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3/17/2022 5:09 am  #126


Re: Today I Learned....

]

xoxoxoBruce wrote:

It'll take a few days to get to you anyway, then wipe the torch with alcohol and give the packaging to your worst enemy.

If the courier gent turns up wearing full Hazmat gear I shall take your advice!

Perhaps more worrying is the fact that the first promotional Email I received after placing the order included this...




 

 

3/17/2022 5:57 am  #127


Re: Today I Learned....

Don't leave home without it. yikes!


If you would only recognize that life is hard, things would be so much easier for you. - Louis Brandeis
 

3/17/2022 9:21 am  #128


Re: Today I Learned....

Liberal thinking from Hong Kong leaked out into Shenzhen.  China is trying to stop the spreading of that disease.
 

 

3/18/2022 11:38 pm  #129


Re: Today I Learned....

quick, send them trump
 


The most difficult thing is the decision to act, the rest is merely tenacity  Amelia Earhart
     Thread Starter
 

3/19/2022 11:44 am  #130


Re: Today I Learned....

China's not an ally, but they don't deserve that.


 _______________
|_______________| We live in the nick of times.
|  Len 17, Wid 3      |
|_______________|[pics]
 

3/20/2022 10:29 am  #131


Re: Today I Learned....

He'd talk them into invading Taiwan.


 Freedom is just another word for nothin' left to lose.
 
 

6/20/2022 5:00 pm  #132


Re: Today I Learned....

The word 'window' comes from Old Norse and means 'wind eye'

 

6/21/2022 6:04 am  #133


Re: Today I Learned....

That actually make a lot of sense.


If you would only recognize that life is hard, things would be so much easier for you. - Louis Brandeis
 

6/21/2022 9:13 am  #134


Re: Today I Learned....

It's amazing to me that a word as prosaic as window has such a poetic origin

 

6/22/2022 5:42 am  #135


Re: Today I Learned....

When I was a kid the old-timers around here used to say wind-er. That feels like they were touching the origin.


If you would only recognize that life is hard, things would be so much easier for you. - Louis Brandeis
 

7/02/2022 11:41 pm  #136


Re: Today I Learned....

Yes winder it is, or was.


 Freedom is just another word for nothin' left to lose.
 
 

7/19/2022 6:21 am  #137


Re: Today I Learned....


If you would only recognize that life is hard, things would be so much easier for you. - Louis Brandeis
 

7/19/2022 11:20 am  #138


Re: Today I Learned....

Curtain? Nope, not even net. Guy wires, guy ropes, and a host of other terms for an idea that's been around forever.
I guess using carbon fiber is stronger, although maybe overkill, but makes better headlines.
Those cables are compressing the entire structure so any movement will be the same throughout, but by the same token any failure in the structure creates a house of cards.
Pat Finn's statement, "Although carbon fiber is best known for its use in furniture design...”, tells me he/she doesn’t know jack shit about carbon fiber or materials.
 


 Freedom is just another word for nothin' left to lose.
 
 

7/19/2022 3:34 pm  #139


Re: Today I Learned....

What is not seen is most critical.  How are those ropes earthed?  If not structurally connected to the buildings foundation (in a manner that all move together), then those ropes could simply become whips to lash at and destroy that structure.

Critical is that the entire structure (including ropes) most together in a coordinated manner.  The most critical component of that solution (the entire foundation is coordinated) is ignored when not observed.

Those ropes appear too far from the rest of that foundation to become a coordinated solution.

Interesting new idea though.  Raises plenty of questions.
 

Last edited by tw (7/19/2022 3:35 pm)

 

8/08/2022 8:49 pm  #140


Re: Today I Learned....

TIL Camels do not mate standing up


The most difficult thing is the decision to act, the rest is merely tenacity  Amelia Earhart
     Thread Starter
 

8/09/2022 6:47 am  #141


Re: Today I Learned....

monster wrote:

TIL Camels do not mate standing up

 
As a consequence they become somewhat ill tempered.
Hence the expression 'getting the hump'.

