/sci/ - Science & Math

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Anonymous Thu 10 Mar 03:10:28 2022 No.14292212 View Reply Original Report

Quoted By:

Cell biology making its comeback

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Anonymous Tue 08 Mar 14:25:31 2022 No.14288558 View Reply Original Report

Quoted By: >>14292126 >>14292154

>Stars stop forming.
>Eventually all of them turn into black holes or burn out.
>Over an insane period of time everything will get swallowed by these black holes.
>And then they will start merging into even bigger black holes.
>Eventually all the black holes evaporate due to hawking radiation.
>With no matter left the entire universe becomes uniform and entropy ends.

Doesn't that imply that time basically stops at that point? If there's nothing left, just an infinite black void is there still time?

21 posts and 3 images omitted

Anonymous

Anonymous Wed 09 Mar 2022 23:06:22 No.14291846 Report

Quoted By:

>>14291817
Just floating around aimlessly in an empty Universe
Protons might eventually decay (not experimentally proven), which will leave immensely redshifted photons and neutrinos as the sole form of matter in the Universe

Anonymous

Anonymous Thu 10 Mar 2022 00:35:57 No.14292038 Report

Quoted By: >>14292154

>>14288588
the accent/pronouciation is driving me nuts. i cant watch it.

Anonymous

Anonymous Thu 10 Mar 2022 01:00:07 No.14292069 Report

Quoted By:

our sun will dim and crystallize, a diamond sun

Anonymous

Anonymous Thu 10 Mar 2022 01:42:37 No.14292126 Report

Quoted By:

>>14288558
No, the simulation just reboots with a fresh install of genTWO

Anonymous

Anonymous Thu 10 Mar 2022 02:13:03 No.14292154 Report

Quoted By:

>>14288558
>time basically stops at that point
if CCC is correct it starts all over

>>14292038
this but uniroically

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Anonymous Sat 05 Mar 21:50:09 2022 No.14282493 View Reply Last 50 Original Report

Quoted By: >>14292151

what is the wildest scientific theory that you think is correct?

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Anonymous

Anonymous Wed 09 Mar 2022 21:54:06 No.14291714 Report

Quoted By: >>14291724

>>14288281
>the building blocks of life self assemble easily and automatically
Multiple citations requested

bodhi

bodhi Wed 09 Mar 2022 21:59:50 No.14291719 Report

Quoted By:

>>14288281
they dont self assemble you fucking pseud, you cant throw a pile of chemicals that make crystal meth into a pot and get meth out. They have to be distilled and combined in a very specific fashion to get a desired result. Magnets attract each other (which is what chemicals do, the electrons attract) but that doesnt mean you can throw a pile of magnets down and they will assemble into a race car you fucking donkey

bodhi

bodhi Wed 09 Mar 2022 22:02:08 No.14291724 Report

Quoted By:

>>14291714
if you put every vitamin and mineral contained in the human body into a milk jug and let it sit for three days a fully formed human will grow out of it

Anonymous

Anonymous Wed 09 Mar 2022 22:46:16 No.14291805 Report

Quoted By:

I don't really have any wild theories I think are true, but there are some commonly accepted theories I think are false:
>anthropogenic climate change
>Big Bang cosmology (dark matter/energy, cosmic inflation)
>wave-particle duality

I guess I like some points of electric universe, and I think "space" and "luminiferous ether" are the same thing essentially.

Anonymous

Anonymous Thu 10 Mar 2022 02:09:41 No.14292151 Report

Quoted By:

>>14282493
Creationism

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Anonymous Wed 09 Mar 21:07:46 2022 No.14291585 View Reply Original Report

Quoted By: >>14291859

https://resistthemainstream.org/dr-peter-mccullough-findings-from-early-covid-19-vaccine-studies-potentially-alarming/

Anonymous

Anonymous Wed 09 Mar 2022 22:26:30 No.14291766 Report

Quoted By: >>14291990 >>14292002

Is this fearmongering?

