Why do some things, like pansies, some aluminum panels, cars, etc, allow water to condense on their surfaces overnight and other surfaces do not? | AskScience Blog

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Saturday, October 22, 2016

Why do some things, like pansies, some aluminum panels, cars, etc, allow water to condense on their surfaces overnight and other surfaces do not?

Why do some things, like pansies, some aluminum panels, cars, etc, allow water to condense on their surfaces overnight and other surfaces do not?


Why do some things, like pansies, some aluminum panels, cars, etc, allow water to condense on their surfaces overnight and other surfaces do not?

Posted: 21 Oct 2016 09:18 PM PDT

What period of time had the most biodiversity on Earth?

Posted: 21 Oct 2016 08:58 PM PDT

Why are the planets logarithmically spaced?

Posted: 21 Oct 2016 01:59 PM PDT

I was fooling around with putting together a scale model of the solar system.

I noticed that the planets followed a very familiar curve.

I plotted the planetary distances on a log scale just to be sure. Yup! That's a really good fit!

What caused that spacing? Is it just a coincidence?

submitted by /u/Brass_Orchid
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Why is it that the east coast of the United States is lined with barrier island while they are sparsely seen on the west coast?

Posted: 21 Oct 2016 02:10 PM PDT

Evolutionarily, how is the rise of a new species not a genetic bottleneck?

Posted: 21 Oct 2016 07:30 PM PDT

Please correct any misunderstandings on my part. A genetic bottleneck is bad, right? It leads to defects and a lack of genetic diversity? So how are new species able to come about when the first individuals to have a certain mutation, pass it on, and lead to a split would be a small subset of the original population and therefore not genetically diverse?

submitted by /u/mrembo
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Does the gravitational constant change?

Posted: 21 Oct 2016 02:54 PM PDT

Does the gravitational constant equal to 9.81 m/s² even apply if your outside of earths SOI? for example solar orbit or other planets

submitted by /u/Vulkaistos
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When a modern A.I., such as IBM's Watson, "reads a book", or any other text, what is that program doing with/to that text?

Posted: 21 Oct 2016 08:59 AM PDT

A few weeks ago a 60 minutes piece on AI suggested that Watson read thousands of books in an incredibly short period of time. What exactly does that mean? In my mind it could be that the system is just placing it in a database? It could also mean that its running it through a filtering algorithm and assigning subject matter titles to it or plucking out supposedly important sentences? How does it process the words, sentences, and paragraph's of the work and then how it uses them later on?

submitted by /u/awkpeng
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If a bone marrow transplant alters DNA, would a crime investigation point to two people?

Posted: 21 Oct 2016 11:11 AM PDT

Lets say I get a random person's bone marrow transplant, and the DNA in my blood is altered. Is it now an exact match with the donors? And if so, is it feasible that something like this could interfere with a crime scene? Was thinking this would be a good movie/book plot, but didn't know how legitimate it would be.

submitted by /u/JAForsyth21
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Why is calculating an integral so much more difficult than calculating a derivative?

Posted: 21 Oct 2016 08:52 AM PDT

As far as I can tell, derivatives and integrals are inverse functions. So why is one so much more difficult to calculate than the other?

submitted by /u/ohdaviing
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If two objects travel away from each other at slightly more than half the speed of light, does that mean they're both travelling faster than light relative to each other?

Posted: 21 Oct 2016 12:10 PM PDT

Also, I'm sorry if this isn't the most up to date or correct science, but changing speeds affect time, right? If one of the objects slowed down before the other, or if they both came to an instant stop, how much time would each have experienced relative to an object at the start point travelling at no speed (relative to both of them) or relative to each other?

sorry if this is overly hypothetical, but it could happen in the future when we have the tech. I'll go to the other sub if you want lol

submitted by /u/samzeman
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Is this research real progress on developing large-scale carbon capture mechanisms?

Posted: 21 Oct 2016 10:40 AM PDT

On the one hand, this would be great. On the other ChemistrySelect doesn't seem like a very legit journal and the technology seems difficult to scale up.

http://www.popularmechanics.com/science/green-tech/a23417/convert-co2-into-ethanol/

submitted by /u/veryedible
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Melting point of carbon > tungsten?

Posted: 21 Oct 2016 09:11 AM PDT

So I've always believed that tungsten has had the highest melting point of all the elements, but just today in chemistry class I learned that CARBON was just above tungsten. Yet when I look up, "highest melting point element" I end up with tungsten. What's going on here? On paper carbon does seem to have a higher melting point, but tungsten is still written in as being higher.

submitted by /u/adeptcroc
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What's the significance of a eutectic/peritectic/eutectoid point and composition?

Posted: 21 Oct 2016 11:19 AM PDT

It sounds an awful lot like an academic pursuit vs having any practical application. After all, a eutectic point is where liquid turns directly into two solid phases. I can't see any use in that because it's only the lowest melting point which seems like something one would want to avoid.

submitted by /u/tylerchu
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Can dominant traits disappear?

Posted: 21 Oct 2016 06:49 AM PDT

Hello, I have a question regarding dominant traits and genes, as I can understand, a dominant allene, if passed down, will always express the correlated trait in the offspring, even if there is a recessive allene passed down as well, as the Punnett square says.

Let's suppose that we have several individuals with only the recessive allene that little by little take over the rest of the population never breeding with the ones having the dominant trait, so that only the recessive allene is passed down in the end, will the dominant trait eventually disappear completely? Even if there is the case of only the recessive allene present in the population, is it still correct to call it a recessive trait?

Am I missing something?

submitted by /u/ISpokeAsAChild
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I know that if you repeat a set of moves on a rubik's cube it will eventually return to it's original state. How would this work if one or more side was infinitely long?

Posted: 21 Oct 2016 01:58 AM PDT

Could you have infinately long sequences that still return and if so would all sequences still "loop" even though you have to repeat an infinitely long sequence infinitely many times?

submitted by /u/stromgr1
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