|
http://en.wikipedia.org/wiki/The_Motherland_Calls
|
# ? Aug 23, 2012 02:48 |
|
|
# ? Jun 11, 2024 18:55 |
|
The Motherland Falls!
|
# ? Aug 23, 2012 05:04 |
|
MIT has invented a camera capable of recording a trillion frames per second. This is an image from a video created of a pulse of light scattering through a coke bottle. Technically the video in the link (the light pulse sequence happens at about 1:47) was created by combining many repetitions because the camera only sees one spatial dimension, but the end result is pretty freaking The same technique can also be used to see around corners. gently caress I love living in the future.
|
# ? Aug 23, 2012 05:31 |
|
Lonely Swedish posted:The same technique can also be used to see around corners. gently caress I love living in the future. And we all laughed about "Enhance zoom rotate enhance". Guess we owe Ridley Scott some apologies.
|
# ? Aug 23, 2012 07:40 |
|
Lonely Swedish posted:
I watched the TED lecture on this the other night when I took mushrooms and holy poo poo my brain almost leaked out my ears.
|
# ? Aug 23, 2012 08:08 |
|
Vidaeus posted:I watched the TED lecture on this the other night when I took mushrooms and holy poo poo my brain almost leaked out my ears. To be fair, if the shrooms are any good watching your sofa cushions should do the trick. Still, that's some badass science.
|
# ? Aug 23, 2012 09:15 |
|
Wait, does that mean that camera is actually recording light travel? Like recording at the speed of light?
|
# ? Aug 23, 2012 19:40 |
|
Here's another angle. That's to bad. I hope they get it fixed.
|
# ? Aug 23, 2012 19:47 |
|
Darth Freddy posted:Wait, does that mean that camera is actually recording light travel? Like recording at the speed of light? If I understand correctly, it's not actually seeing the source light travel through space, but they're seeing its interactions with objects by looking at the scatter patterns (?) Kind of like ultrasound. You're not actually seeing the sound waves themselves, but gathering the signals that bounce back after hitting the object being examined, and interpreting those signals to figure out the shape and distance of the object. Could be wrong, feel free to correct.
|
# ? Aug 23, 2012 19:54 |
|
Lonely Swedish posted:The same technique can also be used to see around corners. gently caress I love living in the future. Future Paparazzi are going to be hardcore
|
# ? Aug 23, 2012 20:41 |
|
DoleMIGHTY posted:If I understand correctly, it's not actually seeing the source light travel through space, but they're seeing its interactions with objects by looking at the scatter patterns (?) Even more boring, they repeat the event many times with slight timing differences to build what appears to be a continuous shot. So a "trillion frames per second" is slightly misleading because the event itself has to be repeatable to get that final imaging.
|
# ? Aug 23, 2012 20:45 |
|
Factor Mystic posted:Even more boring, they repeat the event many times with slight timing differences to build what appears to be a continuous shot. So a "trillion frames per second" is slightly misleading because the event itself has to be repeatable to get that final imaging. Comparable to taking "slow motion" video of, say, a sprinter, by having him run the 100m a trillion times, and taking a picture of the entire 100m track with a picosecond increase in delay each time?
|
# ? Aug 23, 2012 20:51 |
|
Mr. Gibbycrumbles posted:Future Paparazzi are going to be hardcore Future Beverly Hills houses are going to have a ton of corners.
|
# ? Aug 23, 2012 21:00 |
|
Chantilly Say posted:Future Beverly Hills houses are going to have a ton of corners. I think I read somewhere that Chinese architecture in temples traditionally has a lot of corners because certain demons can't go round them. Clearly paparazzi are a kind of demon.
|
# ? Aug 23, 2012 21:39 |
|
DoleMIGHTY posted:Comparable to taking "slow motion" video of, say, a sprinter, by having him run the 100m a trillion times, and taking a picture of the entire 100m track with a picosecond increase in delay each time? Yeah, that's pretty much the gist of it. Except that the sprinter runs the distance in about a nanosecond (one billionth), so you only have to repeat it a few hundred times to make a video clip a few seconds long: MIT posted:Fastest electronic sensors have exposure time in nanoseconds or hundreds of picoseconds. To capture propagation of light in a tabletop scene we need sensor speeds of about 1 ps or one trillion frames per second. To achieve this speed we use a streak tube. The streak camera uses a trick to capture a one dimensional field of view at close to one trillion frames per second in a single streak image. To obtain a complete movie of the scene we stitch together many of these streak images. The resulting movie is not of one pulse, but is an average of many pulses. By carefully synchronizing the laser and camera we have to make sure each of those pulses look the same. It's not yet as cool as its potential, but a "shutter speed" on the order of picoseconds (trillionths) is pretty mind-blowing in and of itself.