Viruses don't exist

Viruses don't exist Wed 09 Mar 2022 23:12:26 No.14291859 Report

Quoted By:

>>14291585
there's no covid

Anonymous

Anonymous Thu 10 Mar 2022 00:10:44 No.14291990 Report

Quoted By:

>>14291766
>potentially alarming
>fear mongerong

Anonymous

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Anonymous Thu 10 Mar 2022 00:15:07 No.14292002 Report

Quoted By: >>14292101

>>14291766
No, it's opportunistic disclosure. Lots of information that was previously verboten will now be permitted because the world's attention is now elsewhere.

Anonymous

Anonymous Thu 10 Mar 2022 01:20:30 No.14292101 Report

Quoted By:

>>14292002
That makes zero sense.

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Positive Contribution

Anonymous Wed 09 Mar 23:40:16 2022 No.14291923 View Reply Original Report

Quoted By: >>14291955 >>14292072

Microbes generally make you weaker. Are there microbes that make you stronger?

2 posts omitted

Anonymous

Anonymous Wed 09 Mar 2022 23:51:58 No.14291955 Report

Quoted By:

>>14291923
Gut flora

Anonymous

Anonymous Thu 10 Mar 2022 00:55:18 No.14292060 Report

Quoted By: >>14292070

Inb4 that one fucker shows up
Do zooxanthellae for coral count? I suppose your gut flora is pretty helpful if it's doing what it's supposed to do, namely extracting more nutrients outta your meals.

Anonymous

Anonymous Thu 10 Mar 2022 01:00:10 No.14292070 Report

Quoted By:

>>14292060
Gut flora perform many services. Immune education, pathogen exclusion, regulation of stem cell turnover. The overwhelming majority of complex animals have associated microbial communities which serve some regulatory function for their hosts.

Viruses don't exist

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Viruses don't exist Thu 10 Mar 2022 01:01:08 No.14292072 Report

Quoted By: >>14292096

>>14291923
retard

Anonymous

Anonymous Thu 10 Mar 2022 01:17:44 No.14292096 Report

Quoted By:

>>14292072
Called itttt

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Anonymous Wed 09 Mar 15:19:06 2022 No.14290925 View Reply Original Report

Quoted By: >>14292088

The wreck of Earnest Shackleton's polar explorer "Endurance" found almost perfectly preserved:
https://www.nytimes.com/2022/03/09/climate/endurance-wreck-found-shackleton.html?smtyp=cur&smid=tw-nytimes

13 posts and 5 images omitted

Anonymous

Anonymous Wed 09 Mar 2022 15:41:37 No.14290980 Report

Quoted By:

>>14290974
>In addition to the expedition team, several ice researchers were on board, including Stefanie Arndt of the Alfred Wegener Institute in Germany. Dr. Arndt, who studies how Antarctic sea ice may change as the world warms because of human-caused emissions of greenhouse gases, and others spent much time out on the ice drilling cores. On Monday she said on Twitter that they had collected 630 samples from 17 locations, which she called “an incredible number.”

Anonymous

Anonymous Wed 09 Mar 2022 15:50:55 No.14290987 Report

Quoted By:

>>14290974
$10 million from an anonymous donor, huh?

Calling it - Shakleton sailed from Buenos Aires hauling the last sacred treasures of El Dorado to a secret masonic bunker in Antarctica. This expedition was launched to recover the artifacts.

Anonymous

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Anonymous Wed 09 Mar 2022 16:11:31 No.14291008 Report

Quoted By:

>>14290941

Anonymous

Anonymous Wed 09 Mar 2022 18:39:30 No.14291259 Report

Quoted By:

bump

Anonymous

Anonymous Thu 10 Mar 2022 01:14:27 No.14292088 Report

Quoted By:

>>14290925
Beautiful

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Anonymous Thu 10 Mar 00:08:02 2022 No.14291984 View Reply Original Report

Quoted By: >>14292013

Once we start space colonization which planet do you think in the solar system would be best for cultivating vineyards and making wine?

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Is there any research that suggests how to improve Implicit/Procedural Memory?

Anonymous Wed 09 Mar 06:48:55 2022 No.14290326 View Reply Original Report

Quoted By:

Is there even a silver bullet for this? Or is it a matter of improving individual skills? Or can improvement in one area that relies on procedural memory help others?
I have very vivid 'episodic memory' and can remember random facts and trivia easily. Remembering a speech, remembering dance steps, remembering what order to do things: not so much.

