Some flying insects such as butterflies have very erratic and disorienting looking flight paths. Are they in complete control of their movements or do they really struggle to get around? |
- Some flying insects such as butterflies have very erratic and disorienting looking flight paths. Are they in complete control of their movements or do they really struggle to get around?
- If I focused on my heart hard enough, could I control my heartbeat?
- Why is 0-14 used for the pH scale? What are the highest and lowest pH substances both in existence and theoretically possible?
- On a long enough timescale will today's dumps/landfills eventually turn into a certain kind of rock layer?
- If a high HRV is good, how come arrhythmia is not? What is the link between HRV and heart rate frequency then?
- Why did sauropsida become the dominant terrestrial clade after the P-T extinction event?
- If all dogs came from wolves, how did we get so many different breeds etc?
- How do we know the size/age of the observable universe?
- How to bombs actually cause damage?
- What does it mean to have better depth perception than the others?
- How is neuroelectricity generated in the brain?
- How do pilots and astronauts prevent themselves from passing out due to extreme G-Force?
- How is behaviour innate? How can animals replicate behaviour that they have never observed?
- How do astronomers estimate the size of distant galaxies?
- What happens if the speed of sound reaches the speed of light?
- Since we already know that being overweight negatively impacts fertility, does today's medical understanding of age and fertility assume a normal BMI?
- Cancerous cells can metastasize. Can normal cells do the same thing? Why/why not?
- Is there a temperature at which all molecular bonds separate and only "pure" elements can exist?
- If we flip flop between glacial periods and non- glacial periods (ice ages) why then is global warming considered so dire? Wouldn't it mitigate the severity of the next ice age?
- [Biology] What animals have the longest periods of sexual maturity?
- Are there the same number of Protons as Electrons in the Universe? If so, why?
- How does the chemical "spicyness" in Wasabi (Allyl Isothiocyanate) work?
| Posted: 21 Jul 2019 07:13 AM PDT |
| If I focused on my heart hard enough, could I control my heartbeat? Posted: 20 Jul 2019 08:27 AM PDT Even though the heart is an involuntary muscle, if I sat down and thought hard enough, would it be possible to control my heartbeat? If I can't, what prevents me from learning how to do this? EDIT: Since some people are talking about meditation, for an extreme, if I just said 'fuck this' can I give myself a heart attack or make my heart stop (I'm not suicidal and this is just a thought experiment). [link] [comments]  |
| Posted: 21 Jul 2019 07:05 AM PDT |
| Posted: 21 Jul 2019 01:28 AM PDT |
| Posted: 21 Jul 2019 06:38 AM PDT Hi guys, I'm looking into heart rate variability and such related topics. I got from my readings that HRV is "good" when high. But doen't a high vaiability means that your heart is not beating at a constat rate? And if so isn't it arrhythmia? I'm definitly not an expert, so I apologize if I'm just totally missing a point here or misunderstanding something. If so thanks in advance for enlightning me! [link] [comments]  |
| Why did sauropsida become the dominant terrestrial clade after the P-T extinction event? Posted: 21 Jul 2019 06:33 AM PDT Like the headline states. My question is what the theories for why sauropsids became the dominant terrestrial life form after the great dying when therapsids had been so successful previously during the permian? I can understand that there might have been more small sauropsids species but I'm sure there were several small therapsid species as well. Is it the sauropsids being ecthothermic a possible reason? [link] [comments]  |
| If all dogs came from wolves, how did we get so many different breeds etc? Posted: 20 Jul 2019 05:22 PM PDT Like how do we have pugs and Aussies and all of that jazz? Might be a dumb question but I would love to know! [link] [comments]  |
| How do we know the size/age of the observable universe? Posted: 20 Jul 2019 03:06 PM PDT I know the number thrown around is somewhere around 93 billion light years across and the age is 13.something billion years, but how have we determined that? Light from the edges of the observable universe shouldn't have reached us yet, so we wouldn't have been able to measure any kind of phase shift, right? [link] [comments]  |
