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Wednesday, July 21, 2021

Can adrenaline actually give you the strength to lift a car and how does it work?

Can adrenaline actually give you the strength to lift a car and how does it work?

Can adrenaline actually give you the strength to lift a car and how does it work?

Posted: 21 Jul 2021 05:31 AM PDT

Is chemotherapy better now than it was 10 years ago?

Posted: 20 Jul 2021 08:58 AM PDT

Is the process relatively unchanged or is it more effective / has less side effects than it would have had say 10 years ago? What might we expect it to look like in 10 years from today?

submitted by /u/thepalfrak
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Do fungi have immune systems?

Posted: 20 Jul 2021 11:52 AM PDT

Do we have any evidence for evolutionary/behavioural adaptation by the barn swallow? It has coexisted in a mutually beneficial relationship with humans for millennia, and swallows are remarkably tolerant of humans near nest sites. Has this tolerance been selected for?

Posted: 20 Jul 2021 09:18 AM PDT

Why has early detection of diseases via dogs not found widespread use in medicine?

Posted: 20 Jul 2021 05:41 PM PDT

I have heard how dogs can detect diseases such as cancer or now covid with a surprisingly high accuracy. However I have not seen widespread use of dogs in such a manner.

submitted by /u/sweetspunch
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Why is the specific heat capacity of saltwater lower than that of pure water?

Posted: 21 Jul 2021 05:35 AM PDT

Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science

Posted: 21 Jul 2021 07:00 AM PDT

Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary Science

Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...".

Asking Questions:

Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists.

Answering Questions:

Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience.

If you would like to become a member of the AskScience panel, please refer to the information provided here.

Past AskAnythingWednesday posts can be found here. Ask away!

submitted by /u/AutoModerator
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Do continuously mutating viruses like the common cold waste B cell memory 'space' in our bodies or otherwise dilute our immune system in some way?

Posted: 21 Jul 2021 06:33 AM PDT

My understanding is that a B cell remembers a specific pathogen, so I am assuming most pathogens you have ever encountered have B cells made for them hanging out where they might some day be needed. Are there a limited amount of these cells (or total cells?) you can have in your body? Like, does having 30 different versions of useless common cold B cells mean that the area they hang out in is now diluted and can hold less useful B cells?

submitted by /u/Chaosbuggy
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Given that 5G is line-of-sight, how does it work on our phones?

Posted: 20 Jul 2021 11:03 PM PDT

When a balloon pops! What makes the pop sound? The air escaping the balloon or the balloon splitting (popping) open?

Posted: 20 Jul 2021 11:27 AM PDT

[ Africa Rift / EARS ] Help understanding Tanzanian Divergence, and KT Rift & Kivu Rift differences?

Posted: 21 Jul 2021 02:42 AM PDT

Welcome,

I am interested in learning more of the science of the Rifts. Primarily the Tz Divergence of the KT Rift. Secondarily, why the differences between the KT Rift and Kivu Rift?

Recently I have been spending time in Arusha and am curious about Mts Meru / Kilimanjaro relation to the KT Rift and the nature of the splintering of the KT Rift. Where does the rift end and fractures begin? I assume Ngorongoro? After much searching on Google, Wikipedia and Scihub I have learned about the Tanzanian Divergence and a large reservoir of lava under us. I feel comfortable with basic research (google/wiki) but my weeks of Scihub research I am acquiring more questions than answers.

Also, interested in the differences between the KT Rift and Kivu Rift. Specifically the cause, and why they differ so much. Kivu is very clean as lakes with large volcano ranges between them. KT also has this (Natron/Ngorongoro/Eyasi) but with a lot more around it. Such as Milima Meru / Kilimanjaro, or Mt Kenya not being on the rift. I assume this has to do with the reservoir of lava and goes back to my primary question? Any reason these great Mounts are so far to the east of the KT Rift?

