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Friday, August 3, 2018

Is mold in blue cheeses different in any way from the mold we usually despise that makes it desireable in food?

Is mold in blue cheeses different in any way from the mold we usually despise that makes it desireable in food?


Is mold in blue cheeses different in any way from the mold we usually despise that makes it desireable in food?

Posted: 02 Aug 2018 10:27 PM PDT

Have scientists ever actually brought back a once extinct species?

Posted: 03 Aug 2018 08:16 AM PDT

The ongoing flame in London was followed to an electrical blame in an ice chest cooler. How might you follow with such exactness what was the single machine that caused it?

Posted: 03 Aug 2018 06:24 AM PDT

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submitted by /u/AkashNeill
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What is the simplest, most primitive organism that still has the need to sleep?

Posted: 03 Aug 2018 12:10 AM PDT

So I suppose bacteria and similar things do not sleep ever. And every animal out there sleeps, including tiny insects, right? So at what point of organism development the need to sleep appears?

submitted by /u/Ilitarist
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By what mechanism does borax kill ants?

Posted: 02 Aug 2018 03:10 PM PDT

Can strong fibers be made from nonbasaltic minerals?

Posted: 03 Aug 2018 06:37 AM PDT

This has been question eating at me for a long, but I can't find any research on this (going ether way).

I know we can make basalt fibers with pretty good tensile and elasticity properties. They can be woven into strong 'fabrics' or used as reinforcement for rigid structural materials, but what about other rock/mineral types? What about other feldspars, micas, zeolites, etc? Are other minerals not found in basalt similarly useful as fibers or is everything else only good for structurally useless rockwool?

I assume not all minerals are equal, but it seems strange to me that only what's found in basalts would make strong fibers.

submitted by /u/Helt-Texas
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Why is it so difficult to find out the root cause of some diseases?

Posted: 03 Aug 2018 01:19 AM PDT

I was diagnosed with Multiple Sclerosis about five years ago, and despite all the research and money going in to treat the illness, very little is still known about it. It's hypothesised that viral, environmental, or genetic factors may play a role, but still nobody knows the trigger of why our bodies suddenly start attacking itself; in my case, the myelin sheathing that protects the nerves.

Thanks in advance for taking the time to read and maybe give some insight on this enigma. Cheers!

submitted by /u/Dikkle
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How was the Charles Kuonen Suspension Bridge installed?

Posted: 03 Aug 2018 05:22 AM PDT

Title pretty much says it all. It's the longest suspension bridge in the world and basically hangs between two mountains with very little access to lifting vehicles. My guess is that the cables were lifted in place using helicopters and then the path was laid down piece by piece, but I'd appreciate a more enlightened opinion. Thanks!

submitted by /u/Stalennin
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Who actually uses the Candela SI unit?

Posted: 03 Aug 2018 05:05 AM PDT

An internet search certainly throws up many definitions of the unit, but I am interested in specific applications: an example of a technical manual, published papers etc that use this unit.

submitted by /u/IceGuerilla
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Why does a spinning ball change direction and start spinning the opposite way after making contact with the ground?

Posted: 03 Aug 2018 07:55 AM PDT

How do phone detonators work?

Posted: 03 Aug 2018 07:40 AM PDT

How can you link a phone to an object without a sim card or an assigned number?

submitted by /u/HTS1231
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Can we predict solar storms?

Posted: 03 Aug 2018 05:33 AM PDT

What (if any) progress is being made on exploring if electrons and quarks have component parts or are truly elementary particles?

Posted: 02 Aug 2018 05:00 PM PDT

Are there any projects/experiments ongoing - or proposed - that are attempting to split an electron or quark? Or in some other way test whether these particles can be broken down or subdivided into smaller, theoretical unknown particles?

submitted by /u/SemiTrainedApe
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How do nerves get attached to a new organ in an organ transplant?

Posted: 02 Aug 2018 08:53 PM PDT

What's the difference between medicine that needs to be taken before meals and those that need to be taken after meals?

Posted: 02 Aug 2018 10:03 PM PDT

Why do we occasionally bite our lips/cheeks while eating?

Posted: 02 Aug 2018 11:49 PM PDT

After eating for 20+ years, why does my brain forget how to eat properly resulting in a bleeding lip?

submitted by /u/lovebitebirthmark
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What factors contribute to difficulty when drawing blood from someone?

Posted: 02 Aug 2018 11:32 PM PDT

I've been told by different lab technicians that I have small veins, that I'm dehydrated (I'm not,) that my veins go "flat" and that I have scar tissue from having blood drawn multiple times in July.

submitted by /u/Staticfair
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Is there any substantial environmental damage from acquiring the materials necessary to make solar panels, wind turbines, or hydroelectric dams?

Posted: 02 Aug 2018 12:47 PM PDT

What happens to a lost ant when it's dropped off to another ant colony?

