comments]  |
| How can an Earthquake alter the Earths rotational speed? Posted: 25 Apr 2019 06:55 PM PDT Just saw an article which said that an earthquake in Japan in 2011 caused the Earths rotation to speed up shortening our days by 1.8 milliseconds. How would this work? Earth is free floating in space so I would think for it's rotation to be altered an external force would need to be applied to the entire earth no? Like an asteroid impact or something? [link] [comments]  |
| Size comparison: Simbakubwa Kutokaafrika vs Andrewsarchus Mongoliensis? Posted: 25 Apr 2019 05:47 AM PDT Recent news articles declare Simbakubwa to be the largest carnivorous land mammal of all time, beating out the polar bear. I was under the impression that this title was held by Andrewsarchus, but I can't find any sources comparing the size of each. Given that we only have limited fossil remains of these 2 enormous predators, which was likely the larger beast? [link] [comments]  |
| Are sand grains permanently the size that they are? If so, why don’t they erode any smaller? Posted: 25 Apr 2019 08:33 AM PDT |
| What is dandruff and how does it form? Posted: 25 Apr 2019 05:05 AM PDT |
| How did improperly treated water cause lead to be released into Flint, Michigan’s water system? Posted: 25 Apr 2019 05:19 AM PDT |
| Posted: 25 Apr 2019 05:35 AM PDT |
| Are all batteries subject to degradation over time? Posted: 25 Apr 2019 02:55 AM PDT Despite the recent shifts from fossil fuels to batteries, it seems that lithium-ion will always be subject to irreversible chemical degradation, reducing capacity by up to 50% given enough time. Is this the case with all batteries e.g. lead acid? I read something about graphene batteries not having this problem. [link] [comments]  |
| If hemoglobin is more efficient than myoglobin, why do we have both? Posted: 24 Apr 2019 08:25 PM PDT |
| Posted: 24 Apr 2019 09:12 PM PDT For example, is it possible to have a set of data with mean mu=0, median med=100, and standard deviation sigma=1. The standard deviation is "small", so the data should be "close together", which doesn't seam compatible with having enough data points sufficiently smaller than 100 to force the mean to be 0. Edit: This may be bad form, but I think I answered my own question. I can prove [link] [comments]  |
| Monospecies activity of pollinators other than bees? Posted: 24 Apr 2019 08:33 PM PDT Long ago (VERY long ago) I was told that bees leave the hive and visit only one flower species on that trip. This is confirmed by noting the type of pollen gathered upon returning. Today, I'm watching Nature on butterflies however, and wing pollination was mentioned. Since this is not a food source, there is less, if any, reason to only visit one species per day. My question is: Are butterflies bound by the monospecies rules of bees? I understand that a single flower type may all be most ripe and providing the most nectar today, but if there are multiple good nectar sources, will butterflies visit all of them and perform pollination for multiple species on the same day? [link] [comments]  |
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