/sci/ - Science & Math

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Anonymous Mon 14 Mar 02:17:24 2022 No.14301658 View Reply Original Report

Quoted By:

I don't usually trust perpetual motion machine but this one looks legit, what do you think?

31 posts and 9 images omitted

Anonymqus

Anonymqus Mon 14 Mar 2022 23:30:17 No.14304179 Report

Quoted By: >>14304193

>>14301964
dude you haven't seen this?
https://www.youtube.com/watch?v=Z8yW5cyXXRc

Anonymous

Anonymous Mon 14 Mar 2022 23:33:53 No.14304193 Report

Quoted By:

>>14304179
https://www.youtube.com/watch?v=O9XtK6R1QAk

Anonymous

Anonymous Tue 15 Mar 2022 03:44:01 No.14304646 Report

Quoted By:

>>14302585
>needs to consume magnet to generate power
>infinite energy

Anonymous

Anonymous Tue 15 Mar 2022 04:09:32 No.14304695 Report

Quoted By:

>>14302556
>I showed a toy to a professor and he was stumped
this is ridiculous
it isn't the job of professors to debunk strangers with too much time
people are assholes
they largely hate school
they think professors are voodoo dolls

Anonymous

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Anonymous Tue 15 Mar 2022 04:11:28 No.14304697 Report

Quoted By:

>>14302567
your one is obviously troll physics, try the one might actually work like pic related

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Anonymous Tue 15 Mar 03:52:57 2022 No.14304666 View Reply Original Report

Quoted By: >>14304683

pls halp
how many hours will a 12v 10ah lead acid battery at full charge keep a light bulb turned on at 12V @ 7W/hr power consumption?
I am brainlet pls sirs I will honor your penis
I'm doing this for my backyard lighting, not for school
pic is electric tits, OP can surely deliver

2 posts and 1 image omitted

Anonymous

Anonymous Tue 15 Mar 2022 03:59:24 No.14304680 Report

Quoted By:

booba

Anonymous

Anonymous Tue 15 Mar 2022 04:00:23 No.14304682 Report

Quoted By: >>14304691

there's no great answer, lightbulbs can operate at many different currents
using typical values for lightbulbs (drawing ~0.4 A) your battery will last about 27 hours

Anonymous

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Anonymous Tue 15 Mar 2022 04:00:24 No.14304683 Report

Quoted By:

>>14304666
>7 watts/hour
what the actual fuck?

Anonymous

Anonymous Tue 15 Mar 2022 04:04:18 No.14304691 Report

Quoted By:

>>14304682
I think it says 1A
but when I put in 12V and 7W in this calculator it says 0.583 A
wut?

the light bulb is named "7W RV LED 12v DC Light Bulb Camper Trailer Marine E26" in most online stores

Anonymous

Anonymous Tue 15 Mar 2022 04:07:11 No.14304694 Report

Quoted By:

in theory there's no difference between practice and theory, but in practice there is

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Americium-241 from a smoke detector

Anonymous Mon 14 Mar 20:05:04 2022 No.14303662 View Reply Original Report

Quoted By: >>14304596 >>14304602 >>14304689

Can I make a nuclear reactor with this? If so, how?

10 posts and 1 image omitted

Anonymous

Anonymous Tue 15 Mar 2022 03:12:46 No.14304596 Report

Quoted By: >>14304672

>>14303662
Yeah, about half a dozen detectors should do the trick

Anonymous

Anonymous Tue 15 Mar 2022 03:15:26 No.14304602 Report

Quoted By:

>>14303662
With any household/home lab instruments - you will literally screw yourself up. Don't do it.

Anonymous

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Anonymous Tue 15 Mar 2022 03:48:16 No.14304656 Report

Quoted By:

>>14304515
Well I'll be darned. I thought it's fission cross section was too small and the only useful Am isotope was 242m. I was wrong.

Anonymous

Anonymous Tue 15 Mar 2022 03:54:59 No.14304672 Report

Quoted By:

>>14304596
More like truckloads.