Extra Credit: I am from between both rifts. South East of Lake Victoria. In my reading I learned we are separate from the Africa east of Ngorongoro and West of Kivu. I am unclear of the south east separation of our plate. I assume it is Mts Udzungwa?

Thank you!

submitted by /u/Kuimba_Nyimbo
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What exactly is unhealthy air quality?

Posted: 20 Jul 2021 07:09 PM PDT

Hey what does it mean when the weather says "Unhealthy air quality for sensitive groups" and shows a number, for example here 113. What is this number referencing? How do they determine what's healthy vs not healthy air and why is it happening?

submitted by /u/mahpeaches
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Is it true that whenever you do something, you create new neural pathways within your brain adapted to such thing?

Posted: 20 Jul 2021 08:54 AM PDT

Why does ibuprofen reduce inflammation?

Posted: 20 Jul 2021 09:51 AM PDT

In specific how does it help with costochronditis?

submitted by /u/imperfect_simplicity
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What receptors mediate the taste of milk?

Posted: 20 Jul 2021 09:00 AM PDT

After drinking dairy milk all my life and switching to oatmilk for a few months, I now find the taste of milk repulsive. Lots of questions here focus individual variability in taste perception for certain foods. But is it known which taste receptors 'die out' when I stop drinking dairy? or does oatmilk specifically causes others to predominate? Or even something related to mouth flora?

submitted by /u/nickoskal024
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Are film grain and digital noise caused by the same thing?

Posted: 20 Jul 2021 08:23 AM PDT

So I get that film grain is caused by larger silver particles in higher ISO films, but digital noise is also caused by high ISO.

Is this just a coincidence?

Not sure what to tag this with so I'll just go with physics.

submitted by /u/theangleopposite
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Are there cases of rocks from Earth finding their way to Mars?

Posted: 19 Jul 2021 07:54 PM PDT

It is well known that Martian Meteorites frequently find their way to Earth. This is one of the ways by which we can study the geology of Mars and such rocks often contain evidence that Mars was once habitable. But does the opposite ever happen? Are there cases of rocks from Earth finding their way to other planets like Mars? Is it much rarer for such to occur due to the strength of Earth's gravity and magnetic field as well as the thickness of Earth's atmosphere compared to that of Mars? If so, what could cause such freak events to occur? If such ever occurred, and let's say the rocks happen to be carrying microscopic organisms from Earth, would they contaminate Mars once the rocks got there?

submitted by /u/EthanJacobRosca
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Were rats/ mice as ubiquitous pre-agriculture as they are now?

Posted: 19 Jul 2021 05:14 PM PDT

Rats, mice, "pest" animals in general really. Go to any major city at night, and you'll undoubtedly see a rat run across the street. But would pre agricultural human camps have the same sights, or were their populations naturally kept in check?

submitted by /u/LiveAndDie
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Does wrapping our food in plastic cause harm to the food?

Posted: 19 Jul 2021 03:25 PM PDT
vào lúc No comments:

Tuesday, July 20, 2021

Why are COVID serology tests not recommended as a measure to estimate protection in vaccinated individuals?

Why are COVID serology tests not recommended as a measure to estimate protection in vaccinated individuals?

Why are COVID serology tests not recommended as a measure to estimate protection in vaccinated individuals?

Posted: 20 Jul 2021 02:50 AM PDT

Presumably, if I have a lot antibodies for a virus floating around - I'd be better prepared (on average) to avoid infection, won't I?

submitted by /u/BestBoyCoop
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Distance contraction in non-relativistic spacetime? I suddenly feel so confused

Posted: 20 Jul 2021 01:44 AM PDT

  • A and B travel 100km together.
  • For someone on the ground, A speed is 10km/h, B speed is 20km/h.
  • That means from A point of view, B speed is 10km/h.
  • In non-relativistic spacetime, the amount of time for B to finish the journey must be the same for both A and for someone on the ground, aka 5 hours.
  • Because speed is distance divided by time, doesn't that mean, from A point of view, B has traveled only 50km instead of 100? This conclusion feels wrong, but I don't know where.

