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Ferrofluid display cell Bluetooth speaker

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41–50 of 66 posts

Re: Ferrofluid display cell Bluetooth speaker

#41
post #25
post #18

Earlier quoted context omitted.

It's commonly suspended in Kerosene, so maybe that's what they meant? Bit of a long stretch though.

I guess it would be easy to build a pump with it that has no moving parts.

Self cleaning and self lubricating as well as kerosene is a solvent and lubricant.

Re: Ferrofluid display cell Bluetooth speaker

#42

Earlier quoted context omitted.

NileRed is one of my favourite chemistry YouTubers, along with NurdRage. There's so much great content on his channels.

When I originally found his channel I thought he might be too young to take any sort of seriously, but he handles being that young pretty well. There isn’t a lot of YouTube nonsense, or begging for subscribers, or jokes that for extremely flat. A model for others I think. Really well done. Although... Explosions and Fire is peak YouTube Chemistry to me!

Young? He's 29? Were you mistaken or are you implying that 29 is pretty young to be creating self-aware youtube content.

Re: Ferrofluid display cell Bluetooth speaker

#43

Earlier quoted context omitted.

When I originally found his channel I thought he might be too young to take any sort of seriously, but he handles being that young pretty well. There isn’t a lot of YouTube nonsense, or begging for subscribers, or jokes that for extremely flat. A model for others I think. Really well done. Although... Explosions and Fire is peak YouTube Chemistry to me!

Young? He's 29? Were you mistaken or are you implying that 29 is pretty young to be creating self-aware youtube content.

He has videos dating 7 years back. I thought he looked young for what he was doing. Did not see him until quite a bit into the video and it was not what I expected. Really knowledgeable, a lot of equipment and a really good setup for someone so young. There is also the fact that there is no big source of income that I could easily spot.

Re: Ferrofluid display cell Bluetooth speaker

#44

Reminds me a lot of Winamp that popularised such kind of music visualisations.

In the 90's and 2000's, car radios and the like had some really interesting visualizations going on. The market for radios and music installations that aren't high-end seems to have pretty much collapsed thanks to mp3 players and bluetooth speakers though. That said, there's still things like portable karaoke speakers that still come with the bells and whistles.

Funnily enough given your user name, Cthulu was a popular visualiser back in the DOS days of the 90s.

https://en.m.wikipedia.org/wiki/Cthugha_(software)

Edit: it was cthugha... my old brain is failing me :)

Re: Ferrofluid display cell Bluetooth speaker

#45

Earlier quoted context omitted.

I can't see the video, but if it's the same idea could you give some details on what you used as a suspension fluid and how you dealt with the smearing on the container?

Give this link a go: https://drive.google.com/file/d/1iqUnmD79tMlswlQQhhId1cuW6DX...

Really cool. With something like this I can't help but imagine combining it with real time signal processing/filtering. Where the visualization can be attached clearly to different components of the music. A vocal filter, melody filter, etc etc. I'm always dissatisfied with how visualizers don't really cue off auditor-ily obvious parts of songs.

Re: Ferrofluid display cell Bluetooth speaker

#46

Amusingly I made a prototype of something similar 4 years ago during university: https://www.facebook.com/1764751847/videos/10202928199083698... It was done to promote the use of Ferrofluid for DataVis rather than a consumer product.

That's pretty awesome - it picks up on way more signal detail than the top project (which is also nonetheless cool).

Re: Ferrofluid display cell Bluetooth speaker

#47
post #14

I experimented with making a clock using ferrofluid previously. I was inspired by this clock [0] but put off by the price tag. Generally the main issues I found were that it degraded over time and I had real trouble with ferrofluid smearing on the container. Will have to try again now! [0]: https://www.thisiswhyimbroke.com/ferrofluid-clock/

That is so cool But 12 grand!? Wow.

They must read HN, because they've reduced it to the low, low price of only $8k now.

Re: Ferrofluid display cell Bluetooth speaker

#48

For anyone as fascinated with this substance as I am, here [0] is a YouTube video of someone making it 'from scratch'. It's a very detailed explanation, and includes some comparisons of the outcome VS commercial ferro fluids. [0] https://m.youtube.com/watch?v=6L8yUY-doNc

There's an interactive exhibit in the lobby of the New York Hall of Science that lets you deform a blob of this shiny goo. It's a lot of fun.

Thought of exactly the same exhibit -- love that thing! Worth a stop into NYHS to play with it. I immediately wanted to make one and I'm psyched to see on HN. Evidently it originally had buttons to control the charge, then curators upgraded it with the more tactile wheel controllers.

https://www.sciartmagazine.com/spotlight-michael-flynn-and-f...

Re: Ferrofluid display cell Bluetooth speaker

#49

Amusingly I made a prototype of something similar 4 years ago during university: https://www.facebook.com/1764751847/videos/10202928199083698... It was done to promote the use of Ferrofluid for DataVis rather than a consumer product.

Do you know how well it works if the speaker is on top of the bottle, pointed downward at the fluid?

Re: Ferrofluid display cell Bluetooth speaker

#50
post #18

> This is called ferrofluid. It is a material developed by NASA in the 1960s. It was used as both spacecraft fuel and sealing material. I'm a bit curious how ferrofluid was used as a fuel.

It's commonly suspended in Kerosene, so maybe that's what they meant? Bit of a long stretch though.

This says it was an idea to pull rocket fuel to the right end of the tank without gravity

https://www.nasa.gov/feature/glenn/2021/history/novel-rocket...

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