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Post by cpdad on Sept 12, 2007 18:57:35 GMT -5
hey guys...science teacher said no go on trying different methods of stabilizing fractures in stone...there will be no melting of super glue or cooking of any other chemicals for his project he was told. they shot down last years 1st project also....testing different manufactures of shot gun shells for accuracy..from the same gun...go figure ...and we ended up here for ideas last year...for a quick project...which he graded nicely....thank ya all. science teacher told cp that he went to the regionals 2 years ago...and he expected him back at the regionals this year...cp hated going to the regionals....he doesnt like to speak to a group { long story}...but he dont wanna let his favorite teacher down at the same time....the chemical thing wouldnt be allowed for his class so he is going to make some goggles that allow you to see in infrared only....and look at a healthy plant....1 half dead...and 1 dead...so im told ;D....and see if theres a difference in infrared vision. we are still going to do the stabilizing project...but it will have to wait until this is finished...special thanks to everyone....kev.
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Post by parfive on Sept 12, 2007 20:27:35 GMT -5
Kevin: "...there will be no melting of super glue or cooking of any other chemicals for his project he was told."
Just try flyin' to the nationals with that chit. ;D
Or last year's shotgun shells. ;D ;D ;D
Rich
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Post by joe on Sept 12, 2007 22:05:11 GMT -5
Dang Kev, you're just gonna have to find a "correct" project!!
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Pdwight
has rocks in the head
Member since June 2003
Posts: 619
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Post by Pdwight on Sept 12, 2007 23:31:17 GMT -5
I love the idea of the Shotgun shells, ask his science teacher if it will be OK to make a 12 foot tall Tesla coil capabile of 500,000 volts and artificial lightning 6 feet long and then study the effect of the ozone produced on plant life....did you see "The Prestiege" think that device......that would get some attention.
For an infrared viewer you can get an infrared filter that has a cutoff of arounf 600 to 700 NM and put it on a regular camcorder and it will record in the infrared mode and you can make video of your project.
I still like the shotgun shells best, how about 22LR ammo the difference in supersonic or high speed ammo and target standerd velocity why it is more accurate...no transonic barrier to go through to destabilize the bullet........did I say I love Science fairs ;-)
Dwight
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Post by LCARS on Sept 13, 2007 0:03:30 GMT -5
Hey Kev! I read an article somewhere on the net (sorry no link) about a guy who made near infra-red goggles out of two Hoya R72 camera lens filters mounted in some old german style riding goggles. After some adaptation time the wearer's eye's can become sensitive enough to see fairly clearly in the near inrared (650-750nm range) in daylight. I'm not sure if you were going for the "electronic" version of infrared goggles but the "analog" version may provide more "neato" factor for working on the human eye alone and without an external imaging device. It should be cheaper too (aprox $35 per filter x2 + some apropriate riding or welding goggles to convert). You can get lens filters in a variety of threaded diameters from 32-72mm from online reatilers and most large camera shops. I actually have a 58mm Hoya R72 filter for taking near infrared images with my digital camera and I have tried this trick myself by placing it over a short cardboard tube (OK it was a toilet paper roll) and then looking through it without allowing any light in from the sides. After about a minute it's easy to see the foliage on sunlit plants glowing brightly in comparison to trunks and stems. There is a striking difference in contrast between objects in this spectra. After about 6 minutes I never noticed any more sensitivity but far away objects appeared much more clear and sharp (no I don't need glasses either). Everything looks the same but different. Infrared is not absorbed and relfected in quite the same way as most visible light so it's actually pretty trippy. There is one danger though, the R72 is NOT a bandpass infrared filter, it is a low-pass wavelength filter only. This means that much more of the longer wavelength invisible and potentially harmfull to your eyes type of infrared will still be able to get into your eyes. You just have to avoid looking anywhere near the sun though because your eyes will be adjusted for low visible light levels yet blissfully unaware of the proportionately higher amount of invisible IR still getting in, where normally the also high visible light levels would constrict your pupils, in this case they would not. Anyway, it was just a thought, and since I thought it was pretty cool and it might be potentially usefull I thought I should share it, even if only as a potential "plan-C" or D, or whatever one you're working on now. Cheers! Rob
