Global Warming or Over Population - Earths Biggest Threat?

jason1976

jason1976

Well-Known Member
ever see how much stuff they find under water? cities that are still erect,statues,ect. they didn't build them under water. thus the water must have been rising for quite some time in my opinion. however overpopulation is taking its toll one rescources we need to survive, food, water, air, ect. thus it has to be worse. I think the earth will heal itself when we try to overpower nature it usually ends bad.dinousaurs ,cavemen,ect.
 
Pinworm

Pinworm

Well-Known Member
jason1976 said:
ever see how much stuff they find under water? cities that are still erect,statues,ect. they didn't build them under water. thus the water must have been rising for quite some time in my opinion. however overpopulation is taking its toll one rescources we need to survive, food, water, air, ect. thus it has to be worse. I think the earth will heal itself when we try to overpower nature it usually ends bad.dinousaurs ,cavemen,ect.
Click to expand...
He said erect.
 
Doer

Doer

Well-Known Member
I wonder how well Orion could work from a standing start. I did see something about propulsion the other day, and fusion version of Orion is possible, if we could get fusion. The design has pellets firing into the laser focus, like they do now out at LLL.

And we have a material for a Lunar Elevator. Spectra could work. And there is a Company designing one. You could get an elevator out to the inner La Grange, L1, from the moon. A stable place if the station mass is allowed to orbit the point somewhat. That would be 36,000 miles.

I really think tethers, a cousin of the captive cable... pinwheels, actually, are the best way to climb this dratted gravity well long term. And they can generate massive electrical power as they swing through the magnetic fields, as well as large, delta V.

The first step can be done with Spectra, just a capture and sling. But, when it gets to the material science, point where that goes to all the way to the Earth, the Station will capture and guide the end connector in a giant, concrete structure for many miles, as cargo is first un-hooked and decelerated, while other containers are being accelerated and hooked on.

What could possibly go wrong? I wonder what the Specific Impulse equivalent would be?



 
W

Wilksey

Well-Known Member
SnapsProvolone said:
It could be said that one is merely a symptom of the other...
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Pretty much.

The planet is going to do what it's going to do, whether we like it or not. The geological record shows a series of hot / cold periods throughout the history of this rock, both with, and without the presence of dumb ass humans.

I support pursuing alternative energy sources, however, it's got to be cost effective as well as "clean", or people will simply continue to use "cheap" fossil fuels and stink the place up.
 
Pinworm

Pinworm

Well-Known Member
Wilksey said:
Pretty much.

The planet is going to do what it's going to do, whether we like it or not. The geological record shows a series of hot / cold periods throughout the history of this rock, both with, and without the presence of dumb ass humans.

I support pursuing alternative energy sources, however, it's got to be cost effective as well as "clean", or people will simply continue to use "cheap" fossil fuels and stink the place up.
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How very pragmatic. <3
 
Pinworm

Pinworm

Well-Known Member
Doer said:
Ah, the MET, I knew it had to have some special name. Pinwheel, is rather overloaded as a term.

http://en.wikipedia.org/wiki/Momentum_exchange_tether

And specifically the Rotorvator variant can reduce the tip speed to near Zero at the Surface.
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You're shit is clever, boyo. I'm fits to share this 40oz witchu. But, we got some niggas to ride on, we need to split on one hell of a lick for that skritch. So, be hush, and we'll dive on that one cunt with that purse. Goal chased.
 
heckler73

heckler73

Well-Known Member
cannabineer said:
The space elevator has two big problems.
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Is that all?

The second has to do with powering the putative trolley cars. How transmit the power,and from what source? Solar is currently popular, but its energy density is pretty low, and the transducers (solar cells) are heavy and expensive. I would prefer a more compact and energetic source ... perhaps some form of fusion when we get good enough.
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Maxwell's equations have the answer...but also another problem.
Sticking some grounded conductor out at such an orbit would generate charge (thanks to the varying magnetic field of the Earth as it rotates in relation to the Sun's).
That charge could be harnessed for power. How much would be generated? I have no idea...and I have no impetus to bother manipulating the equations, either.
But at the same time, this creates other problems as the current may create electric forces that would cause extra strain on the cable itself, never mind all of the random lightning/plasma discharges that would probably result.
Regardless, the idea is half-baked (or maybe really baked) and best left to Sci-Fi novelists high on Hawaiian Sativas, sitting in their Sri Lankan HQs.
We probably have a better chance of developing EM propulsion (which is close to zero)...

