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Forums
4hv.org :: Forums :: General Chatting
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Post Your Cool Pic Here!

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Marko
Fri Nov 03 2006, 09:37AM
Marko Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
Yeah, somebody should start acrylic Q&A thread but won't bother cristopher neither!

When I tried to bend it it looked like hell, nowhere to get that pretty dichloromethane solvent, and I didn't even know there are such things in existence as acrylic tubes! :p

Perfect primary form and secondary protection!

Great coil (and pic) Cr!

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Bjørn
Fri Nov 03 2006, 03:15PM
Bjørn Registered Member #27 Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
Fill in an amusing place and time at the top using white letters.

1162566934 27 FT6000 Poster
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...
Sun Nov 05 2006, 12:18AM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
anyone guess what this is?
1162685904 56 FT6000 Img 1902
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Penguin7471
Sun Nov 05 2006, 07:33AM
Penguin7471 Registered Member #71 Joined: Thu Feb 09 2006, 08:23AM
Location:
Posts: 63
Green laser light being diffracted through something weird... Can't make out what that "hook" on the left is. Maybe a long exposure of drifting fringes from a interferometer?
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...
Sun Nov 05 2006, 03:50PM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
yes it came from a 532nm laser, no is wasn't a long exposure.

Not sure what hook you are talking about, if it helps there are 2 doorknobs in that pic.
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Simon Barsinister
Wed Nov 08 2006, 03:55AM
Simon Barsinister Registered Member #116 Joined: Fri Feb 10 2006, 03:19AM
Location: Erie Pa, USA
Posts: 29
This was not too cool when it happened, but in 1985 I was on an Iberia airlines flight from Frankfort to Madrid and it taxied into a fuel truck after landing. It felt like someone chucked a log under the left main wheel. The stewardesses weren't too happy with me snapping shots of the fiasco. Most of the other passengers were Germans and at that time I spoke enough German to be amused at their sarcastic remarks. We had to de-plane out the rear airstair. (It was a Boeing 727 btw)

Rich
1162958118 116 FT6000 Iberia727wing1
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Alex
Wed Nov 08 2006, 03:59AM
Alex Geometrically Frustrated
Registered Member #6 Joined: Thu Feb 02 2006, 04:18AM
Location: Bowdoin, Maine
Posts: 373
If movies have taught me anything, there should be fireballs in that picture.
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Dr. Drone
Mon Nov 20 2006, 07:20AM
Dr. Drone Registered Member #290 Joined: Mon Mar 06 2006, 08:24PM
Location:
Posts: 1673
shades
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Chris
Mon Nov 20 2006, 07:57AM
Chris Registered Member #8 Joined: Thu Feb 02 2006, 04:34AM
Location: Harlowton, MT, United States
Posts: 214
Kind of old, but these are some nice close up shots of my xenon short arc lamps. It would be interesting to get a shot of one running like through a darkened filter of some kind, but I'm not sure just how to go about it.


1164009245 8 FT6000 Hpim0054


HPIM0048


HPIM0049

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Steve Conner
Mon Nov 20 2006, 05:51PM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Jeez, those look like they mean business! Did you ever get one to light? I remember trying to get a smaller mercury short arc lamp to light, it was a total pain since it took something like 2kV to strike and then 12V @ 10A to run. That was before I knew about Tesla coils, though, it would be easier now smile When I finally did get it to strike, I was shocked by how bright it was (and probably dangerously UV-rich too...)

PS: Do you know what the cooling requirements are? Those lamps look like the kind of things that would explode violently if they didn't get enough airflow.

To get a picture of the arc, I'd use a pinhole camera to project it onto a piece of white paper and photograph that. The arc in mine looked like a tiny sphere about half the size of a rice grain.
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