Search found 913 matches

by p1t1o
Fri May 24, 2019 2:22 pm UTC
Forum: Science
Topic: Negative Quantum Space-Time
Replies: 22
Views: 219

Re: Negative Quantum Space-Time

Duration is directly analogous to length in classical physics. In special relativity, the spacetime interval is distance² - c² * duration ², and it's the minus sign that distinguishes the time coordinate from the spatial coordinates (note that you could equivalently define it as the opposite differ...
by p1t1o
Fri May 24, 2019 11:07 am UTC
Forum: Science
Topic: Negative Quantum Space-Time
Replies: 22
Views: 219

Re: Negative Quantum Space-Time

Calling it therefore "not real" needs some justification. I didnt say it wasnt real, or not a dimension, but that it wasnt physical. "Time" is, in physical reality - and as far as I understand - not equivalent to a physical property/length - though it may be treated in a similar...
by p1t1o
Fri May 24, 2019 10:04 am UTC
Forum: Science
Topic: Negative Quantum Space-Time
Replies: 22
Views: 219

Re: Negative Quantum Space-Time

pittsburghjoe wrote:If something was tiny and didn't inhabit spacetime ..I'd say it would probably do quantum weird things.


Why would you say that?
What "quantum weird things"?
What are you trying to say?
What are the properties of something that does not "inhabit spacetime"?
How do you know?
by p1t1o
Thu May 23, 2019 4:15 pm UTC
Forum: Science
Topic: Negative Quantum Space-Time
Replies: 22
Views: 219

Re: Negative Quantum Space-Time

space-time is a dimension outside of width, depth, height. If a 3d object, on our scale, lost a dimension it wouldn't be visible to us. Thing is, time *isnt* actually a physical dimension. It is sometimes useful to imagine it as one, but it isnt another "length" that we just happen to be ...
by p1t1o
Thu May 23, 2019 3:49 pm UTC
Forum: Science
Topic: Negative Quantum Space-Time
Replies: 22
Views: 219

Re: Negative Quantum Space-Time

Tell me if you think I'm on to something. In a word - no. But that is ok, I think I can speak for most of us when I say we have all been where you are. Some questions for you that might help: What is your definition of a "genuine" 3d+1 "space-time object"? Do you consider, say, ...
by p1t1o
Fri May 17, 2019 9:09 am UTC
Forum: Science
Topic: Universal Stack
Replies: 11
Views: 457

Re: Universal Stack

Yeah well it's a thing and not my original thing so whatever if you don't like the premise of this 'game' don't 'play'. That mathematics can be used to describe the universe does not make a list into a machine, but fair point, the deeper you dive into physics and maths, the closer you get to abstra...
by p1t1o
Thu May 16, 2019 10:45 am UTC
Forum: Science
Topic: Universal Stack
Replies: 11
Views: 457

Re: Universal Stack

I think the jump from "list" to "universe simulation machine" is a little...bonkers, to put it very mildly
by p1t1o
Mon May 13, 2019 9:29 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2934
Views: 701307

Re: Miscellaneous Science Questions

yeah, if instead of being in freefall, you were firing a jetpack, it'd have some additional energy contribution. Is that what you're thinking of? I'm not sure what you mean exactly by "impact on relativity." I think I'm being stupid. Thinking about it, and afaik, freefall has no impact on...
by p1t1o
Thu May 02, 2019 3:51 pm UTC
Forum: Science
Topic: Is it possible to escape from a black hole using another black hole?
Replies: 56
Views: 2294

Re: Is it possible to escape from a black hole using another black hole?

If you put in lava rather than cold matter, the extra heat energy would register as mass-energy right? You can increase the mass of a BH without adding any matter at all, you can just add energy (photons) and the mass increases IIRC. And I was discussing the antimatter question recently too - but is...
by p1t1o
Thu Apr 18, 2019 1:02 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 248
Views: 43782

Re: Science fleeting thoughts

Sableagle wrote:2) The rounding happens at the end. Rounding everything to 1 s.f. as you go is for figuring out which county you'll be in on Tuesday, not for building model aircraft.


femto-Hertz...
by p1t1o
Thu Apr 18, 2019 10:25 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 248
Views: 43782

Re: Science fleeting thoughts

Was it necessary to give the diameter of the basketballs to the nearest Angstrom lol!

