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Must be really fun to crash a boat into the beach.
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Sep 27, 2018 02:22
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aphid_licker posted:Wonder how much they paid the guy who had to figure out how to place all the gazillion doohickeys so they would properly counterbalance each other Presumably they placed all the gazillion doohickeys first, then added weights until it was balanced. There's going to have to be some kind of weight trimming mechanism in it anyway to account for slight imbalances where a bundle of wire didn't run exactly as it did in the CAD program or whatever. Also any modern CAD program like SolidWorks can take your model and (assuming you modeled everything accurately) in like 2 seconds tell you where the center of mass is and what you need to do to move it to any other location.
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Sep 27, 2018 02:40
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What you have to watch out for is the (fictitious) centrifugal force deforming the structure or shifting components enough to imbalance it a significant amount. Accounting for that is harder than statically balancing the system.
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Sep 27, 2018 02:51
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Sagebrush posted:
(you did not model everything accurately)
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Sep 27, 2018 03:52
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I'm sure the factory has something akin to (and way more expensive than) a wheel balancer. Put the ring on the machine, spin it up to figure out where weights need to be added.
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Sep 27, 2018 03:55
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Cojawfee posted:I'm sure the factory has something akin to (and way more expensive than) a wheel balancer. Put the ring on the machine, spin it up to figure out where weights need to be added. Did someone get mad at you for being correct about Celsius?
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Sep 27, 2018 03:57
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is that even supposed to be a burn? because it's true
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Sep 27, 2018 03:58
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The Lone Badger posted:(you did not model everything accurately) I really need to make this into a sign and put it up both in the CAD lab and next to every piece of CNC equipment we've got
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Sep 27, 2018 04:00
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GotLag posted:Did someone get mad at you for being correct about Celsius? I said I liked fahrenheit for weather temperature and preferred celsius/kelvin for anything else and people got mad.
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Sep 27, 2018 04:02
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Cojawfee posted:I said I liked fahrenheit for weather temperature and preferred celsius/kelvin for anything else and people got mad. Oh, you're one of those morons
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Sep 27, 2018 04:11
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I measure my speed in km/h or mph, which ever is faster
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Sep 27, 2018 04:14
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it's okay to prefer customary regional poo poo units on a personal level, but lol at how expensive spacecraft have been lost because of stupid american engineering firms using dumb nonstandard American regional units
BattleMaster fucked around with this message at 04:19 on Sep 27, 2018 |
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Sep 27, 2018 04:15
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yes I am okay saying that poo poo is nonstandard and regional when only two countries in the world officially use them
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Sep 27, 2018 04:16
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I only tip for well done steaks in Celsius if the waiter is wearing his PPE
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Sep 27, 2018 04:18
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counterpoint, a cook wearing PPE is one of the few reasons i would not eat a steak
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Sep 27, 2018 04:36
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A new grilling technique where you hold the steak and your sous-chef just fukken blasts you with a flamethrower
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Sep 27, 2018 05:38
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Phy posted:A new grilling technique where you hold the steak and your sous-chef just fukken blasts you with a flamethrower Man, can't remember the last time I went to a Sizzler.
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Sep 27, 2018 05:47
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Nenonen posted:In all accident photos that is where loose metal objects want to go, so ummm I think I'll wait outside the room. the loose metal objects -- such as the little wheelie table in that video -- are perfectly safe since it's a CT scan, not a MRI. CT scan: spins real fast and shoots x-rays through you, and then uses computer magic to put those 360 degree measurements into a picture. Sometimes found as a combination CT/PET scan machine. (PET: drink this radioactive milkshake so we can light up your insides.) MRI machine: uses superconductors, liquid helium, ferocious magnetic fields, quantum mechanics, and loving magic to make pictures. The one where you have to worry about ferrous objects being picked up and thrown across the room, or just conductive things long enough to develop eddy currents.
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Sep 27, 2018 06:08
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my favorite part of MRI machines is that they are literally the same thing as an NMR spectrometer, but they changed the name because people are stupid panicky dumbasses who wouldn't get into a machine called a NUCLEAR anything 
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Sep 27, 2018 07:12
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At least you don't have to dip the patient into carbon tet.
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Sep 27, 2018 07:31
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Rankine > Celsius
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Sep 27, 2018 07:35
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Klyith posted:MRI machine: It gets even cooler an MRI generates a MASSIVE magnetic field that lines up every single atom in your body, rapidly turns it off so that as your atoms relax back into a relaxed orientation the aerial you're lying on top off can pick up the radio waves that the your body emits as those atoms realign. It then does that rapidly and repeatedly to generate a picture about rather than just measures density, depending on how you interperate and interrogate the data lets you get ab idea of what the composition and where it is in the body to get diagnostic data.
