5 ms·
Well, dragsters are laughably slow to accelerate if we're just talking about "acceleration world record" without qualifiers. (Assuming that "acceleration" here
by Sharlin 4y ago
Well, dragsters are laughably slow to accelerate if we're just talking about "acceleration world record" without qualifiers. (Assuming that "acceleration" here means "acceleration of a ground vehicle with a human driver" is just as arbitrary as "…of an electric ground vehicle…", after all. Actual acceleration world records of macroscopic objects are in the 10,000s of gs…)
- andbberger 4y agoi have an ultracentrifuge in lab that can do 100,000gs sustained for hours
- colordrops 4y agoWhat is it used for?
- throwaway4PP 4y agoCentrifuges are used for separation. An ultra is usually used for separating nominally-stable colloids (such as fine nanoparticle colloids), and miscible liquids where such high centrifugal force causes them to density separate.
- thelittleone 4y agoI was also curious and found this youtube [1]: Summary (found in video at 10:48) 1) separation of subcellular organelle (DNA/RNA) 2) extract solutions in biological fluids from aqueous to organic solvents 3) seperate lipid components 4) pelleting of ribosomes 5) pelleting of macromolecules [1] https://www.youtube.com/watch?v=lRT_8nFc2Tk https://www.youtube.com/watch?v=lRT_8nFc2Tk
- HeyLaughingBoy 4y agoHa. On a hunch I watched that video and hunch confirmed in the first second: I used to work for those guys, but not in the Centrifugation division :-)
- formerkrogemp 4y agoHow often do you just turn it on just to give it a spin? I'm not sure if be as productive in a lab with so much nice equipment, but I'm sure people get used to it.
- matheusmoreira 4y agoCnidocytes accelerate a microscopic needle at anywhere between 40,000 and 5,410,000 g. https://en.wikipedia.org/wiki/Cnidocyte https://en.wikipedia.org/wiki/Cnidocyte
- jeffbee 4y agoMilitary-funded experimental railguns are in the 10s of 1000s of gs. Are these the record-holders of whom you speak?
- kragen 4y agoI'm thinking probably alpha-particle decay exceeds that by a lot.
- jeffbee 4y agoI imagine that's why the other person qualified their remark as referring to "macroscopic" objects.
- kragen 4y agoHmm, good point. Maybe small objects not quite close enough to a hydrogen bomb to be vaporized by the flash, then?
- Sharlin 4y agoRelated: the "nuclear manhole cover" [1] (actually a 900 kg piece of armor plate) which may have accelerated to several times Earth's escape velocity over the course of a few meters (tens of millions of g's which is definitely impressive for such a heavy object). It was likely vaporized due to compressive heating before escaping Earth's atmosphere, however. (I'm rather amused by the idea that some manager type evidently thought that a hunk of steel might contain a nuclear explosion in what was in essence a very large cannon!) [1] https://en.wikipedia.org/wiki/Operation_Plumbbob#Missing_steel_bore_cap https://en.wikipedia.org/wiki/Operation_Plumbbob#Missing_ste...
- kragen 4y agoA big enough hunk of steel can certainly contain a nuclear explosion.
- deleted 4y ago[deleted]
- soheil 4y agoI think it's very clear this post is about cars.
- Sharlin 4y agoIt’s clear the article is about electric cars, so the GP’s point about ICE dragsters is irrelevant. (Note also that the HN title has been edited; the original title was just "Students break acceleration world record". In any case, dragsters are irrelevant here.)
- soheil 4y agoIt's very clear this article is about student made electric cars. Nitpick much? In any case, dragsters are much more relevant to the topic than random projectiles without any wheels or resemblance to a car.
- deleted 4y ago[deleted]