Posted: 02 Aug 2018 08:02 PM PDT

I noticed an ant in my room earlier and decided to carefully drop it off (a bit far away) outside, next to a bunch of other ants. Will the other ants reject the lone ant? If so, do they kill it or just drive it away?

submitted by /u/Sosadu2
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Why do animals/mammals have different life spans?

Posted: 03 Aug 2018 01:21 AM PDT

Can we use desert's sand for construction and manufacturing?

Posted: 03 Aug 2018 12:41 AM PDT

I have a fan in my room that has blades that glow in the dark. When I turn the light off in my room it will take a few minutes before I even notice the glow from the blades. Why is that?

Posted: 03 Aug 2018 12:13 AM PDT

Thursday, August 2, 2018

What is the bottom of the Sahara desert like? Like underneath the sand, what condition is the bedrock in?

What is the bottom of the Sahara desert like? Like underneath the sand, what condition is the bedrock in?


What is the bottom of the Sahara desert like? Like underneath the sand, what condition is the bedrock in?

Posted: 02 Aug 2018 03:18 AM PDT

Rubbed smooth or jagged rock formations? What do we know about it?

submitted by /u/LBLLuke
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I encrypt a message with keyA, then with keyB. Is there now a keyC that could decrypt the message in one go, instead of using keyB and keyA?

Posted: 02 Aug 2018 06:14 AM PDT

Galaxies are hundreds of thousands of lightyears in diameter, and gravity only travels with the speed of light. Does this not distort the shape of them?

Posted: 02 Aug 2018 03:03 AM PDT

Or is this the reason for that galaxies have "arms"?

submitted by /u/7373737373
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Why do humans often mess up on simple counting?

Posted: 02 Aug 2018 01:53 AM PDT

It seems odd that in many stressful and non-stressful environments humans often lose count of something so basic; say they're counting coins they may have to start over again a couple of times because they keep losing count. It's mainly weird to me, because it's so simple.

submitted by /u/jmzofficial
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What is the effect of radiation on lead?

Posted: 02 Aug 2018 05:03 AM PDT

I heard about radithor today, basically a drink from the 20's that was meant to heal all your ills. It contained radium 226 and radium 228.

A person died from ingesting too much. They were buried in a lead lined coffin. Exhumed in the 50s, he was still radioactive and presumably replaced in the lead lined coffin.

My question is, what will happen to the inside of the coffin and specifically to the lead. Will the particles be dissipated into the lead as heat. Will the lead disappear slowly to nothing?

submitted by /u/wanderingrhino
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How does zooming in on an image work?

Posted: 02 Aug 2018 04:29 AM PDT

If on a 1920x1080 screen you look at a 1080p image on full screen, one pixel of the image would theoretically use 1 pixel on the display. But if I then zoom in that ratio would be ruined unless it's 4x magnification when 1 image pixel takes up a 2x2 square of LEDs on the screen.

How would any magnification in-between 1x and 4x be displayed? Or have I got the wrong idea on how it works?

submitted by /u/TheTruFinster
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Why does putting scalding water on a rash feel good?

Posted: 02 Aug 2018 08:16 AM PDT

I've found that cranking up the temp in a shower to the point my healthy skin feels pain but something like a poison ivy rash under the same water is euphoric, what is going on?

submitted by /u/PHealthy
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Can LEDs emit other types of EM radiation?

Posted: 02 Aug 2018 02:58 AM PDT

Do fish catch colds or any other water born flu like virus?

Posted: 02 Aug 2018 05:23 AM PDT

If light is an electromagnetic wave, is electromagnetic induction in a metal coil possible with a light wave? What makes it different from magnetic induction caused by an electromagnet?

Posted: 02 Aug 2018 06:48 AM PDT

Alternatively, is it possible for a changing magnetic field from an electromagnet to produce visible light as radiation instead of invisible magnetic field line? Does this have something to do with frequency?

submitted by /u/eldarandia
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How much damage have nuclear bombs done to the atmosphere?

Posted: 01 Aug 2018 07:45 PM PDT

Do Platypuses or any other monotremes experience flatulence?

Posted: 02 Aug 2018 07:08 AM PDT

Do Platypuses or Ecidnas fart?

submitted by /u/changetime
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How do the glass in glasses help people see?

Posted: 02 Aug 2018 06:56 AM PDT

What makes a cancer spread to a specific place in the body?

Posted: 01 Aug 2018 05:43 PM PDT

For example, I've heard small-cell lung cancer likes to metastasize to the brain first. But why to the brain? Wouldn't it have the same probability of spreading to any of your organs/bones?

Is there a biological basis to this, or is it more based off statistics of people who suffer from small-cell lung cancer?

submitted by /u/Sedated_Sloth
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When people "die from overwork", what do their bodies actually shut down from?

