Friday, 30 September 2022
Tuesday, 27 September 2022
Thursday, 22 September 2022
Tuesday, 20 September 2022
CNN's Don Lemon 'schooled' by UK scholar after demanding King Charles III pay 'reparations'
Friday, 9 September 2022
Queen Elizabeth II 1926-2022
A tribute to The Queen written by Claire Lenman the founding editor of Quillette.
-Drifter
During World War II, Princess Elizabeth rolled up her sleeves
and learned how to fix a car. She had enrolled in the Auxiliary Territorial
Service and trained as a driver and mechanic for the British army. She was
appointed an honorary junior commander at just 19 years of age.
While she remained stationed in Britain, this practical
training, and her attitude of pitching in at a time of national need,
transformed into a lifelong fulfilment of duty to her country. Despite all the
pomp and ceremony, and underneath all of her regalia, she always remained in
spirit a humble servant for the national cause.
Her service lasted seven decades.
Seven years longer than Queen Victoria, the second longest reign of a monarch.
There's not much I can say about
Queen Elizabeth that has not already been said. The obituaries published around
the world today provide a rich and detailed history documenting her
contributions over nine decades of life and seven decades of reign.
Her death represents the loss of a
generation, a set of values, and a way of life. Queen Elizabeth II reigned
during a period of remarkable stability and peace, but also during a time in
which duty and self-sacrifice were considered the highest of virtues. Her
dedication to her role, and her example of selfless action encapsulate ideals
that were unique to her formative years, and that are now, for the most part,
fading away.
We do not have to be British to
admire the Queen's dutiful service to her country. We do not have to be
monarchists to appreciate her beneficent rule. And we do not have to be
conservative to recognise that her lifetime of service is worthy of the deepest
respect and admiration.
Queen Elizabeth II is admired for
many things, one of them being her courage.There is, perhaps, no greater
example of leaning in than that of the Queen, thrust into
immortal responsibility, the weight of a nation, and empire on her shoulders at
age 25. She showed us all what leadership and dedication truly is.
Saturday, 3 September 2022
THOT's Gangbanger's Ball
Imma need a new intro. MEH. Imma need all kitties!
If you don't turn that up. You'll never live it down.
-THOT. and Hangry Kittie......LOL. xoxox.
Thursday, 1 September 2022
Are Wormholes a Dead End for Faster-Than-Light Travel?
This article
is from Paul Sutter, an astrophysicist at The Ohio State University. It will
not come as good news for science fiction fans and screenwriters but I found it to be a good read. Enjoy!
-Drifter
Ah, wormholes. The intergalactic shortcut. A tunnel through
space-time that allows intrepid travelers to hop from star system to star
system without ever coming close to the speed of light.
Wormholes
are a workhorse of sci-fi interstellar civilizations in books and on the screen
because they solve the annoying problem of "Well, if we stuck to known
physics, 99.99999 percent of the story would be as fascinating as watching
people sleep."
But
could we do it? Could we actually warp and bend space-time to make a convenient
tunnel, making all of our galactic dreams come true?
Short
answer: not likely.
Long
answer: Well, keep reading.
BEWARE THE WHITE HOLE
The concept of wormholes got its start when physicist Ludwig
Flamm, and later Albert Einstein and Nathan Rosen, realized that black holes
can be "extended." When one goes about solving the fantastically
complicated equations of general relativity, the machinery that
predicts a black hole also predicts a phenomenon called a white hole. A white
hole is pretty much what you think: Whereas a black hole's event horizon marks
a region of space that once you enter you can't leave, it's impossible to enter a
white hole's horizon, although anything already in there can escape.
That
same mathematical machinery delivers a bonus, too: All black holes would be
naturally "connected" to white holes via their singularities, making
a tunnel through space. Woohoo, wormholes here we go!
Or not.
