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Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

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  • A practical demonstration on earth sciences regarding droughts and then rain.

    https://twitter.com/fasc1nate/status...ECYq1s1BFyVAGw
    "The party told you to reject the evidence of your eyes and ears. It was their final, most essential command." George Orwell, 1984

    "One does not simply walk into Mordor. Its Black Gates are guarded by more than just Orcs. There is evil there that does not sleep, and the Great Eye is ever watchful. It is a barren wasteland, riddled with fire and ash and dust, the very air you breathe is a poisonous fume." Boromir

    "Good news! We have a delivery." Professor Farnsworth

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    • Originally posted by St. Clown View Post
      A practical demonstration on earth sciences regarding droughts and then rain.

      https://twitter.com/fasc1nate/status...ECYq1s1BFyVAGw
      That is so ****ing counterintuitive.
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      • Originally posted by Kepler View Post

        That is so ****ing counterintuitive.
        Tell that to my lawn. If I want a good soaking rain (single storm, not an all-day rain) to actually matter, I need to pre-wet the lawn thanks to the concrete, errrr, I mean clay. In fact, UMN extension actually recommends prewetting lawns on slopes with high clay content.
        Code:
        As of 9/21/10:         As of 9/13/10:
        College Hockey 6       College Football 0
        BTHC 4                 WCHA FC:  1
        Originally posted by SanTropez
        May your paint thinner run dry and the fleas of a thousand camels infest your dead deer.
        Originally posted by bigblue_dl
        I don't even know how to classify magic vagina smoke babies..
        Originally posted by Kepler
        When the giraffes start building radio telescopes they can join too.
        He's probably going to be a superstar but that man has more baggage than North West

        Comment


        • I believe it, trust me -- I've seen flashfloods in desert. It just makes no intuitive sense to me at all. I would think it was about saturation. I fully realize (well, duh) that it isn't.

          Kepler don't think it be like that, but it do.
          Cornell University
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          • Originally posted by St. Clown View Post
            A practical demonstration on earth sciences regarding droughts and then rain.

            https://twitter.com/fasc1nate/status...ECYq1s1BFyVAGw
            Flash floods in the desert are real, sure. Deserts are not just big piles of sand- most are hard packed ground. Really hard packed ground.

            But that example is very flawed. Looking at the bubbles, the air is leaking in via the grass. The grass is thicker and provides more gaps between the ground and the cup on the wet land. And the super dry- the grass is easily compressed to seal off.

            Completely saturated ground isn't a good way to absorb water- which is what is implied by that experiment- it's as likely to flood as the dry, hard ground is- as there's no place for the groundwater to go. We've had more than one flood in SE MI with very wet ground.

            The other thing people need to see in that is to make sure your grass has plenty of humus to work with. That way when it is really dry, the water has a place to go to get started before just running off.

            edit- a better way to show that is to shave the grass down to the ground, and make sure there are roots to provide an air path. And even then, the difference between super dry ground that has some kind of grass (like the prairies) and just as dry desert will be drastically different, since the ground cover slows the water down and should help it go down. Deserts have so little ground cover, relatively, that it's just not able to absorb water.
            Last edited by MichVandal; 10-11-2022, 07:34 PM.

            Comment


            • Originally posted by St. Clown View Post
              A practical demonstration on earth sciences regarding droughts and then rain.

              https://twitter.com/fasc1nate/status...ECYq1s1BFyVAGw
              Yep. A great representation of the phenomenon.
              “Demolish the bridges behind you… then there is no choice but to build again.”

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              • Originally posted by MichVandal View Post
                But that example is very flawed. Looking at the bubbles, the air is leaking in via the grass. The grass is thicker and provides more gaps between the ground and the cup on the wet land. And the super dry- the grass is easily compressed to seal off.
                It also depends on the makeup of the soil. DX is exactly right because clay has an elasticity to it and shrinks when dry. Moistening it allows it to expand, which then helps it take on more water versus going from dry->wet. It doesnt have time to moisten in a flash flood situation and most of the clay stays dry.

                (Somewhere DGF is Googling "'Michael Scott That's What She Said' dot JPG.")

                Grass grows best on black dirt which has some organics in it, some clay, and other soil/stones. The organics create air voids as they decompose, allowing for gaps foe water to traverse or store.

