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  • dp's Avatar
    05-19-2013, 02:07 AM
    dp replied to a thread HSM-Built Steel Guitar in General
    Many, possible most have heard of Gibson guitars. It sounds like none of you have heard their metal guitars....
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    41 replies | 2528 view(s)
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    05-19-2013, 02:01 AM
    dp replied to a thread G power in General
    What an awful college.
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    32 replies | 1811 view(s)
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    05-16-2013, 12:54 AM
    dp replied to a thread dropped my test indicator, where to get tips? in General
    I'm just Dutch enough to save my $70 and make one. How hard can it be?
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    16 replies | 745 view(s)
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    05-16-2013, 12:52 AM
    dp replied to a thread HSM-Built Steel Guitar in General
    Good story well told. Not what I expected in the category of Steel Guitar :)
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    41 replies | 2528 view(s)
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    05-12-2013, 01:32 PM
    dp replied to a thread Firsat 3D printed gun fired, would you pull the trigger? in General
    The last one I bought took longer for me to choose than to buy. 1/2 hour for the clearance. I have a concealed weapons permit which in this state...
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    67 replies | 4524 view(s)
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    05-10-2013, 01:40 PM
    dp replied to a thread Firsat 3D printed gun fired, would you pull the trigger? in General
    This didn't take long: http://betabeat.com/2013/05/defense-distributed-state-department-cody-wilson-3d-guns/
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    67 replies | 4524 view(s)
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    05-10-2013, 01:27 PM
    dp replied to a thread Back on the temperature measuring camera subject... in General
    I'm interested in seeing how extended or multiple exposures work on fixed targets like a circuit board. It isn't practical where succh exposures are...
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    14 replies | 755 view(s)
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    05-09-2013, 11:57 AM
    dp replied to a thread Thermal Imaging in General
    Phil - in the context of this thread the two statements are meaningless since they have no relationship to any other part of the conversation. You...
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    57 replies | 2894 view(s)
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    05-09-2013, 09:23 AM
    dp replied to a thread Thermal Imaging in General
    I've noticed when taking star trail photos with my Canon 7D or my Canon T4i the noise in the last photos is noticeably higher than in the initial...
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    57 replies | 2894 view(s)
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    05-09-2013, 09:12 AM
    dp replied to a thread Thermal Imaging in General
    I think perhaps English is not your first language and you have missed a critical nuance of the language. Consider the following precise (not...
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    57 replies | 2894 view(s)
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    05-08-2013, 06:55 PM
    dp replied to a thread Thermal Imaging in General
    Cherry picking (or "condensing" as you've called it) spoils the conversation.
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    57 replies | 2894 view(s)
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    05-08-2013, 06:54 PM
    dp replied to a thread Firefox update a bust? in General
    Not yet - since they've gone to their very aggressive build/replace schedule I've quit updating every version. Too crazy.
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    28 replies | 1336 view(s)
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    05-08-2013, 03:40 PM
    dp replied to a thread Thermal Imaging in General
    "Note thermal (just heat it up)" is not a good definition of black body emission. It is also inappropriate in this discussion because the physical...
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    57 replies | 2894 view(s)
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    05-08-2013, 01:57 PM
    dp replied to a thread Thermal Imaging in General
    http://www.devileye.net/catalog/conservation_system/thermoluminescent_material.html Thermoluminescence is not uncommon, is not black body...
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    57 replies | 2894 view(s)
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    05-08-2013, 12:17 PM
    dp replied to a thread Thermal Imaging in General
    Or a pinhole lens that has no glass at all.
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    57 replies | 2894 view(s)
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    05-08-2013, 11:38 AM
    dp replied to a thread Thermal Imaging in General
    That was a sample vid that was better done than others. The preference on youtube seems to be to try see through clothes and I didn't want to link...