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Anonymous

Anonymous Wed 09 Mar 2022 08:15:47 No.14290427 Report

Quoted By: >>14290489 >>14290499

>>14290388
>No thank you, that's declarative memory, I'm asking about implicit and procedural memory.
Define the three briefly for me please

Anonymous

Anonymous Wed 09 Mar 2022 09:22:08 No.14290489 Report

Quoted By:

>>14290427
>Explicit/Declarative memory often referred to as declarative memory, can further be divided into episodic memory and semantic memory. Episodic memory refers to the ability to recollect everyday experiences. [...] Semantic memory is an individual's knowledge about the world and includes memory of the meanings of words (vocabulary), facts, and concepts and, contrary to episodic memory, is not context-dependent. Knowledge is remembered regardless of when and where it was learned, such as word definitions or knowing the years when WWII occurred.
>Implicit/Procedural memory refers to cognitive and sensorimotor habits and skills learned through repetition. The repetition of an activity leads to the progressive consolidation of the memory trace of the involved skills, leading to their automatization. It is involved in daily activities such as learning to tie shoes, ride a bike, or drive a car.
> Implicit memories have in common storage and retrieval mechanisms that do not involve the hippocampal system; perhaps for this reason, the subject has no conscious knowledge of them. These procedural memories involve “knowing how” rather than “knowing that.” Amnestic patients can learn new motor memories such as mirror drawing, which they can perform once started, although they have no recollection of knowing the task.
I'm more interested in things like dance steps or what order things should be done

Anonymous

Anonymous Wed 09 Mar 2022 09:26:16 No.14290499 Report

Quoted By:

>>14290427
Just to be clear Implicit and Procedural Memory are the same thing.
But they differ from Explicit Memory which is also called "Declarative Memory" that confusingly is divided into two types: Episodic which is the memory of personal experience, and Semantic, which are facts and words, dates.
Learning a text like the Torah is clearly a Explicit/Declarative Memory exercise as it involves words and isn't a sensorimotor exercise like driving a car or dancing

Anonymous

Anonymous Thu 10 Mar 2022 00:03:13 No.14291978 Report

Quoted By: >>14292035

>In 1971 John O’Keefe discovered ‘Place Cells’ in the hippocampus of rats which are always activated when it is in a certain place in the room, but other cells when in others. He showed these were not just registering visual input but building an inner map of the environment. When rats stop running Rats seem to reactive long sequences that reverse the sequence of place-cell activation. Dr. Brad Pfeiffer explains that when rats are actively exploring an environment the place cells further organized into mini-sequences that represent virtual sweeps of locations ahead, and these are activated roughly 8-10 times a second. To this in 2005 the Moser’s discovered ‘Grid Cells’ in the entorhinal cortex which allowed Rats to recognize the direct of the head and bored of a room. Mopser and Moser et. Al’s
>In an experiment by Pfeiffer’s colleague Bradley Lega where participants try to remember as many words as they can in 30 seconds, the firing of cells called ‘Time Cells’ in Hippocampus coincides with the recall of certain words. The firing of these cells predicted how well individuals were able to link words together during recall. (as studied through a technique called temporal clustering). This is linked with Episodic Memory though.

Anonymous

Anonymous Thu 10 Mar 2022 00:34:51 No.14292035 Report

Quoted By:

>>14291978
>Theta Rythym is a 5-8hz rhythm seen in rats while sleeping that follows the reactivation of place-cells in sequence. This projects into Layer II cells of the entorhinal cortex – and may be related to learning with regards to synaptic strength.
>The Theta Rhythm is a brain wave pattern of 5-8hz and notably seen in mice during sleep, perhaps related to place cells mentioned above: as rats in sleep seem to recall the same sequences on familiar paths except at a increased speed. “Theta Phase precession is a change in spike timing in which the animal crosses the spatially restricted firing field on the neuron.” And is apparent in nearly all entorhinal Layer II cells, but only some Layer III.
>Layer II and III project to the Dentate Gyrus of the Hippocampus, which is linked with neurogenesis in rats given anti-depressants; but inhibited neurogenesis in primates give cortisol.
>Layer II projects to the Hippocampus CA1 and the subilicum. Layer II when stimulated at 1 hz sees a reduction in synaptic strength (related to that seen in canniboids); but when stimulated at 100hz for 100milisecond intervals sees an increase.
In short if you mentally reverse the landmarks of a sequence it will improve your recall of the map, and this seems to happen naturally while dreaming

