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Author Topic: Science Thread (and !!SCIENCE!! Thread!)  (Read 79613 times)

Bumber

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #495 on: October 17, 2019, 05:30:48 am »

In french "le sexe" can mean gender as well as genital. So I'm assuming they meant it has 720 reproductive organs and Reuters translated that poorly.

I doubt that. The individual cells reproduce asexually, and it would be odd for a colony of any size to maintain exactly 720 reproductive organs.

There are probably 720 unique sexes that determine compatibility with a subset of the other sexes.
« Last Edit: October 17, 2019, 06:10:16 am by Bumber »
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Reading his name would trigger it. Thinking of him would trigger it. No other circumstances would trigger it- it was strictly related to the concept of Bill Clinton entering the conscious mind.

THE xTROLL FUR SOCKx RUSE WAS A........... DISTACTION        the carp HAVE the wagon

A wizard has turned you into a wagon. This was inevitable (Y/y)?

dragdeler

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #496 on: October 17, 2019, 06:17:05 am »

-
« Last Edit: November 23, 2020, 07:59:07 pm by dragdeler »
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Naturegirl1999

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #497 on: October 17, 2019, 06:29:46 am »

Slime molds are interesting
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feelotraveller

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #498 on: October 18, 2019, 02:15:06 am »

EDIT: it's also unclear what they mean by "720 sexes". This is a single-celled organism. How do they even define a sex for one of those?

I was just reading about this.  :)  The comment here: https://www.cnet.com/news/paris-zoo-unveils-mysterious-nightmare-slime-dubbed-the-blob/ is

Quote
And if you're hung up on the 720 sexes, well, that's just a fancy way to sell a story.

"They're not really sexes, they are mating types," says Latty. "Whether or not a slime mold can mate with another slime mold depends on its mating type which is determined by particular genes."

(Latty in above quote is "Tanya Latty, a slime mold researcher at the University of Sydney".)

Oh, the possibilities of pr0n in the slime mould world!
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Naturegirl1999

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #499 on: October 18, 2019, 07:27:22 am »

So could sexually reproducing animals and plants be considered to have 2 "mating types?" Or is mating type and sex different?
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wierd

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #500 on: October 18, 2019, 07:36:19 am »

More like what is present in some nematodes, where you have 3 "genders".  Male, Female, and Hermaphrodite.
https://www.sciencealert.com/a-worm-with-three-sexes-and-a-tolerance-for-arsenic-found-thriving-in-a-nearly-lifeless-lake

This gives several "viable" combinations,  Male + female, Female + Hermaphrodite, Male + Hermaphrodite, and Hermaphrodite + Hermaphrodite.

In the case of this slime mold, there are probably biochemically incompatible combinations, which is what gives rise to "mating types"-- For an example in larger species, see also "ring species"
https://en.wikipedia.org/wiki/Ring_species

While there are several types which are mutually exclusive, gene flow can still occur. Because the slime mold is a composite organism of several (potentially genetically distinct) single celled organisms acting in aggregate in complex ways, that gene flow within the assembly is important.
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Naturegirl1999

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #501 on: December 02, 2019, 01:20:52 am »

I found on Wikipedia and I can’t find what the L and T stand for in the Stellar Classification article that the image was found in. Did I just miss it?
« Last Edit: December 02, 2019, 01:37:29 am by Naturegirl1999 »
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Il Palazzo

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #502 on: December 02, 2019, 01:55:24 am »

Did I just miss it?
Yes. See 'extended spectral types'. Pt. 5.2.
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Naturegirl1999

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #503 on: December 02, 2019, 02:08:21 am »

Thank you
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wierd

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Egan_BW

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #505 on: December 07, 2019, 03:57:48 am »

Veggies just got tastier.
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Down at the bottom of the ocean. Beneath tons of brine which would crush you down. Not into broken and splintered flesh, but into thin soup. Into just more of the sea water. Where things live that aren't so different from you, but you will never live to touch them and they will never live to touch you.

wierd

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #506 on: December 12, 2019, 05:48:32 am »

So... Uhm...

Am I mistaken in thinking that this has some... Rather far-reaching implications?
https://phys.org/news/2019-12-energy-space-quantum-weirdness.html

Basically, Casimir effect radiation is capable of transporting thermal energy.


Shouldn't this have some pretty subtle but significant consequences?
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Iduno

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #507 on: December 12, 2019, 09:04:08 am »

So... Uhm...

Am I mistaken in thinking that this has some... Rather far-reaching implications?
https://phys.org/news/2019-12-energy-space-quantum-weirdness.html

Basically, Casimir effect radiation is capable of transporting thermal energy.


Shouldn't this have some pretty subtle but significant consequences?

We've known about radiant heating (the least effective form of heating, and also what we get from the sun) for a while, but maybe.
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Telgin

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #508 on: December 12, 2019, 09:40:10 am »

The article mentions helping with heat dissipation in ICs, but I'm actually not sure how that would work or improve over the current state of the art of just having a big heat sink conducting heat away.  There are probably some applications I'm not thinking of, but it seems to me at least right now this is just a curiosity that may lead to better understanding of quantum mechanics.
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wierd

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Re: Science Thread (and !!SCIENCE!! Thread!)
« Reply #509 on: December 12, 2019, 09:48:56 am »

So... Uhm...

Am I mistaken in thinking that this has some... Rather far-reaching implications?
https://phys.org/news/2019-12-energy-space-quantum-weirdness.html

Basically, Casimir effect radiation is capable of transporting thermal energy.


Shouldn't this have some pretty subtle but significant consequences?

We've known about radiant heating (the least effective form of heating, and also what we get from the sun) for a while, but maybe.



Radiant heating is the transfer of energy via blackbody radiation, which is a completely different mechanism to this one.
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