Anonymous

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Anonymous Tue 15 Mar 2022 04:03:34 No.14304689 Report

Quoted By:

>>14303662
do everyone a favor and leave that shit alone. i don't want to breath americium dust because some moron crushed it up next door.

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Anonymous Tue 15 Mar 00:14:28 2022 No.14304283 View Reply Original Report

Quoted By: >>14304629 >>14304642 >>14304644 >>14304658

Theoretically if you could fine tune the probabilistic way of things (spacetime) you could make anything happen

9 posts and 1 image omitted

Anonymous

Anonymous Tue 15 Mar 2022 03:26:29 No.14304629 Report

Quoted By:

>>14304283
Way above anyone's pay grade. In theory, things have space and time because they have mass. You would either have to go really fast or really massive, and we can't even comprehend what other things would have to be done to "warp" into or out of these universes.

Anonymous

Anonymous Tue 15 Mar 2022 03:28:53 No.14304630 Report

Quoted By:

>fine tune
theorists do this all the time
heyoo

Anonymous

Anonymous Tue 15 Mar 2022 03:39:11 No.14304642 Report

Quoted By:

>>14304283
Theoretically, if you couldn't fine tune the probabilistic way of things, you could still make anything happen.
Realistically, we can't make very important things happen which are far beyond the realm where probability influences the outcome, such as infections, cancers, organ scarring, and neurological damage.

Anonymous

Anonymous Tue 15 Mar 2022 03:43:31 No.14304644 Report

Quoted By:

>>14304283
theoretically if you've already done anything then you wouldn't need to do anything

Anonymous

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Anonymous Tue 15 Mar 2022 03:48:38 No.14304658 Report

Quoted By:

>>14304283
the real kicker is when you realise what free will does to spacetime

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Anonymous Mon 14 Mar 23:02:32 2022 No.14304103 View Reply Original Report

Quoted By:

Let's say you take one cubic centimeter of air from the room you're sitting right now, for example.

Which element would it contain the least, but would still contain it?

8 posts omitted

Anonymous

Anonymous Tue 15 Mar 2022 00:50:28 No.14304347 Report

Quoted By:

>>14304281
Yeah, the thing is that even if the relative amount of some gas or element is one part per 10^20 which is crazily small, that cubic centimeter would still contain it.

Anonymous

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Anonymous Tue 15 Mar 2022 02:04:48 No.14304481 Report

Quoted By: >>14304657

>>14304217

Anonymous

Anonymous Tue 15 Mar 2022 02:07:59 No.14304487 Report

Quoted By:

>>14304217
I bet you write google as a source.

Anonymous

Anonymous Tue 15 Mar 2022 02:32:01 No.14304539 Report

Quoted By:

>>14304187
It would be extremely unlikely, but the velocity of the gas molecules follows a Maxwell-Boltzmann distribution, so through some insane sequence of fusions and fissions you could spontaneously create exotic elements.

Anonymous

Anonymous Tue 15 Mar 2022 03:48:34 No.14304657 Report

Quoted By:

>>14304481
You got fooled by a troll

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Anonymous Tue 15 Mar 02:42:44 2022 No.14304565 View Reply Original Report

Quoted By: >>14304575

So how long does it take to reach the first stage level of scientist to actually play with this sh*t? I mean first stage is base level to be declared scientist to actually do "scientific compuuuting". not just math but with science.

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Millenium Prize Problems

Anonymous Sun 13 Mar 01:18:47 2022 No.14299316 View Reply Last 50 Original Report

Quoted By:

Which do you think will be solved next?
Which will probably the most difficult to prove if ever?

74 posts and 5 images omitted

Anonymous

Anonymous Mon 14 Mar 2022 08:28:19 No.14302315 Report

Quoted By: >>14303312

Come on guys, which one are we gonna solve?

