Counterintuitive Facts

[renormalised (Carl)]

And yet he comes out and publishes a paper like this...

"Characteristics for the Occurrence of a High-Current, Z-Pinch Aurora as Recorded in Antiquity"

I think the conclusions of this paper fairly and squarely put him in the EU nut category without a shade of doubt. Even if LANL or he, himself, doesn't think so.

The archaeologists (apart from others) would be having fits of laughter if they ever read that paper

[CraigS]

Problem there is … what is EU ?
… I don't think even they know ..


Cheers

[renormalised (Carl)]

Originally Posted by CraigS

Problem there is … what is EU ?
… I don't think even they know ..


Cheers

A very good point

Which is also counterintuitive because you'd think they would know

[CraigS]

Originally Posted by renormalised

A very good point

Which is also counterintuitive because you'd think they would know

.. boom .. boom …


Can't argue with that one !!


Cheers

[renormalised (Carl)]

Originally Posted by CraigS

.. boom .. boom …


Can't argue with that one !!


Cheers

They would. But, hey, what would you expect

[Brian W (Brian)]

with absolutely no attempt at humour or modesty this thread has shown me just how much education I am lacking.

And an honest thanks for taking the time to occasionally dumb things down so I can begin to understand things.
Brian

[CraigS]

Originally Posted by Brian W

with absolutely no attempt at humour or modesty this thread has shown me just how much education I am lacking.

And an honest thanks for taking the time to occasionally dumb things down so I can begin to understand things.
Brian

Gee Brian;

1/3 and 3 x 1/3 isn't all that hard.





Cheers

[ballaratdragons (Ken)]

Originally Posted by OICURMT

Could you supply a reference for this? I'm struggling to figure this out, as the partial pressure of H2O under a vacuum at body temperature would result in boiling...


I could surmise that the body itself must be under pressure due to "containment" by the epidermis... but don't know if that would be enough.

Here's a few links. There are lots of them.

http://ntrs.nasa.gov/archive/nasa/ca...1965027167.pdf

http://www.geoffreylandis.com/vacuum.html

http://imagine.gsfc.nasa.gov/docs/as...rs/970603.html

http://www.accessplanetary.com/space...t-a-space-suit

http://space.about.com/cs/basics/a/bodyvacuum1.htm

etc
etc

[bojan]

Originally Posted by CraigS

Problem there is … what is EU ?
… I don't think even they know ..


Cheers

EU stands for European Union

[CraigS]

Originally Posted by bojan

EU stands for European Union

Doh !! Of course !!

… sheer genius, I tell ya, sheer genius !!



Cheers

[renormalised (Carl)]

Originally Posted by bojan

EU stands for European Union

They don't even know what they're on about, either

[OICURMT]

Originally Posted by ballaratdragons

Here's a few links. There are lots of them.

<snip>

etc
etc

Too cool... thanks.

Originally Posted by Interesting read...

During this time, water vapor will form rapidly in the soft tissues and somewhat less rapidly in the venous blood. This evolution of water vapor will cause marked swelling of the body to perhaps twice its normal volume unless it is restrained by a pressure suit.

Now I have a valid reason for getting fat... must be the vacuum in my head

[sjastro]

Originally Posted by OneOfOne

I recall seeing something like this on "Why is it so?". They had a series of clear tubes finishing at a lower point to one side, each with a ball inside, one straight, one cycloid, one parabolic. All three balls were dropped simultaneously, with the one in the cycloid finishing first. Do we have a dilemma? Loved that show!

Another interesting property of a cycloid is that if the object is released from any point on the cycloid it will take the same time to reach the bottom.

Regards

Steven

[avandonk]

Nearly all of science is counterintuitive. It has taken thousands of years by many very smart people to work this out.

You only have to look at some of the ancient Greek 'laws' of science.

For a constant velocity a constant force needs to be applied.

Experimental proof. When the force is removed the object stops.
There was an anomaly with arrows, spears and rocks. But it was proposed that force supplied by the air from the thrower kept the object in flight.
Sound familiar as a fudge factor?

There were four elements whose correct place was earth at the lowest point then water, air and fire. It was evil that kept misplacing these elements.

Experimental proof.
Earth sank in water. Air rises in water. Fire rises in air. And all the other combinations.

The Sun, Moon, Wanderers (planets) and stars go around the earth.
Experimental proof.
Go outside and look at the sky. It is exceedingly obvious!

I could go on for a very long time, but I am sure you could come up with your own version.

Bert

[CraigS]

Thanks Bert … cool … our paradigms of understanding (which change over time), are an an essential part of our intuitiveness.

Here's another interesting one .. The Archer's Paradox (done a bit of this in my past, so I can confirm the validity of it from first hand experience ..)

In order to strike the center of the target, an the arrow shot from a bow, must be pointed slightly to the side of the target.

The stiffness of the arrow determines whether (or not) it clears the bow (without striking it on the way out).

Here's why … its like a lump of wet spaghetti … (I never tire of watching hi-speed video of this .. amazing !)

Cheers

[avandonk]

You totally missed my comment on fudge factors Craig. If ancient Greeks needed to invoke some sort of mythical air propulsion against their known theory of mechanics it only showed they did not have a fully developed theory.

We find ourselves in the same conundrum with dark energy and dark matter.

I still think it is all the quantum entanglements that are still linking all possible particle interactions for all time!

Bert

[Screwdriverone (Chris)]

Just thought of one, not sure if it qualifies......

If you lose something and go looking for it in multiple places and then find what you were looking for, it will ALWAYS be in the LAST place you look. Even if you find it in the FIRST place you looked, it will ALWAYS be the LAST place you looked for it....

??? (don't hurt me)

Cheers

Chris

[CraigS]

Originally Posted by Screwdriverone

Just thought of one, not sure if it qualifies......

If you lose something and go looking for it in multiple places and then find what you were looking for, it will ALWAYS be in the LAST place you look. Even if you find it in the FIRST place you looked, it will ALWAYS be the LAST place you looked for it....

??? (don't hurt me)

Well Chris;
I suppose even Irish Logic is counterintuitive …

Cheers
PS: No disrespect to any Irish Logicians out there !!

[mjc (Mark)]

Originally Posted by CraigS

Well Chris;
I suppose even Irish Logic is counterintuitive …

Cheers
PS: No disrespect to any Irish Logicians out there !!

Or very intuitive - but counter expected logic-

A tourist in a village outside of Dublin asks a local, "What's the best way to get to Cork?"

Local: "Well that depends - are you on foot or do you have a car?"

Tourist: " I have a car"

Local: "Well, that's the best way!"

Mark C (living in suburbs of Dublin)

[Robh (Rob)]

Hi Craig and all,

For counter-intuitive, you can't go past this one from the mathematicians.
It is possible to take a solid sphere S and divide it up into a finite number of pieces and then reassemble them (using only translations and rotations) into two identical copies of the original sphere. This is known as the Banach-Tarski Paradox.
In fact, ignoring the original sphere's centre, it can be divided into precisely 4 pieces S1/S2/S3/S4 that can be re-assembled into two spheres S1+S2 and S3+S4 each of the same volume as the original.

A more impressive statement of the theorem says that it is possible to take a solid sphere the size of a pea and divide it into a finite number of pieces that can be reassembled into a sphere the size of the Sun.

Regards, Rob.