 

10/11/2022 6:56 pm  #142


Re: Today I Learned....

TIL the Spanish for movie is....


película!   

also that enjoy is disfruta.  So I hope you defruit your vampire pelicans if you happen to visit the cinema this week!


The most difficult thing is the decision to act, the rest is merely tenacity  Amelia Earhart
     Thread Starter
 

12/30/2022 9:04 am  #143


Re: Today I Learned....

TIL : If the Earth was 50% bigger our rocket tech would be completely useless and we'd be trapped here unable to shoot assholes into space.

If the radius of our planet were larger, there could be a point at which an Earth escaping rocket could not be built. Let us assume that building a rocket at 96% propellant (4% rocket), currently the limit for just the Shuttle External Tank, is the practical limit for launch vehicle engineering. Let us also choose hydrogen-oxygen, the most energetic chemical propellant known and currently capable of use in a human rated rocket engine. By plugging these numbers into the rocket equation, we can transform the calculated escape velocity into its equivalent planetary radius. That radius would be about 9680 kilometers (Earth is 6670 km). If our planet was 50% larger in diameter, we would not be able to venture into space, at least using rockets for transport.

https://www.nasa.gov/mission_pages/station/expeditions/expedition30/tryanny.html
 


If you would only recognize that life is hard, things would be so much easier for you. - Louis Brandeis
 

12/30/2022 10:48 am  #144


Re: Today I Learned....

So... doesn't that mean we also can't explore planets that large, because you could never get back off planet again? Like imagine we discover a giant world, teeming with civilization, we can pick up their TV signals from orbit, we know everything about them, we can even send signals to let them know we're there, but we can never land and actually introduce ourselves.

 

12/30/2022 12:54 pm  #145


Re: Today I Learned....

That would be a bit frustrating. I would assume we could build a space elevator from orbit down though, giving them a boost into the universe.


If you would only recognize that life is hard, things would be so much easier for you. - Louis Brandeis
 

12/30/2022 1:04 pm  #146


Re: Today I Learned....

You can find comparable weights on other planets/moons, but I can't find how much more things would weigh on an Earth 50% larger in diameter.
Gimme an answer or where to look.

 

1/01/2023 11:31 am  #147


Re: Today I Learned....

That's assuming a proportional increase in gravity to an Earth 50% bigger which ain't necessarily so.


 Freedom is just another word for nothin' left to lose.
 
 

1/01/2023 12:31 pm  #148


Re: Today I Learned....

But I think it is.  Relative to Earth, all three rocks:
Venus: ,95 radius, .85 volume, .83 mass, .9 gravity.
Mars: .54 radius, .15 volume, .11 mass, .38 gravity.

 

1/01/2023 3:16 pm  #149


Re: Today I Learned....

Here's how to calculate gravity. The short version is you need to know your imaginary planet's mass and radius. If you're saying it has 50% more mass than Earth, then you still have to decide on the radius (because it could be more or less dense, resulting in different sizes.) If you're saying its radius is 50% bigger, then you have to decide on what you're pretending the mass is, for the same reasons.

If you want to assume the density is the same as Earth, then the mass and radius can't both be 50% bigger, because the mass is being distributed 3 dimensionally around an ever-larger sphere, so the radius will be increasing less and less with each "layer" of mass you add.

 

1/02/2023 1:24 pm  #150


Re: Today I Learned....

When I said "Gimme an answer or where to look." I should have just said Give me the answer.
First, the original statement uses variously "50% bigger," "50% larger radius" and "50% larger diameter."
Assuming the new material is the same as the original, then the mass will be varyingly increased by large amounts.
If mass is the determinator of gravity, then the weight of objects on the surface should be increased.
I ask again:  By how much?  Three possibilities, I guess (four with Bruce's input).
100 lbs. = 150 lbs.?

Last edited by Diaphone Jim (1/02/2023 1:25 pm)

 

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