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Videos (1000) | Sift Talk (88) | Blogs (160) | Comments (1000) |
Videos (1000) | Sift Talk (88) | Blogs (160) | Comments (1000) |
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Can Spinlaunch throw rockets into space?
At those g forces, with few exceptions, it seems it would be useless to launch most satellites, and it’s definitely not for live cargo.
It would be great on the moon….as a super weapon to blackmail earth with. It could launch all the rocks the Moon Master desires at any earth target….like a moon mortar with unlimited ammo.
I was thinking the same thing.
But I do agree with him that it would be great on the Moon.
Can Spinlaunch throw rockets into space?
I’m thinking Mt Chimborazo in Ecuador…at over 20000 ft, it’s peak it the farthest from the center of the earth (while not being the highest above sea level thanks to the equatorial bulge).
Sure, it doesn’t remove air resistance or friction, but halving it, even cutting it by 1/3 is a massive leap in efficiency and negates much of the extreme engineering and materials needed to overcome the friction….plus, as you mentioned, there’s the rotational speed advantage from launching on the equator vs Florida.
Also, while extremely minor, there’s also a slight reduction in gravitational pull at those heights. A joule saved is a joule earned!
Using a mountainside might help with structural integrity, but it's not likely to give much air resistance advantage if I'm reading the math correctly. The 5 highest peaks in the US are all in Alaska and and range from just under 5km to just over 6km. Commercial jets using air resistance/density for lift fly at about 10km and even at 38km aerodynamic lift still carries 98% of the weight of the plane (https://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_line)
Air density is halved at 5km compared to sea level, but air resistance doesn't diminish as quickly (due to it being multiplied by velocity squared and drag coefficient), and only becomes irrelevant (for short-term purposes) around 100km at the Karman Line.
If we had a 5km peak in Florida, the lack of logistical costs might make the benefits worth it, and if we could build on one of Equador's 5km peaks, then there's the further advantage of equatorial location for optimal rotational advantage (part of the reason we launch from South Florida)
bobknight33
(Member Profile)
https://youtu.be/JG8PhtFrO0Y?t=9972
Did you know that NOT aiming a gun at someone could be more threatening than aiming a gun at someone? News to me.
He also has an odd definition of "lowering"
And if he's aiming his gun first, while not being aimed at... and "lowering"his gun by moving it away from the earth and towards the sky, and fires, and the man still isn't aiming a gun at him...
I hope you don't run into this kid and not aim a gun at him. That could make him feel like you're going to kill him.
How to identify a seal
Oh hell no! This is to entertaining to not sift. The way in which he delivers the information is just great. *promote
If we can't trust BBC Plant Earth, who can we trust?!
dedstick
(Member Profile)
Your video, Can the world's whitest paint save Earth?, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.
Can the world's whitest paint save Earth?
Good for slightly cooling heat islands (cities) a tiny bit, but unless they require it on every house, building, parking lot, road, anything else dark…it won’t do much even locally. The thought that they could paint 1% of the planet is absolutely insanity. Have they even been to earth? It’s huge, and mostly unpaintable. (and I have serious doubts about that number since way more than 1% of the earth WAS covered with white ice that’s now dark ocean or exposed permafrost, and that has to be replaced before we are back to the earth’s normal reflective value, they’re talking about making it more reflective than it was naturally to reduce average temperatures…good luck).
They seem to completely ignore that it’s only that reflective when brand new, are we going to pressure wash 1% of the earth twice a week to keep it reflecting? I think not, so within two weeks, it won’t be any better than 80% regular paint. What a waste of time and energy.
I’m sure there are excellent applications for such a reflective paint, combating climate change is absolutely not one. Wishful thinking at best.
lucky760
(Member Profile)
Your video, What it's like growing up in the coldest town on earth, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.
KDLT-TV 1999ft tower being climbed
Because the Earth really isn't flat. It's a horizon thing.
Wow, why so high?
Special Effects for "War Of The Worlds" (1953)
SPOILER ALERT
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As it turned out in the end we learn the aliens died because they were not vaccinated.
A true-fake story.
The Martians on Earth are eventually killed by earth-borne bacteria, of which their immune systems couldn't cope due to having destroyed diseases on their home world of Mars.
https://waroftheworlds.fandom.com/wiki/Martian
Man Who Shot At Police In Self Defense Is Acquitted
Who are you and what have you done with Bobknight?
I’m incredibly glad you’ve moved away from “don’t want to get beaten to death, should have complied with the officers”. I fear it’s only because the victim was protecting his friend’s business from BLM protesters, and appears white…so it’s only bias that allows you to see this as a violent criminal act by police.
I hope I’m wrong and you’ve come around to the truth, that police have become nothing but a violent criminal gang over the last 25 years and need massive reform, which has been poorly named “defund the police”….time will tell if you’ve really changed your tune or if you still only see this as a crime when the victim agrees with you politically.
Ending qualified immunity is the main thing BLM wants (besides ending racist policing). That would allow victims to sue the officer(s) that committed the crimes and prosecutors to prosecute them. Republicans blocked any efforts to remove it, even though most Republican voters want it removed or at least seriously curtailed. That’s why they get a pass, that’s why taxpayers pay for their criminal acts, that’s why they’re still police.
This means you are now on the side of BLM and against Republican congresspeople and Trump, at least on this issue. Welcome back to Earth.
Well looks like they blue shirts did get away with it but this is still clearly wrong.
They should have been charged with crimes. But they got a pass.
All that is left is a cash settlement for their fuck up. And yes tax payers will pick up the tab. Thats fucked too. Pay out should be taken from the PD budget.
PFAS: Last Week Tonight with John Oliver (HBO)
By that logic, Newt, its back to caves and eating berries for everyone. And 7 billion people need to die to make planet Earth sustainable.
Everything civilization does is toxic in some way. Even living in caves was deadly, ask the Mammoths.
I like how youre taking everything responsibly but in this case you might be lumping too many things into one problem. If we strive for any progress at all we have to take risks.
Maybe the consensus will be that we cant handle the production problems and need to ban the poly stuff, but this video was not the compelling analysis that would even push me in that direction.
That’s why humans don’t deserve to survive. As a species, we’re so irresponsibly self centered it’s going to kill the planet and us with it, all for nothing worth having.
Cumbre Vieja Volcano Erupts in La Palma, Spain (compilation)
Earth's orgasam. Anyone got a cigarette?
People are dumb, panicky dangerous animals and you know it
Five hundred years ago the earth was not flat.
Why We Are Losing the Night Sky
It's amazing how light at night keeps us from the experience that we are drifting in endless space with earth as our only spacesuit. "Living in a fishbowl, year after year."
The Ultimate Entrance
How on Earth did he do that without special effects?!?!?!?