Mr. Kirkman Demonstrates the Tyndall Effect

In this video, I demonstrate the Tyndall effect, named after the 19th century Irish physicist John Tyndall. The Tyndall effect is a phenomenon where light scatters through a heterogeneous mixture (like a colloid or suspension), but not a homogeneous mixture (usually called a solution). This happens because the larger particles in a colloid or suspension scatter and reflect light, causing the beam to be thick enough to be visible. This doesn't happen in a solution because the particles are too small and finely distributed, so the beam of light passes through the solution without being visible.

[@ESLMathTutor]

Great demonstration (a lot easier to understand than the textbook I was reading =D) Thank you =DD

[@Blank_Fool]

Hi Mr. Kirkman, hey everyone this is my science teacher.

[@AvaniMadne]

damn, dyou hhave insta ?????

[@niyatichaturvedi9903]

This was a very nice demonstration 👍👍

[@atharvana007]

been loking for one of these for a day thank you soo much!!

[@shivanshilaxmi4850]

I read tyndall effect in my book and i was very much eager to see it atcually. And this is AMAZING!! like seriously I can see what I read. Its real!!

[@GurpreetKaur-pt7hc]

Very nice demonstration

[@Thing5884]

Opinion was NOT required

[@RPLAsmodeus]

So when a sunbeam comes through the window and I see dust floating in the air, is that the Tyndall Effect?

[@mrformal737]

Yup :) The sunbeam is visible to us only because of the scattering of the sunlight by the dust particles.

[@mansibhagoria5155]

@@adira3839 but dust particles in air is a heterogenous mixture

[@wirebrushproductions1001]

Sorry, but no. The Tyndall Effect only applies to particles which are smaller than (about) a wavelength of light. Dust in a sunbeam is typically a good deal bigger, and what you are seeing is technically Mie scattering. A difference between the two is that, if you used a white light rather than a laser pointer, the beam would look bluish from the side. Mie scattering from water droplets is what allows you to see clouds, which appear white because all wavelengths are scattered equally.

[@wirebrushproductions1001]

@jeff idk Most of it is, and it doesn't produce the color shift of the Tyndall Effect. Note that "a sunbeam is visible because of scattering by colloids" is not the Tyndall Effect. Lots' of online sources get this wrong. And dust comes in all sizes. The smallest particles persist in the atmosphere due to their very low settling rates.

[@shau-w7o]

Yes

[@reenashiju4215]

Can we use other oil or only vegetable oil?

[@pangpuriyeah7121]

Thanks for the additional knowledge. I’m understanding it easily.😊😊

[@ayaankhurana1142]

Hello thanks u r helping us a lot in our tution

[@juliocesarcanulrangel5111]

good demonstration

[@sanskritid8590]

Thanks a lot for this💫

[@Crazias]

yo me, kolloid form aslında süspansiyon ve çözelti arasında bir geçiş alanı olarak görülebilir. Tyndall etkisi ise kompleks yapı olan süspansiyondan geçerken ışığın kolloide göre daha belirgin olduğunu görmeni sağlar ama unutma su gibi saf yapılar varken ışık daha az belirgindir ya da belirgin değildir.

[@AryanSingh-fj5jh]

😁😁 Thank you so much sir!

[@santoshkumarsamal601]

Thanks a lot sir

[@salsadellaandini5723]

thankyou so much for it sir. i'm from indonesia

[@Laotzu.Goldbug]

In terms of solution vs suspension vs colloid are there any actual chemical differences between them, in terms of how the molecules have attached to each other, or are they just physical differences arbitrary to our human scale?

[@ahmadal_shanqeety802]

Thank you ♡

[@Tetrapod1st]

I hate my school for forcing me to do this

[@ifeanyichukwu3644]

my school didnt even teach it to me but still tested me on it 😢

[@bugscodm7796]

same

[@Sarasaniy]

😂😂😂😂😂

[@ritz4220]

Thank you sir

[@j-lenapi5785]

Isn't vegetable oil a colloid?

[@ui2088]

Thank you so much.

[@AcmadOmar-mv2en]

Now i understand

[@ardhyaagrawal5477]

Thank you very much

[@venkatesh.v.venkat3714]

Thank you

[@ILLUSTRATOR_1127]

Can tyndall effect be applied on white smoke? can this be called Tyndall effect?

[@ranipandian2945]

Yes, Tyndall effect can also be observed in dust and smoke of the air

[@billbrown994]

But when water is in a clock like vessel to observe the light bend 15 degrees the ray is visible.

[@wirebrushproductions1001]

Only with impure water, which has a lot of particles in it. Even just distilled water will be hard to see. Deionized water is almost invisible.

[@Vegitobluuuuu]

Learned this from detective Conan

[@sagarmeti9813]

Super

[@oliviailuki5522]

THIS MY TEACHER YALLLLLL

[@rehamsaid9322]

Thx

[@idontknowwhatido3972]

I prefer human liquified lard from problem attitude student as a demonstration in my school. Works perfectly and I restore order.

[@Imherelegally0990]

you made this easy

[@n.ramthilak4475]

No he made it sus sy

[@motivationbhavik3414]

I am from India 🇮🇳

[@wirebrushproductions1001]

And this is generally wrong. A "solution" also scatters light due to Rayleigh scattering by the individual molecules which make up air. However, it's so weak that such scattering is almost impossible to see with the naked eye. Direct observation of Rayleigh scattering was first done in the 70s, using lasers, for high intensity, and photomultiplier tubes, for sensitivity in detecting scattering. It's perfectly possible to have colloids with particle sizes small enough to produce Rayleigh scattering. A suspension, rather than a colloid, will generally not produce either Rayleigh or Tyndall scattering, since if the particles are big enough to settle out of suspension, they are too big to produce Tyndall or Rayleigh scattering.

[@vishnugb9326]

I am from INDIA

[@Thing5884]

Stop spam calling me I am NOT giving you my bank information

[@anup849]

2:19 second pe aher lawa

[@dewaagung]

*Detective Conan brought me here.*

[@n.ramthilak4475]

Sustances sustent susute

[@datboikevin]

Tiktok brought me here

[@pbetftdi]

Too much for my little brain.

[@onyxgilbert6579]

Anyone from the love is war ova??

[@shinigamieditzz]

Kaguya sama?

[@m7md-CIA]

delete the video

[@xyrene7189]

What is your problem lol

[@itsanuragst.xaviersramnaga1240]

E

[@santoshkumarsamal601]

What's ur problem

[@n.ramthilak4475]

Delete amog us