Thanks.

submitted by /u/1954isthebest
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If lipofection can introduce DNA material into a mammalian cell in vitro, is this possible to do in a live animal or human? Why or why not?

Posted: 20 Jul 2021 04:15 AM PDT

Why does a 1.5 C increase in global temperature seem to translate to a 10 C increase in temperature in every country?

Posted: 19 Jul 2021 09:42 PM PDT

Climate science is definitely not my field, I'm just really confused about it. Are there areas of the world that barely see any change in temperature/somehow become colder and that's why it's such a seemingly low average increase with what feels like disproportionate observed effects? Because a 1.5 C increase versus summer temperatures going from 15 C to 30 C seems like a weird mismatch.

submitted by /u/Redqueenhypo
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Is there a "Lyman" and "Balmer" series for different elements other than Hydrogen?

Posted: 20 Jul 2021 01:14 AM PDT

I'm trying to find the emission spectra of different elements categorized by jumps from all higher energy levels back down to to the n 1 and n 2 levels; a sort of "Lyman" and "Balmer" series of any given element.

I'm trying to determine if there are any harmonic considerations between the emission spectra, using the two "Lyman" and "Balmer" categories to determine a sort of "fundamental" for each elemental consideration.

submitted by /u/MelloCello7
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How would the images on the Golden Record (on Voyager 1) be displayed?

Posted: 19 Jul 2021 01:06 PM PDT

Is there like some sort of projector that lights up or something? I have no idea how the images will appear. I guess I understand how to start it, however what happens after?

submitted by /u/phatrhat
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How can taxonomists create a species after finding just one fossil?

Posted: 19 Jul 2021 08:34 AM PDT

I was looking at species in the Homo genus and found some like cepranensis, longi, and tsaichangensis which only had one fossil found. Why are those considered different species instead of anomalies?

submitted by /u/_Princess__Consuela_
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What do the galactic orbits of the Voyager space probes look like?

Posted: 19 Jul 2021 04:46 AM PDT

So I don't know if I'm just bad at googling or if there's little information about this subject, but how different are the Voyagers' orbits from the sun's orbit around the center of the Milky Way?

Now, I know that galactic orbits are a bit more complicated than solar system orbits (more wobble up and down etc), but the basics still more or less apply, right? Most articles I've read that go in this direction act like Voyager will be moving away from the sun at a constant rate basically forever, which is just not how orbits work from what I know.

So basically my question is, what are the periapsides and apoapsides of the galactic orbits of the Voyager space probes?

submitted by /u/Toonfish_
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How far does a “Coastal City” have to be from the beach so it isn’t affected by the expected rising sea-level?

Posted: 19 Jul 2021 11:55 AM PDT

I assume direct coastal cities will be impacted in some way but what I don't understand is how far inward a city has to be to be considered a "safe distance"

submitted by /u/TheSilentPhilosopher
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Could entropy of closed system decrease owing to gravity?

Posted: 19 Jul 2021 05:19 AM PDT

Second law (of thermodynamics) states that entropy of closed system never decreases.
Let's imagine you have a closed Universe where you distribute the mass completely randomly and stationary (for simplicity of imagining this example). So entropy is the maximum it can be, right? Complete random distribution of matter should equal to highest entropy (I'm just an amateur learner).

Now let the time pass. Gravitational force will eventually start attracting certain clusters of matter together (because random distribution of matter ensures that some local place has more matter than other). As chunks of matter collapse together and form some objects (probably also start to orbit each other). It's more ordered system now, albeit still put together only by gravity based on its initial randomness. Did entropy of this system decreased?

submitted by /u/justdvl
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Are banner-towing airplanes more susceptible to lightning?

Posted: 18 Jul 2021 07:44 PM PDT

Watching an airplane tow a humongous banner recently, I wondered if the banner built up a static charge from being pulled through the air, and would attract lightning. I also have a related question: wouldn't a banner-towing plane ground itself when grabbing the yoke of a banner lying on the ground? Does the banner being drug across the ground generate a charge?