While we have gobs of evidence for the existence of black holes, white holes
appear to be mathematical fiction. There's no known process in our universe
that would actually form them, and even if they did pop into existence, their
natural extreme instability would snuff them right out again
Oh,
yeah, and the mechanism for making black holes the collapse of massive
stars—also
automatically prevents the formation of a symbiotic white hole.
And
even if they did form (and they don't), the extreme gravity of the mutual
singularities would cause the wormhole tunnel to immediately stretch and snap
much more quickly than anything could cross it.
DEATH BY WORMHOLE
But
that doesn't stop anybody from playing a fun game of "what if." What
if white holes could naturally form, or be constructed? What if we could
stabilize them? What if we could attach a white hole's singularity to a black
hole and make a wormhole? What if? What if? What if?
Well, for one thing, traveling down such a wormhole would
really, really suck. Literally. The entrance to the wormhole—the
"throat"—sits inside the event horizon of the black
hole.
That's
a problem.
The very definition of an event horizon—their very cosmique raison
d'etre — is that once you enter them, you don't get to come out. No
way, no how. It doesn't matter if there's a wormhole tunnel inside it—you don't
get to leave.
Inside
a black hole event horizon, you have only one destination: singularity town,
the place of infinite density and soul-crushing gravitational forces.
So
let's say you enter a wormhole. You can watch light from another patch of the
universe filter in from the opposite side. If someone else jumps in, you can
meet them and have some tea together. And you can die—miserably—as you careen
into the singularity.
POSITIVELY NEGATIVE
Is
there any way to make a working, even fun, wormhole, instead of a terrifying
portal to inevitable destruction?
Surprisingly,
yes. Well, not quite 100 percent absolutely "this is a normal part of our
universe" yes. More like "if we play pretend" yes.
To
construct a traversable wormhole, you need to overcome two important obstacles.
First, the entrance to the wormhole has to actually sit outside the event
horizon. That would allow you to enter the wormhole and blast through it to
your faraway destination without fearing a "singular" encounter.
Second,
the tunnel itself has to be stable and strong. It has to withstand the extreme
gravity of the singularities and resist tearing apart when something flies down
its length.
There
is indeed a material that solves both problems. But that material has a problem
all its own: It has negative mass.
That's
right: mass, but negative. A ring of negative-mass material could be used to
construct a fully functional and useful wormhole. Since the exotic nature of
negative mass warps spacetime in a unique way, it "inflates" the
entrance to the wormhole outside the boundary of the event horizon, and stabilizes
the throat of the wormhole against instabilities. It’s not an intuitive result
but the math checks out.
But
could such a substance exist? We've mapped out a good chunk of the universe,
and we've never seen negative mass. If it did exist, it would have some pretty
weird properties. For example, following the math of Newton’s Laws with some
minus signs tossed in, we find that a negative-mass particle would push on a
positive-mass particle, while the positive-mass particle would pull on the
negative-mass one. Set two opposite-mass particles next to each other,
perfectly still, and the pair would start accelerating, zooming off without any
input of force.
That seems
like that might violate some sort of rule.
What about the Casimir effect, the odd and fascinating
attraction of two metal plates due to vacuum energy? That’s often trotted out
as an example of the universe behaving badly, and a possible route to negative
mass. But the Casimir force is characterized by local negative pressure (it
pulls rather than pushes), not negative mass.Sure, we don't know everything
there is to know about quantum gravity and the nature of space-time at super-duper-teensy
scales. Could an advanced civilization discover the path to negative mass and
manipulate gravity in just the right way? Would a breakthrough in physics point
a way to fashioning wormholes?
Honestly, probably not. There are
just too many things working against them. Working wormholes would violate so
many aspects about known (and extremely well tested) physics that I think it's
better to just work on other problems.
I know some people might accuse me
of not being creative enough, but the universe doesn't care about our
creativity. The tools of science are harsh but fair judges; if an idea doesn't
work, it simply doesn't work. There are many varied and beautiful mysteries in
our universe, and we certainly haven't unlocked all of the inner workings of
the cosmos. But wormholes probably aren't one of them.
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