- If weight is the measured effect of gravity on an object, and gravity is stronger the closer to the object’s center of mass the measuring object is, do objects high in the atmosphere weigh less than those on the ground, from a physics standpoint?
- Does modern sedentary lifestyle contribute to the rising amount of depression?
- How does our body heat itself up so significantly when it's sick?
- Are negative mass and anti matter the same thing?
- When did we know that birds are descended from dinosaurs?
- Is it possible to stop a reaction midway to study an intermediate?
- How is angular momentum conserved as orbiting bodies become tidally-locked?
- Would a nuclear explosion in outer space actually do anything?
- How does NASA come up with mission names?
- What would the Solar neutrino spectrum look like?
- why is the moon so spherical if it doesn't spin on it's own axis?
- Why don't we set the speed of light to exactly 300 million meters per second and 1 meter to 1/300,000,000?
- How do ruminants send food to the rumen and chewed cud to the omasum?
- Is Bioelectrogenesis possible for the human body?
- Are Cichlids in the perch family?
- Why is Xenon used to power ion thrusters instead of other noble gases?
| Posted: 06 Dec 2018 11:10 PM PST |
| Does modern sedentary lifestyle contribute to the rising amount of depression? Posted: 07 Dec 2018 06:40 AM PST Hello r/askscience! Nowadays people are less physically active, and the rate of depression has been rising. Physical exercise is regularly advised as a remedy for depression and other mental health issues. Could it therefore be, that normal mental health requires a "homeostatic" amount of physical activity? Does sedentary lifestyle play a part in the grand scheme of more people becoming depressed? Thanks for the answers :) [link] [comments]  |
| How does our body heat itself up so significantly when it's sick? Posted: 07 Dec 2018 06:53 AM PST What exactly does it do to accomplish this? Presumably the fevered person is just lying in bed all day, so how does the body produce so much more heat than usual? I'd imagine it has something to do with burning more energy in your body, but it's not like the chemical energy stored in our fat can be directly converted to thermal energy, right? [link] [comments]  |
| Are negative mass and anti matter the same thing? Posted: 06 Dec 2018 07:26 PM PST |
| When did we know that birds are descended from dinosaurs? Posted: 07 Dec 2018 07:12 AM PST I remember back in school, some 25 years ago, that I was taught that maybe birds and dinosaurs were related but that there was no real evidence. Did paleontologists (or whoever knows these things) not know back then, or was my teacher's information just outdated? [link] [comments]  |
| Is it possible to stop a reaction midway to study an intermediate? Posted: 07 Dec 2018 07:08 AM PST For example, in a synthesis of an inorganic compound (so enzymes will not necessarily be involved), is there a practical means of halting the progress of a reaction to study intermediates? [link] [comments]  |
| How is angular momentum conserved as orbiting bodies become tidally-locked? Posted: 06 Dec 2018 04:59 PM PST |
| Would a nuclear explosion in outer space actually do anything? Posted: 06 Dec 2018 12:12 PM PST A nuclear explosion on earth is so damaging because of the intense heat of the fissioned material results in the super-heated atmosphere around it rapidly expanding outward into a shock wave. Its the same way a lightning bolt makes window-rattling thunder, just amplified by a billion. So in outer space, with no atmosphere to expand, wouldn't a nuclear reaction just make a point of intense heat until the material was used up, with no actual "shock wave" of pressure or material expanding outward? Is the idea of detonating a nuclear bomb next to an asteroid to break it apart just science fiction? [link] [comments]  |
| How does NASA come up with mission names? Posted: 06 Dec 2018 03:31 PM PST Some of the names that NASA gives missions make sense, like Gemini was called that because the two-person capsule. Others, like InSight, don't make a lot of sense to me. It's actually called "The Interior Exploration using Seismic Investigations, Geodesy and Heat Transport" and InSight is the short version, but which of these names came first? Do they come up with the short name and then give it a fancy name, or come up with the fancy name and shorten it? [link] [comments]  |
| What would the Solar neutrino spectrum look like? Posted: 06 Dec 2018 02:07 PM PST The Solar electromagnetic spectrum has a distinct character, full of emission and absorption lines. What would an analogous spectrum "look" like if we observed the various frequencies/wavelengths of neutrinos coming from the sun? [link] [comments]  |
| why is the moon so spherical if it doesn't spin on it's own axis? Posted: 06 Dec 2018 03:03 PM PST i thought the moon was the result of an impact of another mass with the earth. How did it become an almost perfect sphere if it doesn't spin? [link] [comments]  |
| Posted: 06 Dec 2018 08:24 PM PST |
| How do ruminants send food to the rumen and chewed cud to the omasum? Posted: 06 Dec 2018 07:04 AM PST From what I understand, ruminants (e.g. cows) eat their food where it's first broken down in the first two chambers of their stomach creating cud. Then they regurgitate the cud and chew it to break it down further before swallowing again where digestion is then completed by the last two stomach chambers and intestines. When swallowing food or cud, what is the mechanism that "selects" where it ends up? [link] [comments]  |
| Is Bioelectrogenesis possible for the human body? Posted: 06 Dec 2018 11:26 AM PST I want to start out by saying that I'm working on a fictional script, in which my characters have been biologically modified with some of natures phenomenons/more complex features. I'm not using magic as a cop out to give my characters powers, although visually, I'd like to exaggerate the visuals a bit. All in all, I'm trying to be scientifically conscientious. One of my characters is going to be capable of Bioelectrogenesis. I want this character to be able to discharge a bolt of electricity visually similar to the way Thor shoots a bolt of lightning at Iron man in the first Avengers movie. From what I understand, the human body could theoretically be a home to cells that create an electrical imbalance potential. In order to have such a biological feature, the body would need to produce some kind of fuel to sustain Bioelectrogenesis. My rudimentary recipe is: Synthetic Hunter's organ (found on an electric eel) + Adrenaline containing ATP = Human ability to discharge electricity. The problems I'm facing are being able to explain (or at least know the reason in my head) how my character can emit a bolt of electricity from his/her arm, and how this would be possible in on land rather than in water like an eel. [link] [comments]  |
| Are Cichlids in the perch family? Posted: 06 Dec 2018 08:53 AM PST I've recently been quite confused around this. are cichlids still a type of perciform fish? or is cichliformes a new group that isn't perciform? thanks. [link] [comments]  |
| Why is Xenon used to power ion thrusters instead of other noble gases? Posted: 06 Dec 2018 07:49 AM PST |
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