​

It just seems to me that a banner-towing plane would be a lightning magnet for any of these reasons.

submitted by /u/TrogdorLLC
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vào lúc No comments:

Monday, July 19, 2021

Between foam, liquid, or bar, what is the best type of soap for handwashing?

Between foam, liquid, or bar, what is the best type of soap for handwashing?

Between foam, liquid, or bar, what is the best type of soap for handwashing?

Posted: 19 Jul 2021 05:14 AM PDT

Given that the tectonic plates are (slowly but constantly) moving, what does it mean when geologists/palaeontologists say something happened in (for example) the region of England hundreds of millions of years ago?

Posted: 18 Jul 2021 06:18 AM PDT

AskScience AMA Series: We're UCSF neuroscientists who were featured in the NY Times for developing a neuroprosthesis that enabled a man with severe paralysis to communicate in full sentences simply by attempting to speak. AUA!

Posted: 19 Jul 2021 04:00 AM PDT

Hi Reddit! We're a team of neuroscientists at the University of California, San Francisco (aka UCSF). We just published results from our work on technology that translates signals from the brain region that normally controls the muscles of the vocal tract directly into full words and sentences. To our knowledge, this is the first demonstration to show that intended messages can be decoded from speech-related brain activity in a person who is paralyzed and unable to speak naturally. This new paper is the culmination of more than a decade of research in the lab led by UCSF neurosurgeon Edward Chang, MD.

Off the bat, we want to clarify one common misconception about our work: We are not able to "read minds" and this is not our goal! Our technology detects signals aimed at the muscles that make speech happen, meaning that we're capturing intentional attempts at outward speech, not general thoughts or the "inner voice". Our entire motivation is to help restore independence and the ability to speak to people who can't communicate using assistive methods.

Our work differs from previous neuroprostheses in a critical way: Other studies have focused on restoring communication through spelling-based approaches, typing out letters one-by-one. Our team is translating signals intended to control muscles of the vocal system for speaking words, rather than signals to move the arm or hand to enable typing or control of a computer cursor.

Also, we want to note that this is very early work conducted with a single person as a proof of concept. This study participant "Bravo-1", to whom we're extremely grateful, is a man in his late 30s who suffered a devastating brainstem stroke that severely damaged the connection between his brain and his vocal tract and limbs. Because he is unable to speak naturally or move his hands to type, to communicate he typically uses assistive technology controlled by minute and effortful head movements.

To summarize the approach used in this study, we surgically implanted a high-density electrode array over his speech motor cortex (the part of the brain that normally controls the vocal tract). We then used machine learning to model complex patterns in his brain activity as he tried to say 50 common words. Afterwards, we used these models and a natural-language model to translate his brain activity into the words and sentences he attempted to say.

Ultimately, we hope this type of neurotechnology can make communication faster and more natural for those who are otherwise unable to speak due to stroke, neurodegenerative disease (such as ALS), or traumatic brain injury. But we've got a lot of work to do before something like this is available to patients at large.

We're here to answer questions and, hopefully, to raise awareness of communication neuroprosthetics as a field of study and means of improving the lives of people around the world. Answering questions today are the co-lead authors of the new study:

  • David A. Moses, Ph.D., postdoctoral engineer
  • Sean L. Metzger, M.S., doctoral student
  • Jessie R. Liu, B.S., doctoral student

We'll be on at 11:00am PDT (2 PM ET, 18 UT). Ask us anything!

Username: /u/UCSF_official

submitted by /u/AskScienceModerator
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What caused the New Madrid earthquakes located in the dead center of the North American tectonic plate, far away from any subduction zone or slip-strike faults?

Posted: 19 Jul 2021 12:18 AM PDT

I've googled this thoroughly and can't find an answer that is complete and concise. Do we really just not know?

submitted by /u/OhhWhyMe
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Does prolonged anaerobic respiration reduce immune function?

