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Five things we still don’t know about water

nautil.us

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Re: Five things we still don’t know about water

#61

Post by betenoire »

mensetmanusman wrote: post #51
anitil wrote: post #46

Earlier quoted context omitted.

Because I had to look it up : > 2008 Nobel Prize in Physiology or Medicine for his discovery of the human immunodeficiency virus (HIV) > During the COVID-19 pandemic, Montagnier was a promoter of the conspiracy theory that SARS-CoV-2, the causative virus, was deliberately created in, and thereafter escaped from a laboratory. https://en.wikipedia.org/wiki/Luc_Montagnier

I like how framing a hypothesis against the norm was framed as a conspiracy. Ha. Now we know that there were GoF research proposals by the same scientists squashing these ‘conspiracies’. Wups conflict of interest.

If it is man-made, and they are keeping that from us, then it is a conspiracy. Therefore, conspiracy theory.

It's not because it us "against the norm", it is because the theory itself clearly involves a conspiracy.

Re: Five things we still don’t know about water

#63

Post by westurner »

amelius wrote: post #35

Also interesting: https://sciencenordic.com/chemistry-climate-denmark/the-eart... > The Earth has lost a quarter of its water > In its early history, the Earth's oceans contained significantly more water than they do today. A new study indicates that hydrogen from split water molecules has escaped into space.

But where did the water come from? Neptune? Europa? Comet(s)? Is it just the distance to our nearest star in our habitable zone here that results in liquid water being likely?

From the article:

> But the exact mechanism for how water evaporates isn’t completely understood. The evaporation rate is traditionally represented in terms of a rate of collision between molecules, multiplied by a fudge factor called the evaporation coefficient, which varies between zero and one. Experimental determination of this coefficient, spanning several decades, has varied over three orders of magnitude.

From https://en.wikipedia.org/wiki/Evaporation :

> Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase.[1] The surrounding gas must not be saturated with the evaporating substance. When the molecules of the liquid collide, they transfer energy to each other based on how they collide with each other. When a molecule near the surface absorbs enough energy to overcome the vapor pressure, it will escape and enter the surrounding air as a gas.[2] When evaporation occurs, the energy removed from the vaporized liquid will reduce the temperature of the liquid, resulting in evaporative cooling.[3]

Re: Five things we still don’t know about water

#64

Post by ramraj07 »

dluan wrote: post #27

Most biological perspectives think that water behaves a certain way, which is like bulk water, when in fact at certain scales it behaves very differently, especially at interfaces and surfaces. For example, it's possible to draw flow across a charged surface where you can use it to effectively purify or separate water from things floating in it. This is useful when trying to filter out baddies like viruses and bacter…

The five things mentioned in the article are clearly observed unknowns about water. Water memory and other “out there” theories are exactly that - out there with minimal or no evidence (if not mainly evidence to the contrary), so most people don’t give it a serious thought. You’re free of course to still formulate the hypothesis and test it, but it’s not totally surprising you’re not able to convince more people to take it seriously until you show real data. Not that I appreciate the way academia works but we can’t blame them for our inability to prove our pet theories.

Re: Five things we still don’t know about water

#65

Post by andreareina »

AnimalMuppet wrote: post #32
feoren wrote: post #31

Earlier quoted context omitted.

> inflation necessarily predates big bang A tangent, but how can anything pre -date the big bang? Time itself is supposed to have been created at that point. Did you mean inflation necessarily follows a big bang?

No. There is a (IIUC, recently floated, and non mainstream) theory that inflation did in fact precede the big bang. No, I don't understand how that's possible, or even a meaningful statement. There was an article on it here on HN, almost certainly within the last month. I don't recall more.

Inflationary cosmology[1] is mostly accepted in its basic form

[1] https://en.wikipedia.org/wiki/Inflation_(cosmology)

Re: Five things we still don’t know about water

#67

Post by [deleted] »

ramraj07 wrote: post #64
dluan wrote: post #27

Most biological perspectives think that water behaves a certain way, which is like bulk water, when in fact at certain scales it behaves very differently, especially at interfaces and surfaces. For example, it's possible to draw flow across a charged surface where you can use it to effectively purify or separate water from things floating in it. This is useful when trying to filter out baddies like viruses and bacter…

The five things mentioned in the article are clearly observed unknowns about water. Water memory and other “out there” theories are exactly that - out there with minimal or no evidence (if not mainly evidence to the contrary), so most people don’t give it a serious thought. You’re free of course to still formulate the hypothesis and test it, but it’s not totally surprising you’re not able to convince more people to t…

[deleted]

Re: Five things we still don’t know about water

#68

Post by dotancohen »

ars wrote: post #55
amelius wrote: post #35

Also interesting: https://sciencenordic.com/chemistry-climate-denmark/the-eart... > The Earth has lost a quarter of its water > In its early history, the Earth's oceans contained significantly more water than they do today. A new study indicates that hydrogen from split water molecules has escaped into space.

Interestingly we are creating lots more water on earth - all the oil we burn has water as an exhaust, which adds to the amount of water on earth. I would suspect it's an insignificant amount, except the CO2 isn't, so maybe it's more than I expect.

Tangentially related, go watch a Delta IV launch. The RS-68 burns hydrogen, therefore the exhaust plume is literally water.

The space shuttle orbiters also burned hydrogen, but the SRBs burned aluminum. I used to enjoy pointing out the difference in their plumes, which is very clear to see as the orbiter's plume is invisible whereas the SRBs are distinctly orange.

Re: Five things we still don’t know about water

#69

Post by asdff »

ars wrote: post #55
amelius wrote: post #35

Also interesting: https://sciencenordic.com/chemistry-climate-denmark/the-eart... > The Earth has lost a quarter of its water > In its early history, the Earth's oceans contained significantly more water than they do today. A new study indicates that hydrogen from split water molecules has escaped into space.

Interestingly we are creating lots more water on earth - all the oil we burn has water as an exhaust, which adds to the amount of water on earth. I would suspect it's an insignificant amount, except the CO2 isn't, so maybe it's more than I expect.

We aren't creating water out of nothing though
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