It's better to use graphite, reduced fiction.

What fluid were you using?

Some of the motion appears to be random waves that are passing by that affect all particles the same way. Perhaps the particle is so big that when it hits a water molecule that energy is transferred all the way to another distant particle.

size of beads around 1000nm and water molecule 0.2 nm only. It is tooooo huge difference to see any movements of the beads. 5000 times linear size and 125 Billions times mass (volume) difference. I dont believe in this explanation. It like 0.000032 g piece hits elephant 4000 kg.)))

mehmet uğur

Wow

so imagine mr Perrin if my memory serves measuring brownian motion when he did like in 1900

Frankly at that low a reynolds number I don't believe the beads are moving through the water pushed by ricocheting water molecules but moving with the water so that it is the water that is moving with high viscosity in bulk laminar flow. The question then is WHY the WATER is moving ? The beads carried along with it . My apologies to Doctor Einstein of course .

Thanks maybe the first time I have observed Brownian motion thru a microscope

you should have stained them my friend :)

Leaf mosaic virus tobbaco leaf disease and coronavirus in microscope

wow that was incredible! Amazing !

Thank you for showing this! I replicated this with milk globules and it looks great (see my video).

If we're being pedantic about correct pronounciation of Χ it's definitely not /ˈkaɪ/, but rather [kʰ]. As in loch.

"Please pronounce it correctly" - pronounces "chee-square" as "kai square"...

Who is here because of their science lesson?

hi great video! thanks a lot... can you please specify what are the beeds and what is the liquid?

😍😍😍

What is the size of microbead, and What's the magnification of the microscope?

Hello. Do you mind if I use a segment of this video in an explainer video I am making about brownian motion? I will of course credit you

wow u look like MAMUN

Nice explanation

You need to make it more dramatic. "Please say it correctly or I will hunt you down and make you pay!!!" ... Oh and brilliant youtube.

Who came here because of feynman lectures?

a

Please don't pronounce "χ" as "kai", it's wrong! The actual sound is "chee", where the initial letter sounds more like the "h" in "horse", for example.

I can see 'movement' Beautiful! Brownian motion is Real!! Thanks a lot!!!

Excellent video. It helped me a lot

Since the motion is extremely fast. What is your frames per second of your camera?

Why is the capacitor called a mass in one video, and called a spring in another video? Make up your mind!

FINALLY a video that shows some experiment preparation and tips. It would be awesome if you also gave the brand of the beads / a link to buy them, and gave the result analysis in the video as well with the predicted water molecule mass (just plug displacement into formula, no formula derivation).

Excellent visualizations showing the danger of localized minima on the error surface. I used a levenberg marquardt / gaussian model to help explain chemical reactions - but that was over 25 years ago :)

this is wonderful !!! I have been always having difficulty understanding filters , resonant systems , would you please add more videos for capacitors and inductors

Hi, please how can I fit my curve using Levenberg-Marquardt Method using curveExpert software?

Excellent explanations. Thanks!

Hello. Thanks for your video. What total magnification did you use to see the Brownian motion? How can you be sure that those are microbeads? I am looking at having students take samples from a local stormwater outlet to ascertain if there are microbeads present - do you have any thoughts on that? Thanks.

Wonderful visualizations