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Videos (224) | Sift Talk (6) | Blogs (28) | Comments (757) |
Videos (224) | Sift Talk (6) | Blogs (28) | Comments (757) |
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Building a Fish Tower in a pond
The question I always have when I see these is do the fish really like it, or does the change in pressure on the water under vacuum affect their swim bladders so they get too buoyant and get a bit stuck inside it?
3D Printing Stainless Steel with Giant Robot Arms
There has to be a downside to weld-additive construction. They'd have to do this in a vacuum or inert gas filled chamber to avoid oxidisation between layers.
I know you can't weld aluminium like this. Aluminium Oxide has a much higher melting point than aluminium, which is the main point of failure with aluminium welding.
Mordhaus (Member Profile)
Your video, Never Vacuum Gas, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.
Thunderf00t BUSTS the Hyperloop concept
I thought the same thing, because that's everything I had heard prior - "it's not a vacuum". But both the white paper, and the wikipedia article on it (https://en.wikipedia.org/wiki/Hyperloop ) both mention 1 millibar of pressure, and that was the number that he was debunking with the math in the video (and the 2nd one I linked in the description)
of course, it's possible that the Hyperloop folks changed that pressure target number somewhere between then and now, and it's running in much less of a vacuum, which would be less efficient, but way safer (if so, they should update the public).
It's not IN a vacuum. the pressure is just very low, like a high-altitude jet airliner. The skis the pod runs on aren't even electromagnetic, they use micro jets of compressed air, like an air-hockey table.
As for Thunderfoot, I get he likes debunking things like those retarded snake-oil "smart pavement" people. However, saying Musk is one of them is ignoring what Elon's already accomplished. I can GUARANTEE Elon Musk has dumped more money than Thunderfoot will make in his lifetime in engineers and pure scientists just to see if it was FEASIBLE, let alone possible.
Thunderf00t BUSTS the Hyperloop concept
It's not IN a vacuum. the pressure is just very low, like a high-altitude jet airliner. The skis the pod runs on aren't even electromagnetic, they use micro jets of compressed air, like an air-hockey table.
As for Thunderfoot, I get he likes debunking things like those retarded snake-oil "smart pavement" people. However, saying Musk is one of them is ignoring what Elon's already accomplished. I can GUARANTEE Elon Musk has dumped more money than Thunderfoot will make in his lifetime in engineers and pure scientists just to see if it was FEASIBLE, let alone possible.
Using a trubine in a vacuum doesnt make any sense. I thought it was magnetically driven like the bullet train.
Thunderf00t BUSTS the Hyperloop concept
Using a trubine in a vacuum doesnt make any sense. I thought it was magnetically driven like the bullet train.
Thunderf00t BUSTS the Hyperloop concept
and another video about the vacuum failure demo he set up:
https://youtu.be/YIVJvpNyjdc
Dust Buddies
We just got rid of these guys recently with vacuum cleaners, clothes, wipes, etc. They will be back soon. Oh, and mites!
the true face of gender equality
I didn't enjoy the video, i didn't see it as a triumph of common sense or reason. I also didn't enjoy the flippant criticism as though this was specifically an attack on feminism by @enoch who never has anything good to say about feminism - which is patently bullshit and follows on from the simplistic line of thinking "feminism good, anti-feminism bad".
Criticism of feminism/civil rights/anything is valid and important. In the same way as Fathers For Justice must guard against a minority of members that are misogynistic, so must feminism guard against a minority of members that are misandrist. Why? Because these people turn non-members against you - being able to criticise your cause is one of the healthiest ways to grow it. Ad hominem attacks are no better than chauvinism and i would hope that my fellow feminists would agree with that.
What i did enjoy was @Januari 's comment which was critical of the point without being critical of the person and perfectly summed up the reasons why a decent person *should* dislike this video, in a vacuum.
WTF is Heterosexual Pride?!
I agree with this. It's very important that people come together to fight for equality or whatever else they believe is right, but a movement has got to be self aware and self critical otherwise it will end up undermining itself.
Movements that become huge can have little groups forming within them and the outside world sees the actions of what might be an extreme faction for the actions of the whole. And things can become insular, where the members mostly talk to each other and reconfirm each other's worries and problems and things that weren't acceptable to you in a vacuum are ok because it seems like those problems are dominating yours and your friends' entire lives.