Posted: 19 Jul 2021 05:41 AM PDT

Hi all, My father is under the impression that prolonged anaerobic respiration (in the form of rigorous exercise - such as cardio in the gym) reduces the immune function of an induvidual as it puts their body in a prolonged 'fight or flight' mode in which fewer 'resources' are allocated to the immune system.

He thinks that the lack of 'energy' allocated to the immune system and the increased levels of cortisol due to anaerobic exercise is the reason that people who have rigorous exercise routines and are physically very fit can suffer badly from COVID-19.

I've tried to research this as it doesn't make any sense to me but have been unable to find anything linking the two together. If anyone could shed some light on this for me I'd appreciate it, thanks :)

submitted by /u/Ellyrion
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Is north pole shift really gonna happen?

Posted: 18 Jul 2021 12:43 AM PDT

My mom's been real paranoid about it, and i was wondering if its true.

submitted by /u/probablyHaruki
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Living organisms that “travel” for work?

Posted: 18 Jul 2021 02:22 AM PDT

Most animals or living organisms seem to only move for either for feeding/flee from predators, or on a larger scale for environmental reasons seasonally.

I was wondering which living organisms move for work purposes. For example, bees move from flower to flower to collect pollen. Or beavers to find wood to build their dam (please correct me if i'm wrong).

Which other living organisms display similar behaviour, and why?

submitted by /u/terezoza
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Do insects such as tabanidae types die after wildfire smoke inhalation?

Posted: 17 Jul 2021 05:56 PM PDT

So smoke is made up of tiny particles and toxic gases of course.

Tabanidae insects such as horseflies and most insects breathe through tiny spiracles on their body. Theoretically the tiny particles would clog those spiracles up making them suffocate, correct?

I ask this because recently my area was covered by wildfire smoke from a fire 200km away. The day of and before the horseflies we're insufferable, hundreds would swarm your car as you pulled in to a parking lot. Today after the blanket of smoke was gone, the flies were too!

I was just wondering if someone could affirm my hypothesis or tell me why I am wrong.

submitted by /u/VanillaWinter
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What happens to alcohol from hand sanitizer after it evaporates?

Posted: 17 Jul 2021 06:47 PM PDT

I've been wondering what happens to the alcohol (isopropyl alcohol, ethanol, etc.) from things like hand sanitizer or different cleaners after it evaporates? Do these compounds break down due to instability over time, oxidize or react with other molecules? I appreciate any answers!

submitted by /u/RuralValley
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Why is thermal expansion different between different solids?

Posted: 17 Jul 2021 06:44 PM PDT

I was looking at a grill thermometer which uses a bimetallic strip to change shape. I understand that the expansion itself comes from heat and thus movement of the atoms being more spaced apart meaning more volume. Does the different expansions mean the atoms are naturally more spaced apart, or just more prone to movement (ie less inertia?), or am I way off the mark?

submitted by /u/steveman1123
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Do tectonic plates shifting affect the spin of the Earth?

Posted: 17 Jul 2021 07:52 PM PDT

I'm thinking of the 23 degree tilt and slight wobble. Has it always been that tilted or did it spin closer to 0 when Pangea was a thing (or earlier) and then started wobbling as a result of weight distribution being thrown off as the continents moved around?

submitted by /u/fatcage
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Can animals recognize body parts?

Posted: 17 Jul 2021 05:24 PM PDT

For example, i can look at a dog and under normal circumstances can tell which part is its head, the legs or tail. Can all animals do this or only some animals?

submitted by /u/Y0da_on_crack
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What is the physiology behind some people being able to burp on command?

Posted: 17 Jul 2021 08:03 PM PDT
vào lúc No comments:

Sunday, July 18, 2021

Is there an formula that can measure the 'popularity' of ratings?

Is there an formula that can measure the 'popularity' of ratings?

Is there an formula that can measure the 'popularity' of ratings?

