Belousov Zhabotinsky reaction 8 x normal speed

The famous Belousov Zhabotinsky chemical reaction in a petri dish. The action is speeded up 8 x from real life. Pacemaker nucleation sites emit circular waves. Breaking the wavefront with a wire triggers pairs of spiral defects which emit more closely spaced waves which eventually fill the container.

Chemistry by Michael Rogers, camera by Stephen Morris.

Category:

Science & Technology

Tags:

• Belousov
• Zhabotinsky
• chemistry
• experiment
• reaction
• pattern
• formation
• waves
• nonlinear
• physics
• BZ

[melukosi]

Is this a petri dish or a beaker? I ask because I wanted to know how much of the solution was actually used to effectively see the spiraling oscillations. I would think a petri dish with a very small amount, but I've done all my reactions in about 500 mL quantities and would need to scale them down dramatically.

[smorris123]

@melukosi It is a petri dish. The solution must be thin to avoid convection effects. Just a few mm deep at most.

[chandin69]

could be a bit off topic but would this have anything common with the double slit experiment?

(interms of "particle" electrons behaving as waves, which is a macroscopic phenomenon)?

[smorris123]

@chandin69 This has nothing whatever to do with the double slit experiment. Not everything cool in physics (or chemistry) is quantum.

[odysseus9672]

Is it possible to get a single spiral going one direction without another spiral nearby spinning the other way?

[smorris123]

@odysseus9672 Yes. People use lasers and other tricks to make single spirals.

[smorris123]

@PaulskiMusic Simple: I used iMovie to speed up the video!

[chandin69]

@smorris123 i knew that what i meant was the individual particles bahaving as one entity looks like a wave phenomenon :)

[teb0atoz]

@chandin69 The constructive and distructive interferance of a double slit is due to the dual nature of a PHOTON.

[nickharvey7]

@dinotles The theory itself could be called a conjecture, but it does not sound as nice! Heisenberg’s Uncertainty Principle ∆×∆p×≥h/4π of position and momentum and between energy and time ∆E ∆t ≥ h/2π can be used as postulates, I can think of no better thing to base a quantum theory on!

[dinotles]

@nickharvey7 well... the problem with those postulates is... That they are nice ideas, but neither of them are self-evident. Of course... Feel free to make something up, string theory is also based on lots of stuff that has not been proven. But you should not call it postulates, "conjectures" is the correct term.

[ericajjful]

very interesting video thanks

[jorgeramrz]

is this experiment dangerous in any way?

[nickharvey7]

Nice video!

This is an invitation to everyone or anyone to see an artist theory on the physics of light and time!

This theory is based on two postulates

1. Is that the quantum wave particle function Ψ represents the forward passage of time ∆E ∆t ≥ h/2π itself

2. Is that Heisenberg’s Uncertainty Principle ∆×∆p×≥h/4π that is formed by the w- function is the same uncertainty we have with any future event that we can interact with turning the possible into the actual!

[SepradistPhantom]

@smorris123 Well i wouldn't say it has nothing to do with it, they aren't directly related but they do demonstrate some of the same effects. For instance the fact that when wavefronts meet they cancel each other out.