| How to bombs actually cause damage? Posted: 20 Jul 2019 05:06 PM PDT I understand there is some form of chemical reaction inside that causes the explosion but how do they cause so much damage? Bombs are so small relative to the mass destruction they can cause it just doesn't physically seem possible. I hope this question makes sense! [link] [comments]  |
| What does it mean to have better depth perception than the others? Posted: 21 Jul 2019 04:05 AM PDT Do you see the edges of objects better? I see the world just fine and my depth perception is not as good as other people. [link] [comments]  |
| How is neuroelectricity generated in the brain? Posted: 20 Jul 2019 04:52 PM PDT We know that neural signals are a kind of electric signals in the brain that fire here and there to create a conscious circuit. But where does that electricity come from? [link] [comments]  |
| How do pilots and astronauts prevent themselves from passing out due to extreme G-Force? Posted: 20 Jul 2019 10:39 PM PDT |
| How is behaviour innate? How can animals replicate behaviour that they have never observed? Posted: 20 Jul 2019 07:35 AM PDT So, I know that some behaviour in animals is innate, I also understand why, but I don't understand how (except reflexes). Like, how do animals know mating rituals, or what to do when they see another animal, or how to hunt, or howl, etc.. And I know that there are instincts, but where do they come from? As in, what part of the brain, is it all subconscious? I'm sorry if I'm not explaining it well. I can't seem to find an answer on Google. [link] [comments]  |
| How do astronomers estimate the size of distant galaxies? Posted: 20 Jul 2019 10:09 PM PDT |
| What happens if the speed of sound reaches the speed of light? Posted: 20 Jul 2019 03:59 PM PDT Just thought I would mention I am going into grade 12(senior) so if their is something I will learn that will answer this question in that year well then this post is useless. So I was thinking that since the speed of sound increases with the temperature( v = 331.5 m/s + 0.606m/s * T) could the speed of sound reach or break the speed of light? and if so what would happen? The temperature would have to be 494,707,026 degrees Celsius so where does that happen? [link] [comments]  |
| Posted: 20 Jul 2019 09:26 PM PDT Or do most studies look at age and fertility decline with overweight and obese women lumped in the same category as normal bmi? [link] [comments]  |
| Cancerous cells can metastasize. Can normal cells do the same thing? Why/why not? Posted: 20 Jul 2019 09:22 PM PDT |
| Is there a temperature at which all molecular bonds separate and only "pure" elements can exist? Posted: 20 Jul 2019 08:24 PM PDT If so, could the resulting mixture be distilled or otherwise separated (e.g. via centrifuge) so that all pure elements could be recovered individually? [link] [comments]  |
| Posted: 20 Jul 2019 06:57 PM PDT I have been reading a lot about ice ages recently and the different hypothesis to what causes them, the massive ice sheets covering North America (2miles thick) and how devastating an Ice age would be to human population and civilisation. Also during history when the planet warmed humans done really well. I know C02 is a catalyst to warming but is not the only factor in warming, going off history is seems like a relatively small part in a very complex equation. I know about feed back loops and climate models predicting hotter planet but the earth has been a lot hotter before will more carbon in the atmosphere yet we the planet still went into ice ages. So are Humans this time solely responsible for this ice age ending? Or is the planet on a natural heating cycle anyway and humans are just making it worse? [link] [comments]  |
| [Biology] What animals have the longest periods of sexual maturity? Posted: 20 Jul 2019 06:55 PM PDT |
| Are there the same number of Protons as Electrons in the Universe? If so, why? Posted: 20 Jul 2019 06:09 PM PDT This article (http://cosmology.berkeley.edu/Education/CosmologyEssays/The_Standard_Cosmology.html) states that Proton creation and Electron creation after the Big Bang occurred on different schedules. As such, there would seem to be no reason for their numbers to be equal. Are they equal and, if so, why? [link] [comments]  |
| How does the chemical "spicyness" in Wasabi (Allyl Isothiocyanate) work? Posted: 20 Jul 2019 04:55 AM PDT Capsaicin, the chemical that makes chilli's spicy, simulates the heat-sensors of the tongue (as far as I know). I was eating some sushi and got a bit too much wasabi and it felt like my nose was about to explode. How does the chemical in wasabi work and why is it more of an explosion rather than a long burn? [link] [comments]  |
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