Practically, there is one way to move tonnage into space. Anyone remember Orion (not the spiffed-up Apollo capsule, but the original)? Nuclear pulse propulsion with an Isp in the tens of thousands.

Click to expand...
I do remember that...I haven't heard anyone seriously discuss it, though, in over 20 years. What happened to the research?
 
abandonconflict

abandonconflict

Well-Known Member
I would not say that overpopulation is a threat but there are definitely too many ass holes on planet Earth. We grow enough grain to feed 11 billion people and feed it to live stock. Much of said grain is grown where natural habitat has been cleared. So it is just unsustainable, but not necessarily a result of overpopulation. Malthus was wrong.

As for climate change, I'm of the opinion that the balance has been tipped. There is a natural swing like the scale of justice with a weight dropped on a side causing greater swing, humanity is the weight. We didn't cause the swing, we simply accentuate it and find ourselves at its mercy.

Both problems are results of the abundance of ass holes. The solution is cooperation. A paradigm shift from competition to cooperation is demanded.
 
Doer

Doer

Well-Known Member
All Space Elevators, designs, I have seen, have to be actively managed. They must be maintained in the natural frequency.
All sorts of forces, at play.

BTW, The equation for the fundamental frequency of an ideal taut string is:
f = (1/2L)*&#8730;(T/&#956;)
​
where

  • f is the frequency in hertz (Hz) or cycles per second
  • T is the string tension in gm-cm/s²
  • L is the length of the string in centimeters (cm)
  • &#956; is the linear density or mass per unit length of the string in gm/cm
  • &#8730;(T/&#956;) is the square root of T divided by &#956; in seconds


(Merry Christmas, Heck, I know you love the math)

And the harmonics must be used to dodge debris, satellites, and incoming in Anger.

Hey, I want to be a Space Cowboy. A Tether Tuner. :)
Hmmmmm..........

Monsanto is firing again, Sir!

Solution, TT!!

Looks like Eb, Sir!

Make it so!
 
NLXSK1

NLXSK1

Well-Known Member
abandonconflict said:
I would not say that overpopulation is a threat but there are definitely too many ass holes on planet Earth. We grow enough grain to feed 11 billion people and feed it to live stock. Much of said grain is grown where natural habitat has been cleared. So it is just unsustainable, but not necessarily a result of overpopulation. Malthus was wrong.

As for climate change, I'm of the opinion that the balance has been tipped. There is a natural swing like the scale of justice with a weight dropped on a side causing greater swing, humanity is the weight. We didn't cause the swing, we simply accentuate it and find ourselves at its mercy.

Both problems are results of the abundance of ass holes. The solution is cooperation. A paradigm shift from competition to cooperation is demanded.
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There is no such thing as natural habitat. The habitat fluctuates due to the changes of the earth..

And grain is natural.

You have been brainwashed as well....
 
B

bongbrain

Member
heres an idea build a bigger space station and let the rich have their area and if you want better in life there you go. over population or people who dont no how to not fuck. its simple.yes poor are the reason for a population boom. im depressed i want to make happy woopy, cant afford condoms or birth control. poor people just love making others poor. when someone gets theres the poor are like crackheads and try to steal or knock the person far enough down they are poor again.
 
heckler73

heckler73

Well-Known Member
Doer said:
All Space Elevators, designs, I have seen, have to be actively managed. They must be maintained in the natural frequency.
All sorts of forces, at play.

BTW, The equation for the fundamental frequency of an ideal taut string is:
f = (1/2L)*&#8730;(T/&#956;)
​
where

  • f is the frequency in hertz (Hz) or cycles per second
  • T is the string tension in gm-cm/s²
  • L is the length of the string in centimeters (cm)
  • &#956; is the linear density or mass per unit length of the string in gm/cm
  • &#8730;(T/&#956;) is the square root of T divided by &#956; in seconds


(Merry Christmas, Heck, I know you love the math)
Click to expand...
:lol: I was just scribbling a solution to Pin's Schrodinger equation (for review)...and yes, I believe that is correct for a stretched string.
Although, I'm used to seeing that in radians/sec (i.e. &#969;[sub]n[/sub] )
Good grief... now you're making me want to whip Tony French's text.



Yup!
Now for the quiz:
The E-string of a violin is to be tuned to a frequency of 640Hz. Its length and mass (from the bridge to the end) are 33cm and 0.125g respectively. What tension is required?
 
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