|
# ? Aug 23, 2012 23:31 |
|
|
# ? Aug 24, 2012 06:00 |
|
Lonely Swedish posted:Yeah, that's pretty much the gist of it. Except that the sprinter runs the distance in about a nanosecond (one billionth), so you only have to repeat it a few hundred times to make a video clip a few seconds long: I think that even to get a reasonable exposure they have to take the same shot over and over again at the same time/place as well.
|
# ? Aug 24, 2012 08:15 |
|
Who knew moosepoop has a new favorite as of 11:37 on Aug 24, 2012 |
# ? Aug 24, 2012 08:23 |
|
Heintron posted:Who knew bomber crews could be so bad rear end. They look like they're about to break into a dance routine. An awesome dance routine.
|
# ? Aug 24, 2012 08:44 |
|
Heintron posted:Who knew bomber crews could be so bad rear end. They're stood in front of a U-2 so they're actually spy plane crews. They fly to about 70,000ft, that's why they're wearing what look like spacesuits.
|
# ? Aug 24, 2012 11:31 |
|
Captain Splendid posted:They're stood in front of a U-2 so they're actually spy plane crews. They fly to about 70,000ft, that's why they're wearing what look like spacesuits. U2? Pfft, that's like a WWI bi-plane compared to this glorious monument to aviation: America....gently caress YEAH! quote:One moonless night, while flying a routine training mission over the Pacific, I wondered what the sky would look like from 84,000 feet if the cockpit lighting were dark. While heading home on a straight course, I slowly turned down all of the lighting, reducing the glare and revealing the night sky. Within seconds, I turned the lights back up, fearful that the jet would know and somehow punish me. But my desire to see the sky overruled my caution, I dimmed the lighting again. To my amazement, I saw a bright light outside my window. As my eyes adjusted to the view, I realized that the brilliance was the broad expanse of the Milky Way, now a gleaming stripe across the sky. Where dark spaces in the sky had usually existed, there were now dense clusters of sparkling stars Shooting stars flashed across the canvas every few seconds. It was like a fireworks display with no sound. I knew I had to get my eyes back on the instruments, and reluctantly I brought my attention back inside. To my surprise, with the cockpit lighting still off, I could see every gauge, lit by starlight. In the plane's mirrors, I could see the eerie shine of my gold spacesuit incandescently illuminated in a celestial glow. I stole one last glance out the window. Despite our speed, we seemed still before the heavens, humbled in the radiance of a much greater power. For those few moments, I felt a part of something far more significant than anything we were doing in the plane. (From here.)
|
# ? Aug 24, 2012 13:26 |
|
DrBouvenstein posted:U2? Are those streaks on the wings the fuel it leaks when the plane isn't heated up from going supersonic speeds?
|
# ? Aug 24, 2012 13:53 |
|
Dusseldorf posted:Are those streaks on the wings the fuel it leaks when the plane isn't heated up from going supersonic speeds? Condensation from the pressure on the wing.
|
# ? Aug 24, 2012 13:57 |
DrBouvenstein posted:
Holy poo poo, I want to go to there. I gotta get this close to space at one point or another.
|
|
# ? Aug 24, 2012 14:50 |
|
Black Griffon posted:Holy poo poo, I want to go to there. I gotta get this close to space at one point or another. There is a book called Sled Driver that you can try to track down if you want to read a lot more stories like that, written by the same person who wrote that quote. It is, however, extremely rare and extremely expensive.
|
# ? Aug 24, 2012 15:00 |
|
DrBouvenstein posted:U2? As much as I love the SR-71, the U-2 is an absolute prick of a plane to fly and so the pilots who actually put up with it are that much more bad-rear end. http://en.wikipedia.org/wiki/Lockheed_U-2 posted:High-aspect-ratio wings give the U-2 some glider-like characteristics, with a lift-to-drag ratio estimated in the high 20s. To maintain their operational ceiling of 70,000 feet (21,000 m), the U-2A and U-2C models (no longer in service) must fly very near their maximum speed. The aircraft's stall speed at that altitude is only 10 knots (12 mph; 19 km/h) below its maximum speed. This narrow window was referred to by the pilots as the "coffin corner". For 90% of the time on a typical mission the U-2 was flying within only five knots above stall, which might cause a decrease in altitude likely to lead to detection, and additionally might overstress the lightly built airframe.[5] Key points: Max speed at operating altitude - 805km/h Stall speed at operating altitude - 785km/h Landing requires a spotter, stalling the plane, and dragging a wingtip on the ground.
