This is a cool yet somewhat creepy video. I tried to read up on Non-newtonian fluids but the explanations seemed like Greek to me! Ahem, any physics major who can explain this to me in simpler terms?
thanks for sharing. may natutunan akong bago. ok pala ang non-newtonian liquids :-) didn't know there was a classification like this before you mentioned it. I am sure you understood the concept na even before you asked. :-) ang understanding ko dito, lahat ng non-newtonian liquids, do not behave like the usual liquids. Unlike Newtonian liquids that "flow" because they have a constant "viscosity", non-newtonian liquids tend to behave like solids when there is pressure exerted on them - like when you punch a bowl of water and cornstarch or slap quick sand (shear thickening properties). But once the pressure is eased, like if you put a spoon in the cornstarch and water mixture or just walk lightly on the quicksand, liquid ulit siya. (http://en.wikipedia.org/wiki/Non-Newtonian_fluid)
Teka, bakit mo nga pala kailangan ito? What about non-newtonian liquids ang gusto mo further intindihin? Try ko tumulong if I get it right.
Hi Wikee. I understand how their qualities and how they behave. What I don't understand though is why the behave as such when subjected to sound waves. What is it in them that is affected by sound waves?
I have seen this video (and spent a good hour viewing similar ones hehehe) a couple of months ago but I got interested in it again recently because I showed it to one of the guys at Lemelson (its a department at the National Museum of American History where I'm doing my internship) and he thought that it's a cool thing to show the kids. But of course we'll have to make a connection between that and the concept of invention (the focus of the Lemelson)- we can't justify our activities based on coolness :)
I found an article online saying that researchers are developing a liquid armor using non-newtonian fluids, particularly the ones that have shear thickening qualities, like the cornstarch and water (the other type is a shear thinning fluid). The article was written in 2006 and I'm trying to find out if there are developments on the research.
These were played back in reverse if I'm not mistaken, which may explain the odd behavior. ergo this may be a hoax. (See research on cold fusion) But it seems possible if gravity would act funky... maybe in a parallel dimension. =)
Hi Dodge! We at first thought that they did some trick on it to make it behave that way but I've seen some other videos where people are talking while doing the experiment so it was captured in real time. We'll try it this week and maybe i'll upload the video :)
Hehe. Lemme know how it turns out. I viewed your video w/o sound, maybe thats why I didn't make the connection. I based my judgement on the movement of the fingers where I deemed it to be odd. Reminded me of that recent gamefly commercial.... ("never buy a bad game" is what i think its called). On the other hand, how is your stay in DC so far? Pretty good i guess?
my guess: sound is energy. it has the capacity to cause vibrations or kinetic energy. the way non-newtonian liquids don't "flow" evenly all throughout is causing discrepancies in the kinetic energy between molecules. the "pull" factor of the liquid in "rest" stage is strong. newtonian liquids would form rings when sound goes through them and at the edges, the waves would bounce back and the crash against the rings that are on an outward direction. in the non-newtonian liquid, the energy doesnt disperse in a ring. rather the pull and the push are going in different directions hence the monster. yung ang guess ko hahahahaha
thanks for sharing. may natutunan akong bago. ok pala ang non-newtonian liquids :-) didn't know there was a classification like this before you mentioned it. I am sure you understood the concept na even before you asked. :-) ang understanding ko dito, lahat ng non-newtonian liquids, do not behave like the usual liquids. Unlike Newtonian liquids that "flow" because they have a constant "viscosity", non-newtonian liquids tend to behave like solids when there is pressure exerted on them - like when you punch a bowl of water and cornstarch or slap quick sand (shear thickening properties). But once the pressure is eased, like if you put a spoon in the cornstarch and water mixture or just walk lightly on the quicksand, liquid ulit siya. (http://en.wikipedia.org/wiki/Non-Newtonian_fluid)
ReplyDeleteTeka, bakit mo nga pala kailangan ito? What about non-newtonian liquids ang gusto mo further intindihin? Try ko tumulong if I get it right.
Hi Wikee. I understand how their qualities and how they behave. What I don't understand though is why the behave as such when subjected to sound waves. What is it in them that is affected by sound waves?
ReplyDeleteI have seen this video (and spent a good hour viewing similar ones hehehe) a couple of months ago but I got interested in it again recently because I showed it to one of the guys at Lemelson (its a department at the National Museum of American History where I'm doing my internship) and he thought that it's a cool thing to show the kids. But of course we'll have to make a connection between that and the concept of invention (the focus of the Lemelson)- we can't justify our activities based on coolness :)
I found an article online saying that researchers are developing a liquid armor using non-newtonian fluids, particularly the ones that have shear thickening qualities, like the cornstarch and water (the other type is a shear thinning fluid). The article was written in 2006 and I'm trying to find out if there are developments on the research.
These were played back in reverse if I'm not mistaken, which may explain the odd behavior. ergo this may be a hoax. (See research on cold fusion) But it seems possible if gravity would act funky... maybe in a parallel dimension. =)
ReplyDeleteHi Dodge! We at first thought that they did some trick on it to make it behave that way but I've seen some other videos where people are talking while doing the experiment so it was captured in real time. We'll try it this week and maybe i'll upload the video :)
ReplyDeleteHehe. Lemme know how it turns out. I viewed your video w/o sound, maybe thats why I didn't make the connection. I based my judgement on the movement of the fingers where I deemed it to be odd. Reminded me of that recent gamefly commercial.... ("never buy a bad game" is what i think its called). On the other hand, how is your stay in DC so far? Pretty good i guess?
ReplyDeleteOh yes, loving DC and toally enjoying my internship! :)
ReplyDeletemy guess: sound is energy. it has the capacity to cause vibrations or kinetic energy. the way non-newtonian liquids don't "flow" evenly all throughout is causing discrepancies in the kinetic energy between molecules. the "pull" factor of the liquid in "rest" stage is strong. newtonian liquids would form rings when sound goes through them and at the edges, the waves would bounce back and the crash against the rings that are on an outward direction. in the non-newtonian liquid, the energy doesnt disperse in a ring. rather the pull and the push are going in different directions hence the monster. yung ang guess ko hahahahaha
ReplyDeleteWow, wikee. that sounds plausible and you wrote it in a very comprehensible way!
ReplyDeletehahaha parang kahit ako maniniwala na :-) joke lang :-)
ReplyDelete