Collections & Practicals Manager Claudia Hildebrandt and PhD Student Tim Gregory restore an iron meteorite from the school collection to reveal the Widmanstätten pattern inside.
what is resistance the voltage in the meteorite stone of metal also could it give melt in highest heating to make any circuits...will perfect system never get short resistance..?
Yeah, 6 years later I bump into this video(because this field is my passion) and when I see him I said 😅wtf hold on a second. He is Tim😋😀😀 Chris Hadfields 's favorite man in BBC series. Very surprisingly we have a lot common interest and profession
@@TugcagDUMLUPINAR Dr Tim finished his PhD thesis on cosmochemistry successfully, he also wrote a book on meteorites, but he's now left meteoritics and geology and works in a different scientific field.
I bought one "meteorite" on Amazon that they claim comes from campo del cielo, and they give a "certificate of authentification " ( for what it's worth). I honestly doubt ( though i hope) that it is a real one. Regardless, it still looks cool.
Señor Gordon Freeman I’m sure the sample you received Is real. Nobody’s taking the time to re-create the exterior look of a meteorite And then sell it for a few dollars. It just doesn’t seem to be worth the time and effort for such a small pay off. What we both have is real, not very expensive, but absolutely spectacular.
It's probably a Campo crystal (if it's shiny)... It's common for bigger pieces to be freezes with nitrogen then hit with a hammer and the small pieces to then be sold on, they're common in jewellery pieces, usually at the lower price range and Campo has a large total mass so it's the most common meteorite in the market
Hi! I`m currently doing a research in Widmanstätten pattern. Of course, it`s been 6 years since this video but maybe somebody know or (heard in the video ew) what concentration of acid was in etching and relation of acid and methanol. I`ll really appreciate it!!! Best wishes!!
Hello! I'm having trouble finding information on which solution should be used to display the widmanstatten pattern. I have read that it is a solution of nitric acid with ethanol, but how to prepare? What concentration? Personal help to colleagues who have experience in this technique. Thank you!
Hello, I work with cast iron and steels. We normally etch samples with 0.5 to 2 vol% Nital. Lower concentration etches slower and can be easier to control and get uniform etch. I would guess you can use similar for meteoric iron.
OMG! Hi Tim, the sample you showed in the first of video is like mine, and I have huge pieces of those rocks. I do highly appreciate if you can help me for an identification. Thanks Tim
If you think you have pieces of Campo then they'll have already been authenticated... If what you have isn't authenticated then it's probably not Campo and may or may not be a meteorite
@@JuanSanchez-rb4qu Argentina Del Camp meteorites are widely sold at all rock and gem shows in the US for over 40 years. You are not in reality and Argentina has no laws.
Educated guess: dark and bright spots are both ferrite (body-centered cubic iron crystal) but are grains with different orientation. The etching causes grain with different orientations to reflect light differently, thus be perceived as different brightness.
Have those who disbelieved not considered that the heavens and the earth were a joined entity, and We separated them and made from water every living thing? Then will they not believe? (Al-Quran 21:30)
*The claim that Widmanstätten patterns are ONLY FOUND IN METEORITES is absolutely incorrect. Native iron deposits at Disko, Greenland, Josephine County, Oregon, Cape York, etc.. all display unmistakable Widmanstätten patterns.*
سلام استاد ودوست عزیز میتونید یه سری بزنید به پیجم وبرای شهاب سنگ تو خارج مشتری پیدا کنید توایران اصلا خریدار نیست ومن خیلی تلاش میکنم ولی زندگی تو ایران سخته درامدم کمه نمیتونم بیام خارج وتومزایده ها شرکت کنم لطفا کمکم کنید تا شهاب سنگ هاموبفروشم امیدوارم خدا وندخوبم بهت خیربده الهی امین