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    57 replies | 2894 view(s)
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    05-08-2013, 02:24 AM
    dp replied to a thread Thermal Imaging in General
    Yeah, right.* http://www.youtube.com/watch?v=pXAzZoWLzSo In this video there is a wide range of IR spectrum seen. This can be calibrated....
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    57 replies | 2894 view(s)
  • dp's Avatar
    05-07-2013, 12:41 AM
    dp replied to a thread Our Future! in General
    What problem are you trying to solve?
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    3 replies | 471 view(s)
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    05-07-2013, 12:39 AM
    dp replied to a thread Thermal Imaging in General
    There are a number of videos on youtube that show how to convert common digital cameras to ir camera. With a bit of effort it should be possible to...
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    57 replies | 2894 view(s)
  • dp's Avatar
    05-06-2013, 11:03 PM
    dp replied to a thread It's not easy finding electronic parts in General
    Interesting device. The application notes, brief as they are, suggest it is a current-controlled silicon rectifier. It has a conduction angle of 160º...
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    18 replies | 1031 view(s)
  • dp's Avatar
    05-06-2013, 11:23 AM
    dp replied to a thread Firsat 3D printed gun fired, would you pull the trigger? in General
    You learn something every day - I've never heard of a jacketed .22 rimfire except for the Winchester Magnum Rimfire round. I have several boxes of...
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    67 replies | 4524 view(s)
  • dp's Avatar
    05-06-2013, 02:10 AM
    dp started a thread Audiolumitron Question for Evan in General
    Have you ever tried using an active light source such as a laser to paint targets watched by your audiolumitron? Aside from the obvious similarity to...
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    1 replies | 247 view(s)
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    05-03-2013, 01:42 AM
    dp replied to a thread Pages missing from Shop Made Tools thread? in General
    Yep - page numbers are arbitrary as they depend on the number of posts per page a person chooses in their personal profile. Only the post ID is...
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    9 replies | 609 view(s)
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    05-02-2013, 07:08 PM
    dp replied to a thread ac/dc resistance in General
    The Pacific inter-tie between Washington state and California is a one-way DC wire. There are multiple wires for redundancy, but current flows only...
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    27 replies | 1251 view(s)
  • dp's Avatar
    05-02-2013, 11:21 AM
    dp replied to a thread A little OT - a science quiz in General
    Thanks - here's a vid of the artist's depiction: http://www.eso.org/public/videos/eso1319a/ Not to scale, blah blah blah, but it shows the spiral...
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    208 replies | 10841 view(s)
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    05-02-2013, 09:57 AM
    dp replied to a thread A little OT - a science quiz in General
    Are you talking about this one? http://en.wikipedia.org/wiki/Hulse-Taylor_binary This stellar motion at the center of the MW galaxy should also be...
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    208 replies | 10841 view(s)
  • dp's Avatar
    05-02-2013, 09:34 AM
    dp replied to a thread making a lapping plate in General
    Go to your local hardware store and buy a square of granite floor tile. I have two that I use for finish sanding and other needs that would be too...
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    16 replies | 1133 view(s)
  • dp's Avatar
    05-02-2013, 01:49 AM
    dp replied to a thread A little OT - a science quiz in General
    Jeez - what happened to this thread? It was a simple knowledge quiz and now we're into voodoo topic land. :) And I agree with Evan fwiw.
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    208 replies | 10841 view(s)
  • dp's Avatar
    05-02-2013, 01:30 AM
    dp replied to a thread OT:Oh crap,that doesn't look good! in General
    I'm not sure what you are saying. My position is that I agree with Flylo, the plane was out of balance aft. If that is the case it can fall 100,000'...
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    43 replies | 3759 view(s)
  • dp's Avatar
    05-01-2013, 03:20 PM
    dp replied to a thread OT:Oh crap,that doesn't look good! in General
    It was in a nearly flat fall, forward velocity incompatible with flight. It had no significant ground slide indicating it had no effective forward...
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    43 replies | 3759 view(s)
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