And its two million ton mass to the nearest milligram? XD

But that rpm figure given to the nearest 10th of a femto-Hertz is a prize winner for sure!
by p1t1o
Wed Apr 17, 2019 4:14 pm UTC
Forum: Science
Topic: Event Horizon Telescope image
Replies: 24
Views: 1340

Re: Event Horizon Telescope image

M87 is the galaxy designation, M87* the designation of this specific object/phenomenon within it. SFAIK, nobody has really though of naming the host galaxy (just other designations, like NGC something and Virgo A?), but I'm not sure whether that's even required or expected. Then how come ours is Sa...
by p1t1o
Thu Apr 11, 2019 9:22 am UTC
Forum: Science
Topic: Event Horizon Telescope image
Replies: 24
Views: 1340

Event Horizon Telescope image

Cool isnt it. My question is - why is it an image of M87* and not Saggitarius A*, which is 1000times closer? Is there something that makes M87* a better candidate for observation, even though its very much more distant? Or did M87* just happen to be first on the list of projects and it was their tur...
by p1t1o
Tue Mar 26, 2019 1:54 pm UTC
Forum: Science
Topic: Verifying physics at home
Replies: 15
Views: 1545

Re: Verifying physics at home

If using a spectrometer, wouldnt you also have to derive how it works? If Im doubting any experiment not done by me, then if someone hands me a spectrometer, its just a box with lights on that agrees with what you say. Sorry, you gotta build a spectrometer. And also prove why it works. Using first p...
by p1t1o
Mon Mar 25, 2019 2:00 pm UTC
Forum: Science
Topic: Verifying physics at home
Replies: 15
Views: 1545

Re: Verifying physics at home

This is my favorite quantum thingy, and it is experimentally verifiable using fairly simple equipment:

https://en.wikipedia.org/wiki/Elitzur%E ... omb_tester
by p1t1o
Fri Mar 15, 2019 10:39 am UTC
Forum: Science
Topic: What if the second law was breakable?
Replies: 72
Views: 5643

Re: What if the second law was breakable?

I have been brainstorming ideas recently for a short story about a child prodigy genius who at a very young age, while voraciously devouring encyclopedias and such, realizes just how many existential threats to his life, human life, and life generally there are, and dedicates himself wholeheartedly...
by p1t1o
Fri Mar 15, 2019 9:12 am UTC
Forum: Science
Topic: Least human organism susceptible to cancer?
Replies: 11
Views: 1229

Re: Least human organism sucetable to cancer?

Heck even trees and plants get it. (I have learned that tumours are not necessarily cancer.)
**
Here's a thought - what is the difference between a replicating single-celled organism and a single celled organism with cancer?
by p1t1o
Wed Mar 13, 2019 9:44 am UTC
Forum: Science
Topic: What if the second law was breakable?
Replies: 72
Views: 5643

Re: What if the second law was breakable?

So what impact does that have on the contraction of space?

Im not sure what the current state-of-the-art is, whether a "big crunch" has now been ruled out, but would it have the reverse effect? Would it suck energy out of systems? I cant quite get my imagination to work.
by p1t1o
Tue Mar 12, 2019 2:22 pm UTC
Forum: Science
Topic: What if the second law was breakable?
Replies: 72
Views: 5643

Re: What if the second law was breakable?

So really all that matters is that there be an unending supply of usable energy. Even a trickle of it. Which an expanding universe gives us. The rest is just engineering, and patience. I have recently heard of the expansion of space "violating" conservation of energy (or it may just come ...
by p1t1o
Mon Mar 11, 2019 4:50 pm UTC
Forum: Science
Topic: What if the second law was breakable?
Replies: 72
Views: 5643

Re: What if the second law was breakable?