Posted: 17 Jul 2021 02:06 PM PDT

For example, 1,000 upvotes and 10 downvotes would be considered much more popular than 5 upvotes and 0 downvotes despite the fact that the first case has more downvotes.

On the other hand, 200 upvotes and 800 downvotes would be considered much less popular than the original 5 upvotes and 0 downvotes despite the fact that the first case has more upvotes.

Is there a methodology that can be used to objectively measure how 'good' certain ratings are?

submitted by /u/plantThroway
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Does the pancreas produce insulin in anticipation of food?

Posted: 17 Jul 2021 04:27 PM PDT

As a type 1 diabetic I have to administer insulin some time in advance of eating. In the same way that someone salivates when expecting/smelling food, does a normal pancreas release insulin or "get ready" to release it?

submitted by /u/Yonboyage
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Are all retroviruses dangerous and lethal?

Posted: 17 Jul 2021 05:50 PM PDT

I know we have HIV the most notorious and well known of them all but i hear that there is an abundance of retroviruses out there. Are there any ones that are spread through air or droplets?

Do all of them prove to be lethal to their infected hosts?

submitted by /u/GeneticJail
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What differs in the brain/body when moving, say a finger, compared to just thinking about moving it?

Posted: 17 Jul 2021 09:40 AM PDT

Are male animals that possess extremely ornate feathers or other decorations compared to the more down to earth and dour females of the species considerably more likely to suffer from predation than females due to their lack of camouflage?

Posted: 16 Jul 2021 08:21 PM PDT

Thinking about an animal as basic as a mallard duck and how the male is considerably more eye catching with its bright green head, white neck ring and contrasting white and dark areas on the rest of the body. In contrast the female has a dull but prudent coloration that lends itself well to blending into reeds and other vegetation.

There's lots of other animals like this, Peafowl males notoriously have to lug around their cumbersome display feathers in addition to the bright coloration for example, while the female Sage-Grouse seem to be able to blend into the prairie much more comfortably than their partners.

Does this have real world repercussions for the survivability for either sex broadly speaking? Because I'd imagine that females have better luck when males almost seem to be advertising their presence to anything with eyes.

submitted by /u/Khwarezm
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When balding, why do you lose hair from the head and not from other areas?

Posted: 16 Jul 2021 11:51 AM PDT

Has an Extrasolar meteorite ever been discovered on Earth?

Posted: 16 Jul 2021 02:50 PM PDT

If so, would the age be determinable by radioisotope dating?

submitted by /u/Praseodyne
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Do Wet Bulb conditions (conditions where humans cannot physically cool down) ever occur in the tropics/sub-tropics?

Posted: 16 Jul 2021 01:11 PM PDT

I heard about such a thing happening in Canada of all places, so it got me wondering why I haven't heard about such a thing while struggling through the heat and high humidity down in South Carolina.

submitted by /u/Kronzypantz
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For Plants that can be sexed, are only the female plants able to produce fruit?

Posted: 16 Jul 2021 04:37 PM PDT

My wife told me about recent conspiracy theory that landscaping and agriculture businesses basically all male plants so when they pollinate they cannot produce fruit. Do only female plants produce fruit or are they just more productive when making fruit?…

submitted by /u/omgwtfidk89
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vào lúc No comments:

Saturday, July 17, 2021

Does reducing the swelling on a injury (like putting ice on a sprain) has any healing benefits or is just to reduce the "look" and "feel" of a swollen injury?

Does reducing the swelling on a injury (like putting ice on a sprain) has any healing benefits or is just to reduce the "look" and "feel" of a swollen injury?

Does reducing the swelling on a injury (like putting ice on a sprain) has any healing benefits or is just to reduce the "look" and "feel" of a swollen injury?

Posted: 16 Jul 2021 02:30 PM PDT

Just wanted to know if its one of those things that we do just to reduce the discomfort even though the body has a purpose for it...kind of like a fever.

submitted by /u/mrrobc97
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Would a thermonuclear bomb be more powerful if it used an heavier element?