                The regulation of soil moisture is why farmers install field tile to ensure that there isn't an oversaturation of the soil, especially from subsurface water.
                “Demolish the bridges behind you… then there is no choice but to build again.”

                Live Radio from 100.3

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                • Sandy loam. Fancy way of saying black soil, plus clay, plus sand is best.
                  Code:
                  As of 9/21/10:         As of 9/13/10:
                  College Hockey 6       College Football 0
                  BTHC 4                 WCHA FC:  1
                  Originally posted by SanTropez
                  May your paint thinner run dry and the fleas of a thousand camels infest your dead deer.
                  Originally posted by bigblue_dl
                  I don't even know how to classify magic vagina smoke babies..
                  Originally posted by Kepler
                  When the giraffes start building radio telescopes they can join too.
                  He's probably going to be a superstar but that man has more baggage than North West

                  Comment


                  • Originally posted by dxmnkd316 View Post
                    Sandy loam
                    Sounds like a 60s British pop singer.
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                    • Black hole burps out star it swallowed years ago

                      https://nerdist.com/article/black-ho...gn=social+flow
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                      • Originally posted by MissThundercat View Post
                        Black hole burps out star it swallowed years ago

                        https://nerdist.com/article/black-ho...gn=social+flow
                        Wow, I had no idea these things occurred in human-sized time intervals. I figured it was centuries at least. This is the Five Second Rule by interstellar standards.
                        Cornell University
                        National Champion 1967, 1970
                        ECAC Champion 1967, 1968, 1969, 1970, 1973, 1980, 1986, 1996, 1997, 2003, 2005, 2010
                        Ivy League Champion 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1977, 1978, 1983, 1984, 1985, 1996, 1997, 2002, 2003, 2004, 2005, 2012, 2014, 2018, 2019, 2020

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                        • Originally posted by Kepler View Post

                          Wow, I had no idea these things occurred in human-sized time intervals. I figured it was centuries at least. This is the Five Second Rule by interstellar standards.
                          lol

                          And agree. I thought it took decades for it to accelerate and send it out on jets
                          Code:
                          As of 9/21/10:         As of 9/13/10:
                          College Hockey 6       College Football 0
                          BTHC 4                 WCHA FC:  1
                          Originally posted by SanTropez
                          May your paint thinner run dry and the fleas of a thousand camels infest your dead deer.
                          Originally posted by bigblue_dl
                          I don't even know how to classify magic vagina smoke babies..
                          Originally posted by Kepler
                          When the giraffes start building radio telescopes they can join too.
                          He's probably going to be a superstar but that man has more baggage than North West

                          Comment


                          • Originally posted by Kepler View Post

                            Wow, I had no idea these things occurred in human-sized time intervals. I figured it was centuries at least. This is the Five Second Rule by interstellar standards.
                            Maybe within the 5 second rule, but clearly the star was infected with something to cause that kind of indigestion.

                            Comment


                            • Originally posted by MichVandal View Post

                              Maybe within the 5 second rule, but clearly the star was infected with something to cause that kind of indigestion.
                              Thanks good it wasn't the other end
                              Code:
                              As of 9/21/10:         As of 9/13/10:
                              College Hockey 6       College Football 0
                              BTHC 4                 WCHA FC:  1
                              Originally posted by SanTropez
                              May your paint thinner run dry and the fleas of a thousand camels infest your dead deer.
                              Originally posted by bigblue_dl
                              I don't even know how to classify magic vagina smoke babies..
                              Originally posted by Kepler
                              When the giraffes start building radio telescopes they can join too.
                              He's probably going to be a superstar but that man has more baggage than North West

                              Comment


                              • Originally posted by dxmnkd316 View Post

                                Thanks good it wasn't the other end
                                Spoiler: our universe is the other end.
                                Cornell University
                                National Champion 1967, 1970
                                ECAC Champion 1967, 1968, 1969, 1970, 1973, 1980, 1986, 1996, 1997, 2003, 2005, 2010
                                Ivy League Champion 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1977, 1978, 1983, 1984, 1985, 1996, 1997, 2002, 2003, 2004, 2005, 2012, 2014, 2018, 2019, 2020

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