#51
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Hi WM6.
By now i m collecting components to build one unit. For that i have a few questions that cames to my mind: 1.- A normal laser pointer working btw 630 to 680 nm, could work for this proyect? 2.- The contact lenses, must be the same optic measure or can also work with deferent optic measure? 3.-Finally i will like to ask if you know if any person has made this proyect and how this work? In advance many thanks for your support. Regards Nelson Quote:
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#52
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how can I say this... this project will work only on northern hemisphere (this is where WM6 resides).. For your part of the world you need complementary transistors, reverse power supply, etc. As I understand Dr. Best does not want his work to be copied by known south-america quasi LRL factories.. Also I tried soaking the lenses in antifreeze but the results are not so good.. Better using Freds hydrogen-oxygen combination.. or maybe nitrogen peroxide with RP-1 (refined Petroleum). I would give everything for good liter of C-stoff now. So Nelson you can try it, but I predict you'll get only randomized flashes from the device in your part of the world.. sorry |
#53
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1. You can use any normal red laser pointer (better one with stronger laser beam). Even better green laser pointer. All are covered by your photo transistor. 2. Spider question. I think you can use lenses with different optic measure, bacause of separate tunnig both sensor. 3. There was some interest at PM here, but I dont know in which phase are their projects now. Wish you DIY succes and have a great time with your GOLDY.
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#54
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I hope that your clarification helped many people to a more serious reading this thread.
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#55
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After problems with focusing contact lenses that I treated with warm CH3CHOHCH2OH solution, I read your explanation of gold color frequencies. I also read online how gold reflects another color we cannot see much better than the red and orange colors. Gold is an excellent reflector of Infrared light. Fortunately, we can find some very strong infrared lasers, and also infrared sensors. So I am changing the laser and phototransistors for infrared. But I find also the lenses no longer have the same focus when changing to infrared. IR light requires the focal length be changed by a small amount depending on what infrared frequency is used. It is with great surprise I see the warm CH3CHOHCH2OH lens treatment resulted in perfect focus of the IR reflection. I will take additional measures to insure I maintain the correct power supply polarity and PN junction arrangement for northern latitude usage. Best wishes, J_P |
#56
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yes infrared was Ultimate De Lux version of GOLDY. Its drawback is only that we need for observation of beam night vision googles which is not really cheap:
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#57
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Best wishes, J_P |
#58
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For use togheter with "Goldy" now for Army use renamed in TERRY 007 (to detect Terrorist with gold in teeth ring or piercing).
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#59
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You really look cool on this photo.I can see you only have the best. Are you married? I send you here a picture of myself. You can understand why LRL doesn´t work with very well with me.But you can use me as LRL target if you want: |
#60
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I will build the free project schematic with phototransistors changed to IR sensors. The project also has two sensors with chemical treated lenses. So maybe it is detecting the same as the military version. I also made another experiment.... I discover I can locate a gold ring at more than 10m without using laser or photosensor electronics. Plain eyes can locate the gold ring at this distance. Best wishes, J_P |
#61
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Yes, but this is so cheap and not funny.
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Nevertheless, I will take your great picture in my lab for gold target testing..
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#62
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Help!
Get me out of here.
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#63
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#64
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San to heard that Leto.
Anyway i will look forward for any news about remote sensing that really can work here in Chile. Kind regards Nelson Quote:
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#65
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I got the picture and thanks WM6 for your time.
Regards Nelson Quote:
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#66
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#67
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friendly , epitopios |
#68
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#69
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but as I said: Mean something nice (since invalid) like: So all, that could mean something bad, is off.
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#70
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Hi Nelson
So called Tyndall effect was used here. Tyndall effect was widely used to detect existence and concentration of silver and gold nano-particles in solutions but can be used in air too. To establish Tyndall effect we use laser of different colour spectrum, depending of particle size which can be from ions to some nm. Green light laser pointer are most powerful but not suitable to all nano-particles diameter and all metals. Red light laser pointer are suitable in general. So, the best solution would be fitting more laser pointer of different light spectrum stocked at device. Sensors and electronic remain unchangeable. With this device we are looking for flocks of ions over soil after sunset, not at the sunlight. You can read more about Tyndall effect on web e.g. here: http://www.silvermedicine.org/colloidal-silver-ppm.html or here http://www.scienceinschool.org/print/656 And here citation from site: http://mysite.du.edu/~jcalvert/phys/colloid.htm: Sols that contain inorganic particles, such as metals, are mostly lyophobic, as are most aerosols and solid sols. Lyophobic hydrosols are a very common kind of colloid, and deserve detailed description. For example, consider the hydrosol of gold with particles about 4 nm in size. This was one of the first sols studied extensively, and has interesting properties. With about 0.1% gold, the sol is a rich ruby red. The similar solid sol in glass makes ruby glass. The gold particles absorb strongly in the green and blue, so the transmitted light is red. There is a little yellow-green scattered light, but mostly it is a case of absorption by the gold metal. If the gold particles clump together, which they may do as time passes, the color of the solution changes. When the particles are about 40 nm in diameter, the solution is blue, with considerable scattered light. If the particles agglomerate further, the color disappears and gold flakes settle out.
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#71
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THanks a lot WM6, i will look forward for information related to the subject we are concerning about.
Regards Nelson Quote:
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#72
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For near to target detection is better to use red light laser pointer. As we know from quantum theory under shinning light electrons are ejected from the surface and can create new molecula which can be detected and wrongly interpreted (especialy by electrostatic detectors combined with laser in vicinity detection). Only red light will not cause the ejection of electrons from surface, no matter what the intensity of laser beam!
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#73
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Ok and thanks a lot WM6.
NOw i have to deal with the use of this device in South America. Kind regards Nelson Quote:
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#74
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Hi Nelson, are you ok?
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#75
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Can anybody else confirm if they got the same results? Regards, Nicolae |
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