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Help me solve this problem mathbros

Anonymous Wed 09 Mar 21:55:18 2022 No.14291715 View Reply Original Report

Quoted By:

I heard that there's a lot of mathematicians and geniuses here so maybe you wouldn't mind helping a polish HS student with this problem? description is as follows:

You are given parabola with an equation of y = x^2 and points A = (0, 2) and B = (1,3), whose node C is lying on that parabola. Let "m" be first coordinate of C node.

a) Determine the area of a triangle ABC as a function of m variable.
b) Determine all m values for which triangle ABC is acute-angled.

13 posts omitted

Anonymous

Anonymous Thu 10 Mar 2022 00:13:27 No.14291996 Report

Quoted By:

>>14291986
Again, a simple substitution of m=1 shows your angle test fails. A right angled triangle is present.

Anonymous

Anonymous Thu 10 Mar 2022 00:14:33 No.14292000 Report

Quoted By: >>14292008

>>14291986
You've made the assumption that one angle being acute implies the whole triangle is acute, which is of course absurd

Anonymous

Anonymous Thu 10 Mar 2022 00:22:22 No.14292008 Report

Quoted By: >>14292027

>>14292000
What? All I did was assume angle ABC is acute, lol.

Anonymous

Anonymous Thu 10 Mar 2022 00:29:34 No.14292027 Report

Quoted By: >>14292034

>>14292008
If you read the question, it asks for ABC to be acute, which is not the case under your criterion.

An acute triangle is a triangle for which ALL of its angles are acute. Unless you're referring to a non-euclidean geometry, any given triangle will have atleast two acute angles.

Anonymous

Anonymous Thu 10 Mar 2022 00:34:08 No.14292034 Report

Quoted By:

>>14292027
I read the question, I just didn't remember that faggy high school term, and assumed that it just meant angle B was acute. I have a PhD in math and never once had to care about that stupid term.

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Is it time to take the woodpill?

Anonymous Wed 09 Mar 13:13:36 2022 No.14290735 View Reply Original Report

Quoted By: >>14292031

Fuel prices are skyrocketing around the world, and realistically there will be a point where it may just be unavailable
is it time to revive the WW2 methods, by making new wood gas generators to power ICE cars and run old cars on wood?

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Anonymous

Anonymous Wed 09 Mar 2022 23:57:26 No.14291970 Report

Quoted By: >>14291981

>>14291969
wood is nothing like a battery
this is a truly epic armchair-power-engineer moment

Anonymous

Anonymous Thu 10 Mar 2022 00:05:41 No.14291981 Report

Quoted By:

>>14291970
It's chemical energy stored in hydrocarbons which are continuously recycled. It is exactly a battery. Where do you think trees get their energy from? The ground?

Anonymous

Anonymous Thu 10 Mar 2022 00:29:24 No.14292024 Report

Quoted By: >>14292029

>>14290742
>>14290777
>>14291964
I just did an order of magnitude estimate for you. You need somewhere around 31,000 tree-years of wood for your car, which means you need to maintain a forest of 31,000 trees and plant 6,200 trees each year if you harvest every 5 years or 1,550 trees each year if you harvest every 20.

If you'd like to check my math I used (([volume of gasoline]*[density of gasoline]*[energy density of gasoline])/[energy density of wood])/[tree growth rate kg/year] for my estimate.

Anonymous

Anonymous Thu 10 Mar 2022 00:31:13 No.14292029 Report

Quoted By:

>>14292024
I forgot to specify that the volume of gasoline is the annual consumption of one person and that I used the total population rather than the driving population so it's an underestimate.

Anonymous

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Anonymous Thu 10 Mar 2022 00:32:45 No.14292031 Report

Quoted By:

>>14290735
>take the wood pill
>while there is a global timber shortage
Sure okay OP.

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Is there any research that suggests how to improve Implicit/Procedural Memory?

Help me solve this problem mathbros

Is it time to take the woodpill?