Posted: 02 Aug 2018 02:27 AM PDT

What is actually happening when our head is ‘spinning’ when we’re too drunk?

Posted: 01 Aug 2018 06:46 PM PDT

In Thermal Expansion, how does the material know which direction it would be expanded?

Posted: 01 Aug 2018 10:56 PM PDT

For example, a metal sheet with a hole. Instead of the material expands through the space provided by the hole, it expands away from the whole surface of the material, which makes the hole larger.

submitted by /u/lovingafricanchild
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How does a bee aerodynamically fly?

Posted: 02 Aug 2018 02:23 AM PDT

Do other animals in nature get addicted to things? Do they experience withdrawals?

Posted: 01 Aug 2018 06:11 PM PDT

Does a magnetic field induce current in a different way depending on the charge of the particles?

Posted: 01 Aug 2018 12:15 PM PDT

I've been learning about fusion reactors and magnetic confinement, and read that magnetic coils can be used to induce a current in ("neutrally-charged") plasma, and I wondered why that was.

 

In physics, you learn that a magnetic field will induce an electric current in a wire. However, we've almost been "tricked" into thinking that this only applies to negatively-charged electrons.

 

Do magnetic fields affect positively-charged particles in the same way as they do electrons in a wire? Do they move in the opposite direction? How about with neutral particles? Does the charge not actually matter and current is just a fancy way to say "something's moving"?

submitted by /u/mrpokehontas
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Are there any uses for polygons with large numbers of sides?

Posted: 01 Aug 2018 06:00 PM PDT

I was discussing this with my SO today. Are there any uses for things like a Myriagon with 10,000 sides? I understand the practical uses of common polygons but why would you ever use something with a million sides?

submitted by /u/Cheph_Skeetskeet
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If cancer runs in your family, are you at risk for cancer in general or are you just at risk for the specific type that runs in your family?

Posted: 01 Aug 2018 01:41 PM PDT

If so, does anyone know the odds?

submitted by /u/Boba3964
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Wednesday, August 1, 2018

What is the purpose of utilizing screws with a Phillips' head, flathead, Allen, hex, and so on rather than simply having one widespread screw compose?

What is the purpose of utilizing screws with a Phillips' head, flathead, Allen, hex, and so on rather than simply having one widespread screw compose?


What is the purpose of utilizing screws with a Phillips' head, flathead, Allen, hex, and so on rather than simply having one widespread screw compose?

Posted: 01 Aug 2018 04:37 AM PDT

How do lava lamps work?

Posted: 31 Jul 2018 01:01 PM PDT

When you destroy a bee or wasp nest, where do the survivors go for the night?

Posted: 31 Jul 2018 07:06 PM PDT

Can plants/trees die of smoke inhalation?

Posted: 31 Jul 2018 10:24 AM PDT

I was flying over the CA/OR wildfires yesterday and had a thought. I know plants (in general) 'breath' through stomata in green leaves. If they are in a very dense smoke environment, would their respiratory systems become blocked like a human's would in a smokey environment? If so, how dense would that smoke need to be? How long would the exposure need to happen over?

submitted by /u/patatbeerho
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The Apollo missions resulted in us leaving optical reflectors on the moon's surface. Do we need to 'lead' the moon when measuring distances via laser using the reflectors?

Posted: 31 Jul 2018 01:10 PM PDT

See Smarter Every Day's snippet on the subject.

They talk about having very high precision retro-reflectors at 3 locations on the moon's surface. They also mentioned that it was roughly 1.28 light seconds to the moon. Does that mean that when we send a laser burst to test distance, that we need to actively 'lead the target' reflector? Since lasers aren't perfect, are they simply 'wide' enough at that distance that it is a non-issue?

submitted by /u/Schwerlin
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How do CDs encode stereo sound and how does it affect the bit depth of the sample? Also, how do CDs and/or Blu-Ray discs account for thermal expansion?

Posted: 01 Aug 2018 06:14 AM PDT

I have surprisingly been unable to find exactly how a CD records and plays back stereo sound. I know that in CDs sound is encoded as a sample taken 44100 times per second with 16-bits of precision, but for almost all media there are two tracks, not one. One for the left channel and one for the right channel. But how does the system know if the sound is meant for the right or left channel? Given that in analog mediums these are generally two tracks read simultaneously, and that a CD is a single line of bits, how is it able to send sound to both channels simultaneously? Does it alternate reading right and left channel samples every other sample? does it encode the channel within the sample itself? if so how does that affect the bit depth and sound quality?

My second question which I have also been unable to find an answer for is how CDs or Blu-Ray discs deal with thermal expansion. I'm not sure if this is an issue for CDs as they use larger pits for a larger wavelength laser, but given the tiny size of the pits on a Blu-Ray disc I'd imagine that being heated up by the laser would cause the disc to expand to the point that the playback laser is no longer tracking the correct path. How is this accounted for and dealt with?