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Sep 27, 2018 07:40
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Phy posted:A new grilling technique where you hold the steak and your sous-chef just fukken blasts you with a flamethrower brb making that a camp at burning man
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Sep 27, 2018 07:42
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PET scans utilise antimatter.
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Sep 27, 2018 07:50
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Grognan posted:brb making that a camp at burning man
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Sep 27, 2018 08:32
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Speaking of scans, I remember my dad telling me about a fluoroscope that would allow you to see your feet inside your shoes. Shoe-Fitting Fluoroscope The running store I went to the other day had a system that built a 3D model of your feet to measure width, length, arch height, and so forth: Fit ID. Foot-O-Scope is probably the better name, though I think I'll take lasers over X-rays as a measurement tool.
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Sep 27, 2018 08:38
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Sagebrush posted:I really need to make this into a sign and put it up both in the CAD lab and next to every piece of CNC equipment we've got We used to have a banner over the editing bays that read: "Don't worry, we'll fix it in Post!..Oh wait, this IS Post"
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Sep 27, 2018 10:33
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Sagebrush posted:Presumably they placed all the gazillion doohickeys first, then added weights until it was balanced. There's going to have to be some kind of weight trimming mechanism in it anyway to account for slight imbalances where a bundle of wire didn't run exactly as it did in the CAD program or whatever. That's neato and I did not know that, thanks!
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Sep 27, 2018 12:20
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jemand posted:Preparing for some ship breaking: https://www.youtube.com/watch?v=5kDbwE7mFck Pretty neat video, but they kinda got lamer as they went to number 5. Like if they'd reversed them it would have been cooler I think.
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Sep 27, 2018 13:16
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wesleywillis posted:Pretty neat video, but they kinda got lamer as they went to number 5. Like if they'd reversed them it would have been cooler I think. lol #4 was just a really, really poorly done editing job
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Sep 27, 2018 13:30
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wesleywillis posted:Pretty neat video, but they kinda got lamer as they went to number 5. Like if they'd reversed them it would have been cooler I think. I groaned audibly when I started seeing hardhats and safety equipment in later clips.
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Sep 27, 2018 13:39
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Klyith posted:the loose metal objects -- such as the little wheelie table in that video -- are perfectly safe since it's a CT scan, not a MRI. Cool, thanks for the explanation. I didn't know there was a difference.
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Sep 27, 2018 13:57
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Nenonen posted:Cool, thanks for the explanation. I didn't know there was a difference. Amazingly, even though "nuclear" is in the name, an MRI exposes you to zero radiation. A CAT scan, on the other hand, exposes you to between 2 and 16 mSv of radiation. A chest x-ray; 0.2 mSv. That means a CAT scan is 10x more radiation than a chest x-ray. PET/CAT is usually in the 25 mSv.
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Sep 27, 2018 14:26
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Phy posted:A new grilling technique where you hold the steak and your sous-chef just fukken blasts you with a flamethrower That sounds fun as long as you get to wear a fire entry suit.
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Sep 27, 2018 15:21
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Trambopaline posted:It gets even cooler an MRI generates a MASSIVE magnetic field that lines up every single atom in your body, rapidly turns it off so that as your atoms relax back into a relaxed orientation the aerial you're lying on top off can pick up the radio waves that the your body emits as those atoms realign. It then does that rapidly and repeatedly to generate a picture about rather than just measures density, depending on how you interperate and interrogate the data lets you get ab idea of what the composition and where it is in the body to get diagnostic data. That sounds fatal.
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Sep 27, 2018 15:29
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Jet Jaguar posted:Speaking of scans, I remember my dad telling me about a fluoroscope that would allow you to see your feet inside your shoes. Shoe-Fitting Fluoroscope  a lot of shoe salesmen in the 1940s and 50s developed weird skin cancers on their hands from using these machines all day long Fancy_Breakfast posted:That sounds fatal. Turns out it isn't
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Sep 27, 2018 16:07
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Kafouille posted:That sounds fun as long as you get to wear a fire entry suit. Of course The only question remaining is, what nationality do we present the food as so that it sounds funniest My vote is german, "rindersteak mit flammenwerfer". starts off slow but ends strongly
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Sep 27, 2018 16:31
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Sagebrush posted:
Now I need to find out the history of how the initial tests were performed and they came to create this piece of equipment, Imagine the first human to get CT scanned. Probably a lot less interesting than I imagine.
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Sep 27, 2018 16:40
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aphid_licker posted:Wonder how much they paid the guy who had to figure out how to place all the gazillion doohickeys so they would properly counterbalance each other https://m.youtube.com/watch?v=xyg_v7Vxo4A
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Sep 27, 2018 16:50
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Sagebrush posted:
Also eye cancer because it was just shooting xrays into their face.
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Sep 27, 2018 17:12
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