Posted: 17 Jul 2021 03:30 AM PDT

So i recently read about the H-Bomb out of curiosity, and from what i understand the way it works is by fusing the hydrogen nucleus, having a small percentage of its mass turn into a ridiculous amount of energy which becomes the explosion. Supposedly the reason why hydrogen is used is due to it being easier to fuse, but hypothetically, if we were able to easily fuse heavier elements, would the resulting explosion be more powerful?

submitted by /u/whitekaj
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Do artificial flavors have any similarities other than tasting alike? Do similar tastes chemically "look" the same?

Posted: 16 Jul 2021 01:11 PM PDT

I forgot to add "similarities with the taste they are trying to synthesize"

submitted by /u/No_Variation_6639
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How is a random iridescent steel anodize accomplished with titanium oxide?

Posted: 16 Jul 2021 02:06 PM PDT

I understand that titanium oxide can be anodized onto steel via electrolysis. I also understand that the color of the anodize is determined by the voltage. But, I do not understand how multi-colored or iridescent finish is accomplished via this method. Here is an example.

​

How does one get a varied random iridescent finish via this method?

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https://www.puremetalcards.com/wp-content/uploads/2019/04/Pure-Metal-Cards-iridescent-metal-card-01.jpg

​

https://media.officedepot.com/image/upload/b_rgb:FFFFFF,c_pad,dpr_1.0,f_auto,h_666,q_auto,w_500/c_pad,h_666,w_500/v1/products/7282284/7282284_p_mind_reader_rainbow_pitcher?pgw=1

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https://image.rakuten.co.jp/digisto/cabinet/c50/1_z151sp_600.jpg

submitted by /u/healing_goose
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Will global warming cause different areas of he world to have varied rainfall levels?

Posted: 16 Jul 2021 10:39 AM PDT

For example, Would an area that historically have low annual rainfall see that trend start to shit towards more rain and other areas where it rains frequently to see levels drop?

submitted by /u/santman29
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What is the native range of houseflies?

Posted: 15 Jul 2021 07:59 PM PDT

I genuinely couldn't find it by just googling, I wonder if it's something that anyone even knows.

submitted by /u/thehuman2cs
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In places on the earth where the sun never rises at some times of the year, do plants that live there die as they cannot perform photosynthesis?

Posted: 15 Jul 2021 08:26 PM PDT

Can octopi survive with less than 3 hearts?

Posted: 15 Jul 2021 06:09 PM PDT

Just found out that octopi have three hearts: one for pumping blood to the body, and two for pumping blood to the gills. With these being so (seemingly) specialized, is it possible for an octopus to survive if one of the hearts becomes inoperable? If so, does it matter which one of the hearts it is (for example, can a 'gill' heart take over for the other but not for the 'body' heart)?

submitted by /u/__JDQ__
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Are there any living beings that can only be seen outside of our visible spectrum of light?

Posted: 15 Jul 2021 07:18 PM PDT

If no, is it possible for such creatures to exist?

submitted by /u/seeseasee
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Can meat get cancer? Could it still be eaten? Would the meat taste different?

Posted: 15 Jul 2021 05:17 PM PDT

I don't mean does meat cause cancer in humans I mean can say cow or pig meat get cancer and is that still edible with proper cooking

submitted by /u/ryannitar
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How do goldfish grow in proportion to their environment?

Posted: 15 Jul 2021 04:33 PM PDT

There have been multiple instances of very large goldfish caught in the wild in America. How do they grow so large in bigger bodies of water? My understanding is goldfish in tanks can die from over feeding, so access to resources is unlikely to be the cause for limited growth. Thanks!

submitted by /u/igotthetroublemaker
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How does the difference in temperature between seasons work?

Posted: 15 Jul 2021 05:09 PM PDT

How come in the winter it could be sunny and clear but only 10 degrees and in the summer it could also be sunny and clear but be 30 degrees?

submitted by /u/qdawg69420
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