As coffee grounds are adsorbent, does the process of making coffee remove pollutants (such as PFAS) from water? If so, to what extent compared to charcoal filtering? |
- As coffee grounds are adsorbent, does the process of making coffee remove pollutants (such as PFAS) from water? If so, to what extent compared to charcoal filtering?
- Is it true that we need a good snowfall every winter in order to minimize ticks and germs the next summer, or is this just a bunch of baloney?
- Does the atmosphere have tides?
- During a house fire, what causes the windows to shatter? Is it from the creation of smoke through combustion creating a pressure change from inside to outside, or a thermal expansion in the window frames?
- Can any Bee larva become a queen?
- What happens to an island formed in a hotspot when in a subduction zone?
- What happens to an island formed by a hotspot when in a subduction zone?
- Is tree growth linear, or do younger trees grow faster? How does that impact carbon consumption?
- Is there a point at which eating will not stop you starving to death?
- Do trees grow rings at the equator?
- Could a massless particle gain mass?
- Why does the distance from the sun not affect the earth’s seasons but it’s small tilt does?
- Heartworm Disease in Wildlife and Side effects?
- Is washing your hands with cold water equally as effective as washing your hands with warm or hot water?
- Are there Any NONTRIVIAL Infinite Sums that Diverge But Are Smaller than the Harmonic Series?
- How are dendritic cells manage to get infected by viruses to present their antigen to T cells?
- How does a vaccine cure a bacterial disease?
- Does anyone have a good explanation on what a conservative force is?
- How were blood types tested when they were first discovered?
| Posted: 03 Feb 2020 05:09 PM PST The question occurred to me the other day when I noticed that the heavy chemical odor and taste of water in my city isn't detectable (to me) in coffee. I know that heating the water causes some of the treatment chemicals to evaporate out of the water, and that PFAS have a higher boiling point than water and thus are not eliminated via heating, but I'm also wondering how much of the bad stuff gets adsorbed by the coffee grounds. I couldn't find any studies, and the former use of PFAS in disposable coffee cups creates a lot of false-positive google searches. Any thoughts? [link] [comments]  |
| Posted: 03 Feb 2020 05:00 PM PST |
| Does the atmosphere have tides? Posted: 03 Feb 2020 12:53 PM PST It's my understanding that the moon causes sea levels to rise and settle as it's gravity pulls water towards it. Does it do a similar thing with the air surrounding earth? Does the atmospheric boundary fluctuate as the moon orbits? [link] [comments]  |
| Posted: 04 Feb 2020 03:07 AM PST |
| Can any Bee larva become a queen? Posted: 04 Feb 2020 05:50 AM PST Beekeeping. Was watching this video on raising queen bees. https://youtu.be/TW_FJTnhilg?t=1171. He takes larvae and put them on smaller cells. I thought they are classified as workers, nurse and queen by birth. Can any larva be a potential queen? If so, can any larva become any type? [link] [comments]  |
| What happens to an island formed in a hotspot when in a subduction zone? Posted: 04 Feb 2020 04:30 AM PST Fx. In the case of Hawaii. Imagine hawaii moving all the way to the coast of japan over the span of a long time. What would happen with the island when the plate dives under the plate of japan. Will it just sink with it? Will it be shaved off? [link] [comments]  |
| What happens to an island formed by a hotspot when in a subduction zone? Posted: 04 Feb 2020 04:26 AM PST Fx. In the case of Hawaii. Imagine hawaii moving all the way to the coast of japan over the span of a long ass time. What would happen with the island when the plate dives under the plate of japan. Will it just sink with it? Will it be shaved off? [link] [comments]  |
| Is tree growth linear, or do younger trees grow faster? How does that impact carbon consumption? Posted: 03 Feb 2020 02:15 PM PST I have a question about the carbon consumption of a tree over its lifespan that I can't answer. Feel free to correct me but this is what I think are (simplified) facts:
Things I don't know that I'd like answers to:
This is purely academic and I'm not interested in ripping out a forest or other dastardly deeds. [link] [comments]  |
