In dim light, why do unlit objects appear to lag behind lit objects? |
- In dim light, why do unlit objects appear to lag behind lit objects?
- Will the melting polar ice caps actually bring on an ice age due to lower ocean salinity?
- Are people who have already had covid or been vaccinated, more likely to be asymptomatic?
- Do plant roots excrete solid or liquid waste?
- Are there any predators or parasites that feed on intestinal worms, when they're in the intestines?
- How is it possible for all points on a rotating disc to be moving at the same speed?
- Are there animal traditions?
- Do people who lose one of their senses due to an accident or an illness experience intense changes in brain activity shortly after?
- Do Animals have Blood Groups like humans?
- New CDC Study - Vaccine vs Natural Immunity study?
- Are mating strategies of bonobos and chimps genetic or learned? If you raised a chimp among bonobos, would he adapt and pass on their behavior and vice versa?
- What individual dinosaur species existed for the longest period of time?
- Aurora borealis/Aurora Australis are frequent on earth and noticeable from space. Has there been any instances of observing this on any other planets?
- Whats left in the soil onece it becomes "barren" & can soil be truely "barren"?
- When animals eat other animals whole, how does the predator not get sick from any feces in the prey animal?
- is blood pressure higher in a vessel with a large diameter or small diameter and why?
- does condition 1 weather in Antarctica inhibits communication?
- Are there any animals that have symbiotic parasites and evolved under the expectation of the parasite's presence?
- Is the concept of a syllable the same between all languages?
| In dim light, why do unlit objects appear to lag behind lit objects? Posted: 01 Nov 2021 06:15 PM PDT This is something I originally noticed while playing my gameboy late at night. There was just enough light to see the gameboy itself, which had a small 'on' indicator light. I noticed that moving the gameboy would make the light appear to dash ahead, with the rest of the gameboy appearing to lag behind. This seems to happen with anything backlit in a dark room. A cell phone's entire screen will jump ahead relative to your hand holding it, though smaller pinpoint lights are easier to notice the difference. What's going on to make this happen? I suspect it has something to do with the eye's rods and cones either detecting or transmitting information at different rates, but haven't been able to find anything to confirm it. [link] [comments]  |
| Will the melting polar ice caps actually bring on an ice age due to lower ocean salinity? Posted: 02 Nov 2021 03:34 AM PDT So I've been reading a book called "A short history of nearly everything" by Bill Bryson. (Very good by the way). It brought up some topics that got me thinking. As the ice caps melt, huge quantities of fresh water are dumped into the oceans, which I imagine over time would decrease the salinity of the ocean (making it a higher percentage of fresh water). Because fresher water is easier to freeze, would we not see a rebound of ice forming at the poles, and therefore spreading a lot faster, and with the ice reflecting the heat of the sun, be able to expand even further and bring on an ice age? The reason I brought this up was because I was reading about the Messinian Salinity Crisis that supposedly happened about six million years ago that supposedly brought on the last ice age. For those of you who aren't too familiar with it; what is thought to have happened was that the continents shifting closed up the straight of Gibraltar, and without constant flow ended up evaporating the Mediterranean. As an entire sea began evaporating, is was brought back to earth as fresh water (rainfall), which desalinised the oceans enough to let it freeze a whole lot easier, reflect the sun a whole lot more and therefore caused an ice age. [link] [comments]  |
| Are people who have already had covid or been vaccinated, more likely to be asymptomatic? Posted: 01 Nov 2021 04:23 PM PDT |
| Do plant roots excrete solid or liquid waste? Posted: 01 Nov 2021 03:24 PM PDT |
| Are there any predators or parasites that feed on intestinal worms, when they're in the intestines? Posted: 02 Nov 2021 05:13 AM PDT |
| How is it possible for all points on a rotating disc to be moving at the same speed? Posted: 01 Nov 2021 05:14 PM PDT This is something that just hit me while I was thinking about planetary rotation. In theory, the length of a day should be different depending on your latitude, since the actual distance covered by any line of latitude changes depending on how close or far you are from the equator. However, everyone everywhere has a 24 hour day, even though the actual distance they're traveling as the earth rotates varies everywhere from 0 at the poles, to the circumference of the Earth at the equator. I've heard about this paradox every since I was little, but I've never really gotten an answer to it. If every point on earth's surface is rotating around Earth's axis at the same speed, then how can everyone have the same length of day if the actual distance they're covering is different? Does this mean that any planet rotating at the same speed as earth would have a roughly 24-hour day, completely regardless of its actual size? If latitude x has the same length of day as Earth's equator, then that should mean a planet with an equatorial circumference of x should also have a 24 hour day as long as its rotating at the same speed. How is this possible? [link] [comments]  |