Well, my point was that, even if there was a Kardashev Type IV civilization out there already disassembling things now, it would still take them much longer than the current age of the universe before they would be finished. Agreed. But I still jar at the language. If there is anyone left to be awa...
by p1t1o
Mon Mar 11, 2019 12:00 pm UTC
Forum: Science
Topic: What if the second law was breakable?
Replies: 72
Views: 5643

Re: What if the second law was breakable?

Some tricky wording being thrown around - To be clear, all of the stars have to die in order to reduce all matter to a state where no more work can be done. So the question of whether or not the death of the stars could stop them is moot. The aliens themselves have to die too. The final composition ...
by p1t1o
Fri Mar 08, 2019 9:43 am UTC
Forum: Science
Topic: Circadian Clock
Replies: 15
Views: 1636

Re: Circadian Clock

gmalivuk wrote:That page says "the body gets different types of sleep at different times of the day", which means it's not a true 4-hour cycle, it's a 24h cycle with multiple bits of sleep instead of one long sleep.


It'd still work well if your planet had a 4hr day ;)
by p1t1o
Thu Mar 07, 2019 11:27 am UTC
Forum: Science
Topic: Circadian Clock
Replies: 15
Views: 1636

Re: Circadian Clock

Its possible to adapt to a 4 hour cycle even, its call "The Uberman" and is extremely difficult to get into, but once you are in for a few weeks, it become natural. Based on 20 minute naps every 3-4 hours it allegedly allows you to rest sufficiently on a minimum of sleep, unlocking hours o...
by p1t1o
Fri Mar 01, 2019 10:32 am UTC
Forum: Science
Topic: Lorentz force
Replies: 16
Views: 1791

Re: Lorentz force

@prosilo Dont take it personally, this is the internet. There are people around on the web that will argue to the death that 1*1 cannot equal 1 (Im serious. This is a real thing that some people believe) and that modern mathematics is a conspiracy. So when people turn up questioning extremely well e...
by p1t1o
Mon Feb 25, 2019 10:31 am UTC
Forum: Science
Topic: Serious Chemistry Challenge, but hopefully interesting
Replies: 3
Views: 2017

Re: Serious Chemistry Challenge, but hopefully interesting

As it happens there was a whole thing where NMR revealed average molecular weight well in excess of what we were expecting, precipitating a discussion with the supplier where we were like "This stuff is WHAT?!" and then another whole thing where we had to change our regulatory requirements...
by p1t1o
Fri Feb 22, 2019 4:40 pm UTC
Forum: Science
Topic: What if the second law was breakable?
Replies: 72
Views: 5643

Re: What if the second law was breakable?

quantropy wrote:That's easy, we happen to live in one (http://www.preposterousuniverse.com/blo ... conserved/).


<reads>

Brain: Ooooooohhhh noooooooo


Well look here, SOMETHING has to be conserved.
by p1t1o
Fri Feb 22, 2019 1:40 pm UTC
Forum: Science
Topic: What if the second law was breakable?
Replies: 72
Views: 5643

Re: What if the second law was breakable?

elasto wrote:
So long as the total entropy of all of the dimensions/universes grows, our universe's entropy can go as low as you like.


Wait so the universe is not a closed system, but the "multiverse" is?
by p1t1o
Fri Feb 22, 2019 10:31 am UTC
Forum: Science
Topic: What if the second law was breakable?
Replies: 72
Views: 5643

Re: What if the second law was breakable?

Too fundamental a change to even start speculating.

Like asking

"How would biology work if we got rid of protons?"
by p1t1o
Wed Feb 20, 2019 4:35 pm UTC
Forum: Science
Topic: Are these recognized visual phenomena?
Replies: 12
Views: 5064

Re: Are these recognized visual phenomena?