But that works regardless of the politics of the movement - from the left or right. So on the one hand you get die-hard gender rights campaigners using inherently sexist terms when arguing with the opposite sex, but you also get kind, considerate people rallying behind a right wing group or message because it starts with phrases like "we've got to look after our own first," but end up with racism and bigotry.
We are reaching so far with 'protecting' minorities from intolerance that our movements themselves have become intolerant.
[...]
When the push goes so far as to declare that dissenting opinions are in and of themselves oppression, then we necessarily lose fundamental freedoms.
[...]
It doesn't matter if it's your religious belief, safe space, or social cause, if you class disagreement as fundamentally wrong you are part of the problem.
Hyperloop Prototype: First Successful Test Run
I believe it's going to be both, as implied by the [very brief] animation. It'll be a mag-lev train contained within a pneumatic vacuum tube or whatevs.
It's a maglev monorail? I thought this was going to use pneumatic tubes and stuff. I'm all for high speed rail, but I'm much more for Jetsons-style wooshy tube transportation.
Judge Recognizes Burglary Suspect as her Childhood Classmate
There's a difference between oppression and privilege. As a straight white male you start with advantages over other people. These aren't advantages of talent or intelligence, they're purely socially constructed for no good reason other than one group hoarding power and influence for centuries.
It's perfectly natural, but that doesn't make it right.
Individuals aren't responsible for the social fabric, but people should at least acknowledge their place in the scheme of things.
Also, I think it's important to note that 99.9% of whites deserve equal or more than what they currently have. The system is wildly skewed by the ultra-rich vacuuming up a massive share of wealth and influence. It's just that we deserve to live somewhat better, whereas many minorities deserve far better treatment than they've had historically and continue to have.
Does the sexism factor cancel it out, what with the female being the judge and all?
It'd be nice if straight white cis males weren't guilty at birth of oppressing everybody else...
eric3579 (Member Profile)
"Saudi Arabia has told the Obama administration and members of Congress that it will sell off hundreds of billions of dollars’ worth of American assets held by the kingdom if Congress passes a bill that would allow the Saudi government to be held responsible in American courts for any role in the Sept. 11, 2001, attacks."
Source: http://www.nytimes.com/2016/04/16/world/middleeast/saudi-arabia-warns-ofeconomic-fallout-if-congress-passes-9-11-bill.html
That's an interesting threat, if true. US treasury securities are the safest asset there is, and given the ginormous shortage of AAA assets worldwide, those would be vacuumed up in a split-second. Hell of a threat, really.
Gravitational Waves Jam
And I know they could be testing me
The data might be wrong
A preplanned concocted recipe
And played up all along
But at least my graphs are beautiful
With sigma 5.1
This I know
This I know
They told me don't worry about it
Analyze the chirp and
No more
They told me be careful
And doubt it
But I've seen a merger
Of black hole-ole-ole-oles!
LIGO feels when space is rippling through
With a wave of
Gravitation
LIGO feels when space is rippling due
To a tensor
Perturbation
Vacuum sealed interferometer
An L 5-mile long
Split a laser, bounce 300 times
Compare the distance gone
One built in Louisiana and one more in Washington
That's LIGO
Yeah LIGO
A Billion lightyear journey
To cover
Then it hit the Fabry-Perot
Lengthening one leg then
The other
Making fringes dance on
The dio- o- o- ode!
LIGO feels when space is rippling through
With a wave of
Gravitation
LIGO feels when space is rippling due
To a tensor
Perturbation
LIGO feels that space is rippling through
From an ancient
Amalgamation
LIGO feels that space because it's crew
Gave it seismic
Isolation
This event's power is
Enormous
Fifty universes
Of suns
We had indirect clues
Before this
All you GR haters
You were wrong -ong -ong
LIGO feels when space is rippling through
With a wave of
Gravitation
LIGO feels when space is rippling due
To a tensor
Perturbation
LIGO feels that space is rippling through
Can you feel the
Excitation?
LIGO's view of space is rippling through
Our collective
Imagination
Martin Shkreli on Drug Price Hikes
@Trancecoach
i just dont get you man.
you make a valid point,which @00Scud00 basically acknowledges,but adds the caveat that if government is taken out of the picture than the power vacuum will be replaced by a corporation.
now you could disagree with his assertion by a rebuttal,but instead you choose to insult him and then ironically pretend to not care.
if that were a TRUE statement,you would have never responded.