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Post by LCARS on Sept 13, 2007 0:41:09 GMT -5
Here are two photos I took while trying out my filter when I first got it. there is the near infrared image and the coresponding visible image to compare it to. Sorry they are not the best quality photos i've taken but remember, these were "test" shots to determine light metering offset, aperature settings & shutter speeds etc. but they should demonstrate the point. The image is of Mount Baker in Washington state, as seen from just west of Victoria, British Columbia, looking E-N-E. Grant Peak (summit) is 80 statute miles line of sight from where the photo was taken. Near infrared spectra (obviously), aprox 960-700nm. Visible spectra (obviously), Aprox 680-380nm. The difference between them is striking, even once you get past the pinky hue. Look at the the mountains, there is so much you just don't see in the visible spectra that is plain and sharp in the NIR. The foliage on the tree looks like it's glowing but the water is jet black. Thedetail that is sharply visible in the far distance is incredible, I just wish my camera rig could do it more justice. My camera still has the stock "heat mirror" in it that relfects shortwave IR so it doesn't "cloud" your images. This leaves a very narrow band-pass for IR and limits the range that it can pick up and thus I have to use long exposure times and minimum F-stop for them to look any good. I have been meaning to dig it out but I will have to replace it with a comparable piece of optical glass or it will be buggered and that's the not so easy part I refuse to even attempt until I have a new primary camera. I know I have some other IR images but I'll be damned if I can find 'em in this tarn fangled XP system. I may have deleted them after backing up to DVDR..? Anyways, just thought I would share these cool pics for fun scientific puroses. Rob ;D
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stonesnbones
spending too much on rocks
Member since September 2007
Posts: 255
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Post by stonesnbones on Sept 13, 2007 7:38:21 GMT -5
cpdad,I am a semiretired educator.One of the things that always infuriated me during my teaching years were educators who limited or even shackeled the students abilities and ideas.Ok guns in todays world will be shunned in any form at schools its a fact of the world we live in.In my opinion there are way too many educators today who have not a clue how to think outside the box.It is good to see your sons going though with his original plan.My signature on the internet boards is the same at all places.........
The mind is not a vessel to be filled,it is a fire to be lit
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Post by cpdad on Sept 13, 2007 19:43:47 GMT -5
hahaha...rich i know where ya coming from ;D...im not sure cp would go to a national even if he could ...that would take a lot from him. LCARS...thanks for the photos....he looked at them....and said now thats cool......we do not have a camcorder...here is the link he gave me amasci.com/amateur/irgoggl.html at the bottom of the page it has a link...i think it is called dying plants or something....the link is no good for me.....i am having him email the dude and see if it might be available.....as far as i can tell thats the whole deal of the project hes talking bout.....whats missing if they dont look the same in infrared....he wont be able to tell if different....just guess i suppose. dwight...i like the shell project also ;D...but they said no way...aint gonna happen ;D...never. ;D. stonesnbones....i have seen your work on another site....you do very nice work....and yes they....the teachers have now corraled the kids up so bad...that everything is kinda pre done for them....prelists of this...prelists of that....look over this list...stuff like that....i can honestly say we throw those away....thats why we get so many....nope it aint gonna works ;D. if anyone has ideas for this little venture.....please do post ;D...kev.
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Post by krazydiamond on Sept 13, 2007 20:13:41 GMT -5
is CP into any kind of LEGO robotics?
KD
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spikeict
fully equipped rock polisher
Alba gu bra! In Promptu
Member since November 2006
Posts: 1,413
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Post by spikeict on Sept 13, 2007 20:24:24 GMT -5
No new ideas, but I am afraid I have to go along with the Teacher. Heating super glue can be and is fatal. There is a process for bringing out fingerprints on paper and other items even though the prints are many years old that is for the most part heating super clue.
I took a course in this technique (it is called cyanoacrylate fuming) several years ago and the Autopsy pictures of the lungs from some of those that had died were terrible, they were coated on the inside with super glue, The point was not lost on me.
While I think it is really cool that CP is looking for a new way, thank the teacher!!
Spike
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Post by LCARS on Sept 13, 2007 21:10:46 GMT -5
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