When does the future begin?
  • A_A A_A 1y ago 100%

    Anthropologically speaking this is the best answer. Our brain needs a certain span of time to establish perceived reality.

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  • When does the future begin?
  • A_A A_A 1y ago 100%

    No physical mechanisms predefines future events (or is there one ?).

    So, I could state that the future does not exist yet and the past as ceased to exist.

    in that statement I have a problem with the definition of existence. Does the definition of existence exist itself ? This is (is it ?) more a problem of terminology than philosophy or physics.

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  • [AJA] que la fête des grands-pères c'était aujourd'hui
  • A_A A_A 1y ago 100%

    Bonne fête Camus !
    (si toutefois vous êtes grand-père. Sinon, bonne fête à un grand-père de votre choix 😋)

    Votre imagination est juste car je n'étais pas au courant.

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  • "Initials" by "Florian Körner", licensed under "CC0 1.0". / Remix of the original. - Created with dicebear.comInitialsFlorian Körnerhttps://github.com/dicebear/dicebearHA
    Hacker News 1y ago
    Jump
    Single-bladed floating wind turbine promises half the cost, more power
  • A_A A_A 1y ago 100%

    I guess this tilted vertical axis wind turbine could be great on land as well.

    4
  • Why does thermodynamics laws look like a tautology ?
  • A_A A_A 1y ago 66%

    Thanks for your time and attention.

    We have never observed anything in the universe just popping into existence from nothing (...)

    if we did, that would be a major shift in physics. in this regards I heard of (or read of) two candidates :
    .1 if universe's expansion continues to accelerate, (it would mean) dark energy is increassing.
    .2 an excess of hydrogen (clouds) outside of galaxies was observed that is difficult to explain with current cosmology.

    I know these are not direct observation of something popping up, ...but still.

    1
  • Why does thermodynamics laws look like a tautology ?
  • A_A A_A 1y ago 66%

    I think there must be a mechanism behind the (stated) laws. This is what interest my reflection.

    1
  • Why does thermodynamics laws look like a tautology ?
  • A_A A_A 1y ago 40%

    On a side note :
    is there something in nature that prescribes the conservation of energy ?

    (please, if you answer this, do so under my other comment (big bang...) ...I don't want to lose track of the main topic).

    -1
  • Why does thermodynamics laws look like a tautology ?
  • A_A A_A 1y ago 33%

    I am trying to find a loophole for the origin of the big Bang or whatever created the universe.

    P.S. What I'm saying could be something like : "if a system is empty it doesn't contain the first law".

    -2
  • Why does thermodynamics laws look like a tautology ?
  • A_A A_A 1y ago 50%

    My misquotation was on purpose.
    in the same thread of thoughts : if there was a system without the first law, anything could appear as if by magic !
    ...that is, until the 1st law appears.

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  • cross-posted from: https://lemmy.ca/post/5016031 > 1^st^ law of thermodynamics : > There is something that will always be the same. > 2^nd^ law of thermodynamics : > Everything else always changes and never will be what it was before.

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    1^st^ law of thermodynamics : There is something that will always be the same. 2^nd^ law of thermodynamics : Everything else always changes and never will be what it was before.

    -8
    14
    High pasta prices set to boil over as Canada's wheat withers
  • A_A A_A 1y ago 100%

    Last i bought was $1.71 CAD / kg
    (made in Canada www.italpasta.com )

    @anotherlemmyuser 's is $1.06 us$ / 750g so ... $1.41 us$ / kg ... , so ... $1.90 CAD / kg

    The price has I've got in Canada, is about 10% lower than that one in Malaysia.

    2
  • China map: India lodges 'strong protest' over territory claims
  • A_A A_A 1y ago 100%

    Humanity is so stupid when it comes to "territory" and we are not the only species that acts like beasts about it.

    7
  • JWST Spots Giant Black Holes All Over the Early Universe | Quanta Magazine
  • A_A A_A 1y ago 100%

    I read through these and try to understand them but mostly I don't like those theories, because (in part) more and more there are disparities between them and observations.

    So I came up with some ideas myself, one of which I wrote in here :
    "New physical cosmological model : is it coherent ?"

    But it may take a few years or a few thousand before we have a good cosmology.

    2
  • Making security keys post quantum resilient
  • A_A A_A 1y ago 100%

    bad bot
    reposting this thing four times. bad.

    1
  • what is the mass of a cloud?
  • A_A A_A 1y ago 100%

    At sea level air is about 1.25 kg/m³, so for one cubic kilometer cloud that is :
    1 250 000 tons.

    I put your result into table to show a problem at 51 km and above... since density decreases monotically with altitude.

    mass (tons) altitude (km)
    1 250 000 0
    364 000 11
    88 000 20
    860 51
    64 71

    6
  • Gravity field scaling?
  • A_A A_A 1y ago 100%

    I did make I have made many mistakes, much worse than this one and on many occasions. I would say : don't be so hard on yourself since it's important to forgive ourselves.

    I do believe the following correction should be made again to your text though :

    Gravity is an [edit: inverse squared] function, so it gets weaker at an exponential a squared rate as you move away from the source.

    1
  • 196
    196 1y ago
    Jump
    Banana? Banana.
  • A_A A_A 1y ago 100%

    I believe in this community you have to write the word "rule" in the title, like so :
    Banana? Banana rules !
    (you can edit the title even after posting, that is, if you want so)

    3
  • Where do I start reading Iron Man?
  • A_A A_A 1y ago 64%

    You can start where ever you want :

    • in the kitchen,
    • on the bus, etc...

    (Please excuse this joke : I could not resist)

    4
  • Gravity field scaling?
  • A_A A_A 1y ago 75%

    Hey @Jeredin@lemm.ee

    This one, @FlowVoid@midwest.social, has the correct answer...

    So, don't believe in the crackpot idea that it would be exponential

    2
  • New physical cosmological model : is it coherent ?
  • A_A A_A 1y ago 100%

    I need some rest now. I will try to be back some other time.

    1
  • The following mechanism, by continually creating matter in the universe, **if self coherent**, would solve many unsolved physical problems : this cosmology would do without a big bang. 3d interference pattern of [gravitational waves](https://lemmy.world/post/782185) would create `rogue waves` at specific points in SpaceTime that would create matter and the CMB. Creation of matter and gravity fields, **at net zero energy** would increase the expansion of the universe. The perfect black body curve of the CMB would result from the exponential expansion of the universe.

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    Just wanted to browse **ipfs**. So I went here : https://en.m.wikipedia.org/wiki/InterPlanetary_File_System ::: spoiler it says... : Opera (browser) for Android has default support for IPFS, allowing mobile users to browse **ipfs:// links** to access data on the IPFS network. ::: So I just need one "ipfs:// links" right ? ... let's find one ! ::: spoiler So I navigate through these... : https://en.m.wikipedia.org/wiki/Filecoin https://filecoin.io/ https://filscan.io/tipset/chain/ https://filscan.io/miner/f01043193/ ::: There, I finally get a link which I try and... it crashes the browser ! Do you know an easy way to get to one of those links (ipfs://) from a browser ?

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