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Cutting a Klein Bottle in Half [video]
- HCIdivision17 11y agoJust because there has to be an obligatory link to his phenomenal website: http://www.kleinbottle.com/ http://www.kleinbottle.com/ Cliff Stoll has to be one of the most genuine and wonderful mad engineers out there. His work is just one gem of brilliant hackery after another.
- vermontdevil 11y agoAnd his TED video too - great stuff. https://www.ted.com/talks/clifford_stoll_on_everything?language=en https://www.ted.com/talks/clifford_stoll_on_everything?langu...
- dbarlett 11y agoI highly recommend ordering one. The checkout process, packaging, and invoice are almost as good as the bottle itself.
- jws 11y agoAnd remember the inventory is stored in the crawl space under his house and he uses tiny robots he built himself to go in and pull the inventory out.
- david-given 11y agoDon't forget the guarantees! http://www.kleinbottle.com/guarantee.htm http://www.kleinbottle.com/guarantee.htm
- lifeformed 11y agoIs a cut glass edge not sharp? It was hard to watch him run his finger along the edge like that.
- Natsu 11y agoThat depends on whether it has been seamed or has edgework. It's incredibly sharp if nothing has been done to it, enough so that merely touching glass edges can cause cuts. Glass is normally seamed before tempering, but that doesn't leave it perfectly smooth either. I've gotten glass splinters from it, along with finding edges that didn't get seamed well, though most sharp edges will break in the tempering furnace (this is why you seam glass prior to tempering). Glass splinters are as horrible as you might imagine and can take weeks to work themselves out, as well as being ridiculously hard to see. So yeah, I don't recommend the practice if you're not sure, but it may be okay for glass that has had edgework done as this glass gets polished smooth, whereas tempered glass is probably okay, but not always safe. EDIT: Looks like it's blown glass. No, that's not very safe.
- DHJSH 11y agoI expected his finger to be bleeding after he picked it up. I'm wondering if it's just a property of the diamond saw, or he likes to live dangerously.
- DannyBee 11y agoHaving a cut a ton of stuff with diamond saws, the edge they leave is very abraded, and rarely sharp. This is not surprising, since it's basically like cutting it with 60-180 grit sandpaper
- Natsu 11y agoYou're probably right that the edge isn't so sharp, though I note that his finger was higher above it than it looked, but I wouldn't underestimate glass splinters. Those really suck.
- JshWright 11y agoI love Cliff Stoll so much... I hope one day to be as passionate about _something_ as he seems to be about everything... If you haven't read The Cuckoo's Egg, I'd highly recommend it. It details his experience tracking down one of the first "hackers" back in the 80's, when he was a sysadmin for Lawrence Berkeley National Laboratory.
- sp332 11y agoThere's a one-hour long NOVA episode about that story. https://www.youtube.com/watch?v=EcKxaq1FTac https://www.youtube.com/watch?v=EcKxaq1FTac
- Ductapemaster 11y agoIt really is a fantastic story. I can't recommend it enough.
- teh_klev 11y agoI read it when it was first published, twice in the same week I bought it. It's was a really good story. Sadly I lost my copy, possibly due to lending it to someone.
- smoyer 11y agoI've got an old copy and have read it through twice ... and it's currently sitting in my bosses office waiting for him to read it. I'd say that it's one of my two favorite non-fiction books (the other being "Surely You're Joking Mr. Feynman").
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- Magi604 11y agoI want a diamond saw.
- ubersync 11y agoHow did I not know about Cliff Stoll until today?
- hgibbs 11y agoFunny story. I saw this video yesterday morning, about an hour before my topology exam. One of the questions involved calculating the Euler poincare characteristic of a 3 fold sum of RP2. Unfortunately, I had forgotten the formula for the case of m-fold sums of RP2 but I knew that it was linear in m and that the Euler poincare characteristic of RP2 was 1. Luckily, I remembered a Klein bottle is homeomorphic to the 2-fold sum of RP2. Having seen this video and knowing the cell complex structure of a mobius band ended up being enough for me to derive the answer.
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- waqf 11y agoYou could also have used the fact that S² is homeomorphic to the 2-fold sum of S².
- copperx 11y agoI want to be like you when I grow up.
- hgibbs 11y agoI had a really bad day. Cheers man you have no idea how much that means to me.
- jbpetersen 11y agoCliff is a wonderful, wonderful human being. He once did a series of free physics classes for middle schoolers in his garage. Learned how to measure the speed of light from him.
- copperx 11y agoHe emits light?
- newman314 11y agoYou should also watch the related video about how he stores Klein bottles under his house. It's fascinating. https://www.youtube.com/watch?v=-k3mVnRlQLU https://www.youtube.com/watch?v=-k3mVnRlQLU
- te 11y agoIf someone does a remake of Back to the Future, Doc Brown should have a robotically-operated klein bottle warehouse under his house.
- jlebar 11y agoI bought a small klein bottle from him some time ago, and it was worth it just for the papers it came with. Hours of laughter... So good.
- tbabb 11y agoSometimes I wonder what future, more evolved humans will be like. What traits will be emphasized? I hope they look like this guy. Insatiably curious, extremely intelligent, endlessly productive, and effusively happy.
- gloves 11y agoNever seen this guy before, but I love him! So enthusiastic.