| Posted: 02 Nov 2021 12:13 AM PDT Hi, So basically my question is whether animals (lets say mammals) have most of their behaviour instinctively or if there will be big differences if you removed one generation from their parents immediatly. Would they eventually act the same as those with an upbringing or are there "traditions" that first have to be taught to them by someone else? If it turns out to be the same, just delayed, thats not what I mean. I mean behaviour that, like a language or tradition, has to be carried through multiple generations to survive. I hope just saying "mammals" is not too general of a question (as behaviour can be very different). Feel free to name a species of your choice if you don't want to generalize. Thanks for any answers [link] [comments]  |
| Posted: 01 Nov 2021 10:02 AM PDT |
| Do Animals have Blood Groups like humans? Posted: 01 Nov 2021 07:03 AM PDT If so, can their blood be transfused into humans or the other way around? [link] [comments]  |
| New CDC Study - Vaccine vs Natural Immunity study? Posted: 01 Nov 2021 06:26 AM PDT I am confused about the CDC study. Hoping someone can help clarify. The study states there were patients that were hospitalized with a COVID-like illness. 'Laboratory-confirmed SARS-CoV-2 infection was identified among 324 (5.1%) of 6,328 were fully vaccinated persons and among 89 of 1,020 (8.7%) unvaccinated .' How I am interpreting the study. What exactly do the mean by covid-like illness? I am thinking they had symptoms similar to COVID but didn't necessarily have COVID. Of the people who had a covid-like illness 5.1% of people who were vaxxed with no previous infection actually had COVID. The unvaxxed people with a previous infection who had a covid-like illness 8.7% of them had COVID. If my interpretation is correct, how does this prove vaccine immunity is superior to natural immunity? Am I misinterpreting something? I don't understand how we can take percentages from something vague like a 'covid-like' illness and make a conclusion based on that. Thanks! https://www.cdc.gov/mmwr/volumes/70/wr/mm7044e1.htm?s_cid=mm7044e1_w [link] [comments]  |
| Posted: 01 Nov 2021 03:00 AM PDT |
| What individual dinosaur species existed for the longest period of time? Posted: 01 Nov 2021 07:52 AM PDT For example, Brontosaurus is said to have lived (according to Wikipedia) 156.3-146.8 million years ago so roughly 10 million years. Have any lasted 15 million? 20? 30? Birds are of course welcome, but I would prefer non-avian dinosaurs if possible. [link] [comments]  |
| Posted: 01 Nov 2021 10:30 AM PDT Surely Earth can't be the only planet experiencing this phenomenon. [link] [comments]  |
| Whats left in the soil onece it becomes "barren" & can soil be truely "barren"? Posted: 01 Nov 2021 01:53 AM PDT Thank god you guys are here, i was having a long thought out conversation the other day and came upon the concept of barren soil. Please explain this to me in a way i can understand! Lets start out with fertile soil; Now we plant plants until all the nutrients have been depleted, whats left in the soil? To my understanding we have organisms that can derive energy from damn near any materials in existence. I mean theres plastic consuming mushrooms at this point! In my mind, if there is a physical material there. then in my mind there is an element or nutrient there. which can be used by an organism for energy. The only thing i can think of (Becides Drought Conditions) Is IF the plants consumed everything useable, that would only leave concentrated deposits of poisons. I deeply appreicate an explanation, the more detailed and in depth the better! Thanks you guys and gals!! :D >.> >.< <.< [link] [comments]  |
| Posted: 31 Oct 2021 06:17 PM PDT |
| is blood pressure higher in a vessel with a large diameter or small diameter and why? Posted: 31 Oct 2021 11:09 PM PDT I've always thought blood or even water in general would have higher pressure in a tube with a smaller diameter due the "squeezing" of the walls. But after reading about how pressure is higher in an afferent arteriole than in an efferent arteriole (diameter of afferent > efferent), I realized my assumption may have been wrong all along. [link] [comments]  |
| does condition 1 weather in Antarctica inhibits communication? Posted: 31 Oct 2021 10:56 PM PDT So recently I saw a viral video about condition 1 weather in Antarctica, I wonder if this also inhibits satcom or other wireless communications. [link] [comments]  |
| Posted: 31 Oct 2021 06:39 PM PDT For a hypothetical example, if an animal that used to have a type of skin but a parasite replaces it with better skin so the animal stops growing the skin over generations. Probably not skin specifically but anything in general! [link] [comments]  |
| Is the concept of a syllable the same between all languages? Posted: 31 Oct 2021 08:51 PM PDT |
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