The Official Cool Stuff Thread
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Starship’s 33 Raptor engines in full power (from FB: Science for Astronomy)
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@HardwareGeek I thought I recognized that, but I was mistaken. It's just similar.
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@HardwareGeek said in The Official Cool Stuff Thread:
https://www.facebook.com/share/r/HA4Tjx6PXG13uQGg/?mibextid=wslSxG
Seen few days ago in Megastructures. While visiting NASA chap was showed the fabrication process, including the baking. Cubes go out bright yellow-orange, while speaking they cool, going grey near the corner but still noticeably orange at the face center. NASA guy tells, yeah, you can take in your hand now, speaker looks one or two times as asking "are you serious?" And finally grabs the cube.
Impressive.
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@TimeBandit would have been more believable if they said you would see Jesus.
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@Arantor For an online version, you can telnet to mapscii.me. It works with the mouse and everything!
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Smart Every Day - eclipse
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@dcon Watching on my phone, I literally can't see anything, even when there's an arrow pointing right at whatever I'm supposed to be looking at. Hell of a lot of lens flare, though; J J Abrams would be proud.
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@HardwareGeek said in The Official Cool Stuff Thread:
@dcon Watching on my phone, I literally can't see anything, even when there's an arrow pointing right at whatever I'm supposed to be looking at. Hell of a lot of lens flare, though; J J Abrams would be proud.
Even on a large monitor, I missed it the first time.
Spoiler
It is a satellite. And he's issued a challenge to the Space Force (specifically, to the cadets as a "test") to determine exactly which one.
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@boomzilla But only to 3. With 4, they have already problems.
Because 3 is the number, thou shalt count to three,,,
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Electro-mechanical pinball machines:
https://www.youtube.com/watch?v=XeDCCNFAULkLast in a series of 3 (?) videos; links to the earlier videos in the description.
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Comment under that video:
Had a pinball machine growing up. It was SO loud I only played when no one was home. Got home from school and it was gone. I asked why my parents sold it. "No one plays it."
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@dcon the "something unknown" bit is pretty cool. And the picture he took is very, very nice. It probably looks fantastic once framed on a wall.
But man, huge when he spends minutes explaining how to do a multi-exposition shot on a non-digital camera, and wondering "how on earth can you not advance the film?"
I remember my brother taking a very similar shot (sunrise from his bedroom window IIRC), with what was at the time a medium-price camera (the kind of things a teenager could get his hands on). There was absolutely nothing fancy in not advancing the film, not bumping the camera between shots etc. In fact, what was fancy was when cameras starting advancing the film by themselves rather than having to do it manually (and forgetting once in a while and getting double-exposition of unrelated scenes...)!
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@remi I have as many s as anybody here, but I don't think I ever used a camera that cocking the shutter and advancing the film weren't the same operation. It required intentional action to not advance the film, and there was no guarantee that the film wouldn't move slightly between exposures, so that the two were slightly mis-aligned.
Thinking about it, I vaguely remember having a camera that had a lever to cock the shutter that was separate from the knob to wind the film, but it was old and obsolete (and maybe broken) even in my early childhood. I'm pretty sure I never actually took any pictures with it; it was just a pretend toy for me.
Further thinking brought up the memory of the camera I rented while taking a photography class in college. It was a field camera. It had a lever or something on the lens to cock the shutter, but there was no film advance mechanism at all. When you had the photo composed the way you wanted, you closed the shutter, inserted a holder containing a single sheet of (8"x10", in this case) film, withdrew the dark slide (thin sheet of metal that blocks light from hitting the film), triggered the shutter, inserted the dark slide again, and removed the film holder. The film holders were, IIRC, double-sided, so the trick was remembering which piece of film was already exposed and which was fresh. IIRC, the dark slide was a different color on each face, so when you inserted it after exposing the film, you flipped it over, so you could tell which film you had already used by the color. Or something like that. There was some kind of indication, but it was entirely manual; it was up to you to keep track of which pieces of film you'd already exposed. If you wanted to double- (or more) expose film, it was easy.
Also, the English term is multi-exposure, not multi-exposition. It took me a moment to figure out what you were talking about.