Anonymous

Anonymous Mon 14 Mar 2022 17:44:16 No.14303312 Report

Quoted By:

>>14302315
Someone has to answer these to proceed on this
>>14301496

And these to proceed on the turbulence
>>14301486

Anonymous

Anonymous Tue 15 Mar 2022 01:13:46 No.14304380 Report

Quoted By:

So all those threads of show off math geniuses, who I'm sure alone are very smart, do not even think combining their awesome powers, could solve one of these, sheesh that's depressing

Anonymous

Anonymous Tue 15 Mar 2022 02:45:03 No.14304569 Report

Quoted By:

computer modern is a font for cargo-cultist wankers

Anonymous

Anonymous Tue 15 Mar 2022 02:46:09 No.14304571 Report

Quoted By:

>>14301502
>Even if there were an analytic solution to NS it's almost 100% likely that solution is to complicated to actually use practically.
People said the same thing about analytic solutions to the MHD equations. Then Spitzer came up with the Stellarator.

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Anonymous Mon 14 Mar 16:38:39 2022 No.14303150 View Reply Original Report

Quoted By:

We should send these guys into space so that when we get to a planet in billions of years we can find them again.

12 posts and 2 images omitted

Anonymous

Anonymous Tue 15 Mar 2022 02:32:32 No.14304541 Report

Quoted By:

>>14303401
>yes, and propagate life
Evolution does not have a purpose. You are mistaking evolution with God's creation.

Anonymous

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Anonymous Tue 15 Mar 2022 02:34:11 No.14304545 Report

Quoted By: >>14304561

>>14303327
>purpose of evolution

Anonymous

Anonymous Tue 15 Mar 2022 02:36:42 No.14304552 Report

Quoted By:

Evolution is not a god to worship you fucking retards. It doesn't have a purpose. Things exist because they survive, that's all there is to it. There is no "grand plan" for evolution, it's a process, not a cause that people can serve.

Anonymous

Anonymous Tue 15 Mar 2022 02:40:11 No.14304561 Report

Quoted By: >>14304568

>>14304545
I've been seeing that cat on this site for years and years and I just found out it's an elder scrolls webcomic

Anonymous

Anonymous Tue 15 Mar 2022 02:44:37 No.14304568 Report

Quoted By:

>>14304561
This is a board for learning new things, after all.

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/sfg/ Spaceflight General

Anonymous Mon 14 Mar 03:41:02 2022 No.14301860 View Reply Last 50 Original Report

Quoted By:

Astra style staging edition

560 posts and 85 images omitted

Anonymous

Anonymous Tue 15 Mar 2022 00:38:23 No.14304316 Report

Quoted By:

Staging
>>14304315
>>14304315
>>14304315

Anonymous

Anonymous Tue 15 Mar 2022 00:50:06 No.14304346 Report

Quoted By:

>>14302830
Nooooo my business plan

Anonymous

Anonymous Tue 15 Mar 2022 01:04:04 No.14304370 Report

Quoted By:

>>14302913
The rolled steel is higher performance than the printed stuff

Anonymous

Anonymous Tue 15 Mar 2022 01:16:06 No.14304383 Report

Quoted By:

>>14303289
I've settled for downrange recovery of the first stage and am working on a reusable upper stage with payload space
I have a reusable upper stage with no payload bay for orbital refueling but it's not that useful

Anonymous

Anonymous Tue 15 Mar 2022 02:41:21 No.14304563 Report

Quoted By:

>The one thing that Astra and spaceflight have in common is that we're trying to get multiple different types of satellites into space that will benefit the earth.
What did she mean by this?

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Anonymous Tue 15 Mar 02:11:18 2022 No.14304492 View Reply Original Report

Quoted By: >>14304505 >>14304549

>The universe is expanding at all points in space at the speed of light
>this means that the edge of the universe, wherever it is, is moving away from us far faster than the speed of light
>humanity will never know the secrets of the universe
>due to this space expansion eventually all galaxies will be stranded alone, again moving apart from each other at a far faster rate than light can even travel
>the Milky Way-Andromeda will be stuck, alone, in the blackness of space until all of the energy in the universe finally dissipates and everything goes dark
It’s so demoralizing bros
Why do we even bother if physics precludes us from ever really knowing the universe?

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