Another fun trick is once you've filled the plastic with smoke and you have a circular hole, you can tap the plastic and little smoke rings will come out.

♫Don't go smoking waterfalls
Please stick to the grass and weed and pot that you're used to ♪

Interesting, but how is this in any way a waterfall?

Very interesting trick. I'm stumped to explain it. Anyone know about the physics at work here?

Every idea I've come up with so far has a flaw in it. Is the chamber filled with some type of gas that is significantly less dense than the smoke? Or perhaps this is a weird vacuum type effect?

Maybe that's some special paper and it releases heavier than air fumes? I am also curious as to how this was done.

The hippy liberal upside-down "Smoking Kills" sign draws the angry republican smoke to it, much in the same way VideoSift works in general.

** Spoiler warning **


** Spoiler warning **


Smoke is made from a lot of tiny particles, which are more dense than air but are dragged upwards by the heated air currents. (Warm air being less dense than cold air and so rising above it.)

The paper tube shelters some of the smoke from these air currents, allowing the air which it is suspended in to cool.

In the clip above you can see that some of the smoke is still rising from the lit end of the paper, but the plastic wrapper acts as a visual frame encouraging us to only focus on the smoke which has cooled sufficiently to travel down the tube.


Educational and an excuse to play with fire.
One for the science channel maybe?

Ahhh cigarettes and college... how I miss thee. Notably this is from Europe. You can tell be the very subtle warning labels.

btw you have to use the metallic paper that's in the pack for making the tube. it doesn't work with normal paper.

old

gourmetemu - We have those warning labels in Canada too.

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