| Is there a point at which eating will not stop you starving to death? Posted: 04 Feb 2020 01:55 AM PST Is there a "point of no return" that when passed, the human body is no longer able to digest food properly and you will still starve? [link] [comments]  |
| Do trees grow rings at the equator? Posted: 03 Feb 2020 04:11 PM PST And if so, do they correspond to one year of age like tree rings in other places? It seems like since there aren't traditional seasons at the equator, the trees either (a) wouldn't grow in a way that would form rings or (b) the rings would form at some other frequency. [link] [comments]  |
| Could a massless particle gain mass? Posted: 03 Feb 2020 08:45 AM PST Hello! These questions came to me when working on a science-fiction project, and while I know a little bit about quantum physics I'm in no way an expert, and I can't find an answer to these questions: 1. Would it be possible in some way or another for such a particle to spontaneously gain mass, or to have mass added to it by some mean? 2. If so, how could it be done and in what conditions would it happen? 3. What would happen of the particle once if gained mass, admitting that it doesn't collide with anything? And I know this isn't possible, but since it's the question which made me ask all of the previous ones, I want to ask: what would happen to a particle with with mass (say, an electron), if it could be accelerated to 100% of c instead of only a certain percentage of c ? Thanks in advance! [link] [comments]  |
| Why does the distance from the sun not affect the earth’s seasons but it’s small tilt does? Posted: 03 Feb 2020 10:51 AM PST How come the relatively small axial tilt the earth has affects our temperatures so drastically (60-70degrees Fahrenheit change from summer to winter) but the distance the earth is from the sun over the year doesn't? [link] [comments]  |
| Heartworm Disease in Wildlife and Side effects? Posted: 03 Feb 2020 04:09 PM PST I assume wild animals such as wolves, coyotes, fox, etc can be infected by heartworm disease. But are they less likely to have complications similar to those found in the domesticated dog and cat? Do they have some sort of resistance to heartworm disease? Or do they naturally live shorter lives and thus don't get to see the long term effects of heartworm infection? [link] [comments]  |
| Posted: 03 Feb 2020 10:08 AM PST |
| Are there Any NONTRIVIAL Infinite Sums that Diverge But Are Smaller than the Harmonic Series? Posted: 03 Feb 2020 09:18 AM PST I know it's straightforward to construct a series that is always smaller than the harmonic series:
But are there any series which are always smaller than the harmonic series that don't just involve using a subset of that series? Or constructed from it? Seems there's got to be something, no? [link] [comments]  |
| How are dendritic cells manage to get infected by viruses to present their antigen to T cells? Posted: 03 Feb 2020 03:35 PM PST As far as I know, most viruses don't just infect any random cell, but target specific kind of cells, for example epithelial cells, by binding to certain molecules on their surface. To initiate immune response to a virus, its antigen has to be presented by a dendritic cell using class I MHC protein. To do so, presumably, dendritic cell needs to be infected by that virus or else it would not be able to put its antigen on class I MHC's. So, how do dendritic cells "catch" all those viruses, if dendritic cells are not the type of cells that viruses target? E.g. how can dendritic cell can be infected by a virus which infects only epithelial cells? [link] [comments]  |
| How does a vaccine cure a bacterial disease? Posted: 03 Feb 2020 01:10 PM PST I recently found out to treat tuberculosis (TB), the vaccine bacillus calmette-guérin (BCG). But from what I learned in general biology, antibiotics are used to treat bacterial infections and vaccines PREVENT viral infection. So my question is what's the mechanism for vaccines stopping bacteria from spreading? [link] [comments]  |
| Does anyone have a good explanation on what a conservative force is? Posted: 03 Feb 2020 04:28 PM PST |
| How were blood types tested when they were first discovered? Posted: 03 Feb 2020 11:14 AM PST When knowledge of blood types was first utilized in WW1 how did they test for compatibility? Especially in the field before any blood antigens were isolated/usable for a field test. Did they just mix 2 individual's blood and see if it coagulated? [link] [comments]  |
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