Thank you

submitted by /u/flobbley
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Do different kinds of languages have different sounding gibberish's?

Posted: 31 Jul 2018 10:35 AM PDT

Gibberish can sound like a lot of things, but to keep this question relavent, I'd define gibberish as nonsensical talk that sounds like it could be a language, or using a consistent phonology perhaps?

Does the language you speak influence the gibberish you make up? Could the kind of gibberish you make up clue what language you natively speak? I am a native english speaker and I can't roll my r's so even when I speak gibberish there are sounds I can't make and that can clue my non spanishness. Do different languages have different general sounding gibberish's?

submitted by /u/Hidnut
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How does a deadly allergy work?

Posted: 01 Aug 2018 06:37 AM PDT

For example, I have a friend who is literally deathly allergic to tomatoes. What does his body lack/have?

submitted by /u/chinchris13
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Can people die from a highly oxygenated environment?

Posted: 31 Jul 2018 10:16 PM PDT

Why do bombs have to be handled so gently? What mechanism makes them go off if handled roughly?

Posted: 31 Jul 2018 08:07 PM PDT

Why does eczema show up in different places on different people?

Posted: 31 Jul 2018 08:41 PM PDT

So I've had mild-moderate eczema all of my life which affects the insides of my elbows and knees, and the front of my neck. I know a lot of people get it on their hands, and some unlucky people can get it on their eyelids. What is it that determines where you're affected by eczema?

submitted by /u/1113975722
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Can antennas transmit electromagnetic radiation in the visible spectrum?

Posted: 31 Jul 2018 11:11 PM PDT

As far as I know, dipole and parabolic antennas can transmit in the EM spectrum on either side of the visible spectrum. Why then, have I not seen an antenna transmit in visual light? I'm not talking about filament bulbs that heat an element, it is visually similar but that is fundamentally different from what I am asking (I think). I would expect, if we modulated the signal similar to how we do VHF or microwaves, I would be able to see an antenna appear green, and just by changing the frequency, alter the color.

submitted by /u/comshield
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How do internet service providers harness the internet and distribute access to it via cables? What do the cables in our homes connect to on the other side?

Posted: 31 Jul 2018 03:16 PM PDT

What gives our eyes their color?

Posted: 01 Aug 2018 01:21 AM PDT

Some thunder is deep and rumbling, and some sounds hollow and piercing. What causes the variation in how thunder sounds?

Posted: 31 Jul 2018 06:37 PM PDT

How can scientists determine that Homo Denisovan is a separate species when The biggest fossil is a finger bone?

Posted: 31 Jul 2018 06:18 PM PDT

It doesn't make sense to claim so much about this specifies with so little evidence.

submitted by /u/throwawaythetrash95
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Why are there so many wildfires in California?

Posted: 31 Jul 2018 06:37 PM PDT

Do any other animals "combine" foods like humans do?

Posted: 31 Jul 2018 01:20 PM PDT

Is there an animal equivalent to say, chocolate covered strawberries (or crackers and cheese, carrots and hummus, pasta and meat, etc)? It's a food/flavor combination that a lot of humans enjoy (although not all), even though both can be eaten separately. Do any other animals or have any other animals been observed to have certain food combination preferences within their diets in the wild or in captivity? If so, which species and which foods do they like? If not, why not?

submitted by /u/avocadoenthusiast43
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Are there any algebraic structures defined by ternary operations?

Posted: 31 Jul 2018 03:32 PM PDT

There are lots os interesting structures defined by a set and one or more binary operations, like Monoids, Groups and Rings.

Can you define any unique and/or interesting algebraic structures using ternary operations?

submitted by /u/kauefr
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For LASERs, does it matter which orientation you apply the electrical potential across the piece of semiconductor material?

Posted: 31 Jul 2018 01:27 PM PDT

  • If we have a cube of semiconductor material, does it matter if I apply the electric potential across the X-X plane/face, or the Y-Y plane/face, or the Z-Z plane/face? (i.e. Do typical direct bandgap semiconductor material require a specific orientation in which you need to apply the electric potential?)

  • If I apply the electric potential across the X-X plane/face, will the light be emitted in all directions? (Assuming all faces of the cube have equal transmission of light.)

  • Also, is it feasible to apply electric potential across the X-Y plane/face, or the Y-Z plane/face, to produce light? (Assuming the electrodes are not shorted along the edges of the cube.)

submitted by /u/spacejockey8
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How does the smoke, heat and debris from wildfires affect cloud and weather systems?

Posted: 31 Jul 2018 12:53 PM PDT

What role do neoplastic cells play in vaccines?

Posted: 31 Jul 2018 10:15 PM PDT