I wonder if this is it with the blue sky. Your best colour perception is in the centre of your vision, very little in the periphery. Your eye constantly (even when you think you are keeping your vision fixed on a point) moving in little jerky movements that helps your brain build up a complete pictu...
by p1t1o
Fri Jan 25, 2019 8:54 am UTC
Forum: Science
Topic: Consequences of climate change
Replies: 90
Views: 24975

Re: Consequences of climate change

Sounds deep but doesnt hold water. We could easily still have capitalism with clean energy.
by p1t1o
Mon Jan 21, 2019 3:06 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 248
Views: 43782

Re: Science fleeting thoughts

3-6cm
by p1t1o
Wed Jan 09, 2019 3:58 pm UTC
Forum: Science
Topic: quarkcosh1's miscellaneous science posts
Replies: 73
Views: 11546

Re: quarkcosh1's miscellaneous science posts

quarkcosh1 wrote:I am focused on simple programs.


Formula to calculate digits of pi:

pi = C/d
by p1t1o
Wed Jan 09, 2019 3:05 pm UTC
Forum: Science
Topic: quarkcosh1's miscellaneous science posts
Replies: 73
Views: 11546

Re: quarkcosh1's miscellaneous science posts

quarkcosh, you know the bible is strongly believed to be encoded within the digits of pi? And all of shakespeares works? And actually this comment I am typing right now? It can be proven to have an exceptionally high probability. But guess what? It means precisely nothing, like the vast [VAST] major...
by p1t1o
Tue Jan 08, 2019 9:28 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2934
Views: 701307

Re: Miscellaneous Science Questions

Please don't accidentally disprove all of existence guys, I just started looking for a house.
by p1t1o
Fri Dec 21, 2018 4:14 pm UTC
Forum: Science
Topic: quarkcosh1's miscellaneous science posts
Replies: 73
Views: 11546

Re: quarkcosh1's miscellaneous science posts

1. who is Catherine?
2. is "cream soda" a good or bad thing?
by p1t1o
Fri Dec 21, 2018 2:34 pm UTC
Forum: Science
Topic: What is my Exact Mailing Address?
Replies: 11
Views: 2759

Re: What is my Exact Mailing Address?

ijuin wrote:C-137? I thought that we were Earth-1218?


You might have taken a wrong turn, if you went past the hyperspace bypass, you went too far.
by p1t1o
Fri Dec 21, 2018 2:25 pm UTC
Forum: Science
Topic: quarkcosh1's miscellaneous science posts
Replies: 73
Views: 11546

Re: quarkcosh1's miscellaneous science posts

You could call them coincidences but thats just another name for correlations.. Oh me yarm NO! That is precisely , not science. (ok why is "oh em gee", literally the 3-letter acronym, censored with "oh me yarm" which sounds like gibberish? I find my words being replaced with gib...
by p1t1o
Wed Dec 19, 2018 2:44 pm UTC
Forum: Science
Topic: What is my Exact Mailing Address?
Replies: 11
Views: 2759

Re: What is my Exact Mailing Address?

Milky Way Galaxy,
Virgo Cluster,
Virgo Supercluster,
Laniakea Supercluster,
Nr. Great Attractor,
Space/Time C-137
The Multiverse
Conceptual Existensialism
by p1t1o
Wed Dec 12, 2018 2:20 pm UTC
Forum: Science
Topic: Building a chair out of glue
Replies: 6
Views: 2024

Re: Building a chair out of glue

glue chair = plastic chair (it might not be the exactly right polymer, but its pretty danged close enough) Think about it - take a plastic chair: if made from wood of the same thickness, it would be extremely fragile, but a plastic chair is more than robust enough for some reasonably heavy-handed use.
by p1t1o
Thu Dec 06, 2018 2:20 pm UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 7479

Re: Biology: Wolves vs. Humans

a single bite could be quite serious if it's from a real dog, not a house rat. and dogs have additionally four nasty claws whith which they can bother you while you try to get a hold on their neck. i don't think it's as clear as that. we don't have any natural weapon which could pierce a wolf's ski...

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