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  1. #1
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    a thread about nothing ...

    or, a thread about anything



  2. #2
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    Cool show. I thought he left out the 'GOD' aspect in the considerations though.
    "You boys are really making this thing harder than it has to be". Me

    “They can’t do anything about it unless they start shooting people, and presumably they won’t do that.” Protester & confirmed idiot.

    "I am not here to rescue you, I am bringing you along for emergency rations" Quark.

    "This is me, I'm not at home. If you'd like to reach me, leave me alone." Sherl Crow

    I give free estimates [Wild Ass Guesses] over the phone.

  3. #3
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  4. #4
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    There is still so much we don't know about the universe that it's impossible to form a rational conclusion.

    There's a lot we have yet to learn about our own planet and our nearest neighbors. We are infants.

    For example, take a look at deep sea thermal vents.
    .
    .
    Creatures of the Deep Sea

    Deep Sea Hydrothermal Vents

    In the late 1970's, scientists on a routine study of the ocean floor in the Pacific made a discovery that would rock the entire scientific community. On the East Pacific Rise not far from the Galapagos Islands, nearly 8000 feet below the surface, was a strange alien landscape littered with what looked like chimneys expelling clouds of black smoke. Surrounding these chimneys was a unique type of ecosystem that had never been seen before. Until this day, science had always assumed that all life on Earth obtained its energy from the Sun. The plants convert sunlight into energy through a process called photosynthesis. The plants, in turn, provide food for countless species of animals in a complex web of life. But here, facing the deep-sea submersibles, was a sight that challenged those assumptions. Here was proof for the first time that life could be sustained by the Earth itself.

    Science had discovered deep-sea hydrothermal vents. These vents occur in geologically active regions of the ocean floor. Within these regions, seawater seeps down deep into the Earth's crust through cracks and fissures in the ocean floor. This water is then heated by magma below the surface. As the water is heated to a boil, it expands and rises back to the surface. On it's way back up through the cracks and fissures through which it fell, the hot water dissolves minerals and other chemicals from the rock. When it reaches the ocean floor, the water is a dark, chemical soup. Some of the minerals precipitate out of the seawater and harden on the rim of the vent. Over time, the rim of the vent is built up into a tall, chimney-like structure. The dark color of the water spewing forth from these vents has earned them the name, "black smokers". The temperature of the water coming out of these vents exceeds 360º. The real surprise was the discovery that a myriad of life forms actually live and thrive around these vents, totally cut off from the world of sunlight.

    Incredible deep-sea creatures have been known for quite some time. But these animals all depended on the regions above for their sustenance. They feed on small scraps of food and dead animals that fall from above. Here at the vents, though, something entirely different was taking place. These organisms were getting their food directly from the vents themselves. This process is known as chemosynthesis. Bacteria in the water actually feed on what would otherwise be a lethal soup of noxious chemicals. Smaller animals feed on these bacteria, and these smaller animals provide food for the larger animals. It is an entire ecosystem totally separate from the world of light. A large number of strange and wondrous creatures have been found at these vent sites. Giant tube worms eight feet tall dominate the landscape. Tiny bacteria living inside make food for the worms. Small shrimps and crabs feed on the tube worms. Clams cover the ocean floor. These waters are so fertile that shrimps have been known to literally number in the millions near these vents.

    http://www.seasky.org/deep-sea/hydrothermal-vents.html


    Could primitive building blocks of life have been formed in such places? Some scientists think so.
    .
    Hydrothermal vents and the origins of life

    Debate rages between biologists and chemists over whether life began on land or under the sea. Rachel Brazil looks at the arguments

    The question ‘How did life begin?’ is closely linked to the question ‘Where did life begin?’ Most experts agree over ‘when’: 3.8–4 billion years ago. But there is still no consensus as to the environment that could have fostered this event. Since their discovery, deep sea hydrothermal vents have been suggested as the birthplace of life, particularly alkaline vents, like those found at ‘the Lost City’ field in the mid-Atlantic. But not everyone is convinced that life started in the sea – many say the chemistry just won’t work and are looking for a land-based birthplace. With several hypotheses in play, the race is on to replicate the conditions that allowed life to emerge.

    Read the rest:
    https://www.chemistryworld.com/featu...007088.article
    Vacuum Technology:
    CRUD = Contamination Resulting in Undesirable Deposits.
    CRAPP = Contamination Resulting in Additional Partial Pressure.

    Change your vacuum pump oil now.

    Test. Testing, 1,2,3.

  5. #5
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  6. #6
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  7. #7
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  8. #8
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    Alternative theory of gravity makes a nearly testable prediction
    .
    From our current perspective, the Universe seems to be dominated by two things we find frustratingly difficult to understand. One of these is dark matter, which describes the fact that everything from galaxies on up behaves as if it has more mass than we can detect. While that has spawned extensive searches for particles that could account for the visual discrepancy, it has also triggered the development of alternative theories of gravity, ones that can replace relativity while accounting for the discrepancies in apparent mass.

    So far, these proposals have fallen well short of replacing general relativity. And they say nothing about the other big mystery, dark energy, which appears to be accelerating the expansion of the Universe. Instead, researchers have developed an entirely separate class of theories that could modify gravity in a way that eliminates the need for dark energy. Now, researchers have run simulations of galaxy and star formation using this alternative version of physics, and they found we might be on the cusp of testing some of them.

    https://arstechnica.com/science/2019...le-prediction/
    Vacuum Technology:
    CRUD = Contamination Resulting in Undesirable Deposits.
    CRAPP = Contamination Resulting in Additional Partial Pressure.

    Change your vacuum pump oil now.

    Test. Testing, 1,2,3.

  9. #9
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    Quote Originally Posted by Space Racer View Post
    Alternative theory of gravity makes a nearly testable prediction
    .
    From our current perspective, the Universe seems to be dominated by two things we find frustratingly difficult to understand. One of these is dark matter, which describes the fact that everything from galaxies on up behaves as if it has more mass than we can detect. While that has spawned extensive searches for particles that could account for the visual discrepancy, it has also triggered the development of alternative theories of gravity, ones that can replace relativity while accounting for the discrepancies in apparent mass.

    So far, these proposals have fallen well short of replacing general relativity. And they say nothing about the other big mystery, dark energy, which appears to be accelerating the expansion of the Universe. Instead, researchers have developed an entirely separate class of theories that could modify gravity in a way that eliminates the need for dark energy. Now, researchers have run simulations of galaxy and star formation using this alternative version of physics, and they found we might be on the cusp of testing some of them.

    https://arstechnica.com/science/2019...le-prediction/
    personally not sure I buy into the whole light emitting ' photon ' thing, that a light emits photons and that is how it is seen, the light would have to be emitting photons in every direction every millisecond, how many photons does a light have ? maybe a light ' excites ' some kind of particle / force around it and then that particle / force excites others around it until it is ' seen ', and those particles / forces are what is ' dark energy ' or ' dark matter ' ... kind of like how ' sound waves ' travel except different ...... but then I don't know, I am still trying to figure out the best way to evacuate particles from an HVACR system, certain things reach a certain complexity I don't even try or have the desire to understand

  10. #10
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    Quote Originally Posted by hvacskills View Post
    or, a thread about anything


    OR, maybe about EVERYTHING!

  11. #11
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  12. #12
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    don't really care about the rims on my car, or the roll in my pocket from selling drugs, not really wanting to shoot anybody so could I care less about the drive-by from the homies down the street ... just want to listen to some good music ....


  13. #13
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    not to leave out the slightly older crowd, but then good music is timeless anyhow ...



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