|
# ? Aug 24, 2012 15:07 |
|
gooby on rails posted:There is a book called Sled Driver that you can try to track down if you want to read a lot more stories like that, written by the same person who wrote that quote. It is, however, extremely rare and extremely expensive. Holy poo poo you weren't kidding.
|
# ? Aug 24, 2012 15:08 |
|
DrBouvenstein posted:U2? Ah, here's the best, baddest-rear end, most story from that thing: quote:There were a lot of things we couldn't do in an SR-71, but we were the fastest guys on the block and loved reminding our fellow aviators of this fact. People often asked us if, because of this fact, it was fun to fly the jet. Fun would not be the first word I would use to describe flying this plane--intense, maybe, even cerebral. But there was one day in our Sled experience when we would have to say that it was pure fun to be the fastest guys out there, at least for a moment.
|
# ? Aug 24, 2012 15:15 |
|
Phanatic posted:Ah, here's the best, baddest-rear end, most story from that thing: HOLY poo poo I'm getting this.
|
# ? Aug 24, 2012 15:24 |
|
Can I borrow it after you are done?
|
# ? Aug 24, 2012 15:39 |
|
Phanatic posted:Ah, here's the best, baddest-rear end, most story from that thing: I'm not even American but
|
# ? Aug 24, 2012 15:51 |
|
Wade Wilson posted:Holy poo poo you weren't kidding. Wow, that's even worse than I thought. The softcover printing usually goes for ~250 used (475 new).
|
# ? Aug 24, 2012 16:06 |
|
Snowglobe of Doom posted:I'm not even American but The thing that blows my mind most about that airplane isn't even the airplane, it's the engines. That engine was built in 1958. *1958*. The Commodore 64 I had as a kid would have been a computing miracle, you could have conquered the loving world with it. Automobile engines still couldn't deliver one horsepower per cubic inch. B-29 bombers were still flying. And Lockheed built a hybrid ramjet capable of sustained full-power operation at Mach 3+. Look at this loving afterburner stage:
|
# ? Aug 24, 2012 16:06 |
|
I don't know who's the bigger badass in the story, Walter or the air traffic controller who, upon realizing a goddamn Blackbird was in his airspace, just calmly rattled off their speed like any other plane.
|
# ? Aug 24, 2012 16:39 |
|
1stGear posted:I don't know who's the bigger badass in the story, Walter or the air traffic controller who, upon realizing a goddamn Blackbird was in his airspace, just calmly rattled off their speed like any other plane. All of them are. I wish all commercial pilots had the 'Houston Center Voice'.
|
# ? Aug 24, 2012 16:48 |
|
Isn't there a comedian who has a routine about how people from the South and Texas sound like complete hicks, right up until you hear them over the intercom in the cockpit, where suddenly that accent means the person up there is the most collected and competent son of a bitch in the world?
|
# ? Aug 24, 2012 16:56 |
|
1stGear posted:I don't know who's the bigger badass in the story, Walter or the air traffic controller who, upon realizing a goddamn Blackbird was in his airspace, just calmly rattled off their speed like any other plane. There's another where a Blackbird has to enter someone's Class A airspace, not sure who. They call the tower: "(Callsign) requesting flight level 550." (That's 55,000'). Tower responds: "If you can get there, it's yours." "Roger. Descending to FL550."
|
# ? Aug 24, 2012 17:08 |
|
God drat that's cool
|
# ? Aug 24, 2012 17:43 |
|
In 1970 an F-106 went into a flat spin during a training mission over Montana. The pilot rode the plane down for four miles trying to recover from the spin. Part of the protocol was to hit a control that set all the trim for landing. He couldn't recover and punched out at 15,000 feet. The plane proceeded to quickly sort itself out and fly straight and level. One of his wingmen radioed "Gary, you'd better get back in." The jet eventually brought itself in for a gentle landing due to the pilot having set it up for landing prior to having to eject. Where the jet came to rest in a cornfield. Relatively minor damage from the belly-landing. But the story doesn't end there. Local law enforcement arrived on the scene before the Air Force and the sheriff called the base because the engine was still roaring away. He was given instructions on how to throttle down and throw the master breaker and this cop actually climbed up onto a crashed jet that still had the engine running to try and shut it down! Unfortunately the snow under the jet was being melted from the engine heat and the jet shifted and started to scoot along the snow. The sheriff jumped off and the plane went another 400 feet before finally stopping. The jet was recovered and went into storage for a few years before being brought back out, repaired and flown until at least the 1980s.
|
# ? Aug 24, 2012 18:18 |
|
|
# ? Jun 11, 2024 18:55 |
|
Another (almost not) badass SR-71 story.
|
# ? Aug 24, 2012 18:19 |