How does seedless produce get planted and reproduced? |
- How does seedless produce get planted and reproduced?
- Does a star visibly change when it begins using a new fuel? And is the timescale observable?
- As we age, do our organs lose transplant value? If they do, are there any with more longevity? Like, a 70 year old heart might not be desirable, but maybe kidneys or something else retain some value despite age?
- What is created when white phosphorous burns on aluminum metal?
- Why don't autogyros roll?
- Have we already observed a moon with a submoon? Is this even theoretically possible?
- Why does the decibel scale use powers of 10 instead of some other number?
- Does digital data have mass as it's transferred from one device to another?
- Why do we still use bike and car tires that can lose air?
- How do you make sure that there is always enough oxygen in the ISS?
- Do we have pictures of Mars' moons from Mars?
- The lining of our stomachs are completely replaced every week without us noticing. Why can’t uterine lining do the same thing without bleeding and causing pain for days?
- Separate volatile solvent from solution with two solvents?
- Why are the largest craters on the moon facing us? Is there a reason or is it just a coincidence?
- Have planet sized objects fallen into the sun?
- How do astronauts enter the space from their space station? Doesn't the air in the station move out into the vacuum?
| How does seedless produce get planted and reproduced? Posted: 27 Jul 2019 01:06 AM PDT |
| Does a star visibly change when it begins using a new fuel? And is the timescale observable? Posted: 26 Jul 2019 05:54 PM PDT For example, if a star fusing hydrogen has enough mass to fuse helium when the hydrogen is depleted, will it visibly change? And if so, will it happen quick enough for us to see the change? [link] [comments]  |
| Posted: 27 Jul 2019 07:42 AM PDT |
| What is created when white phosphorous burns on aluminum metal? Posted: 27 Jul 2019 07:19 AM PDT I was asked recently by a friend who works for the US military about what would happen if burning white phosphorous were to make contact with aluminum metal. Of course I didn't have an answer so I started researching and couldn't really find much on the subject. Do any of you have any reading material on this or something similar? Or can you explain what would happen and if it would form something toxic? The only thing I can find is aluminum phosphate and aluminum phosphide, but I have no clue if these would form with white phosphorous burning on aluminum metal. He works with munitions for the US national guard and seemed to be fairly concerned. Any and all info would be greatly appreciated. Thank you in advance. [link] [comments]  |
| Posted: 27 Jul 2019 06:25 AM PDT Why don't autogyros roll? As I understand it, the advancing rotor blade has a higher relative airspeed (and therefore higher lift) than the retreating rotor blade. Thanks! [link] [comments]  |
| Have we already observed a moon with a submoon? Is this even theoretically possible? Posted: 26 Jul 2019 04:23 PM PDT |
| Why does the decibel scale use powers of 10 instead of some other number? Posted: 27 Jul 2019 03:16 AM PDT I'm confused about why the decibel specifically scale uses powers of 10 instead of some other number , for example 9 or 11 or even some other number that isn't really round. Is it used conventionally because powers of 10 is easier to use? Or is it a coincidence? Or is it something else altogether? Help me out [link] [comments]  |
| Does digital data have mass as it's transferred from one device to another? Posted: 26 Jul 2019 11:17 AM PDT I have been curious if there is a physical limitation to the transference of data as its volume continues to grow at an incredible rate year after year. Does digital data have mass as it's transferred over both fiber optic and/or through the airwaves? Is there any relevance to the type and size of data that can be quantified in terms of a tangible measurement? Could we hypothetically run out of "space" to transfer data? [link] [comments]  |
| Why do we still use bike and car tires that can lose air? Posted: 26 Jul 2019 10:22 AM PDT It seems like by now we would have come up with a solution that doesn't allow for car and bike tires to deflate and have to be refilled - is there a practical reason that something completely air tight and factor inflated isn't a good idea? Is it simply easier, or to make it possible to repair a flat? [link] [comments]  |
| How do you make sure that there is always enough oxygen in the ISS? Posted: 26 Jul 2019 11:00 AM PDT |
| Do we have pictures of Mars' moons from Mars? Posted: 26 Jul 2019 02:16 AM PDT |
| Posted: 26 Jul 2019 10:01 AM PDT |
| Separate volatile solvent from solution with two solvents? Posted: 25 Jul 2019 11:05 PM PDT I have a solution of polycaprolactone in a mix of dichloromethane (DCM) and dimethylformamide (DMF). I first dissolved it in DCM and then added DMF because it took too long to dissolve in DMF even with heating. As per this resource, DCM and DMF mixture is zeotropic. So, I think it should be possible to get rid of all the DMF by heating. I left the solution stirring overnight at 60°C, but there was only a small drop in the liquid height that indicated that all the DCM was not removed. Since DCM boils at around 39.6°C, all of it should have evaporated. The ambient temperature may have been around 28°C or more. The heat transfer from the hot plate would not have been the most efficient considering that the solution was in an uncapped ~10cm x ~3 cm dia. vial, being stirred on a 60°C hot plate. But the vial felt warm enough. I cannot figure out what I may be missing here. [link] [comments]  |
| Why are the largest craters on the moon facing us? Is there a reason or is it just a coincidence? Posted: 25 Jul 2019 08:04 PM PDT |
| Have planet sized objects fallen into the sun? Posted: 25 Jul 2019 08:38 PM PDT The sun has a lot of mass. Was that all from dust and gas? Or could it be that planet sized objects have fallen into the sun? [link] [comments]  |
| Posted: 26 Jul 2019 09:34 AM PDT |
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