jmacuk

I like your method of showing flow rate as mass/time: too often my students confuse that with flow speed. DanM17 is correct that there are limits to modeling electric current with flowing water in tubes. Did you test with minimal length tubing, that is, straight drop with no loops? Try the same length of tube stretched straight, at various angles, to create different heights. Also, if practical, rig multiple reservoirs with different diameter tubes: if you can achieve laminar flow, it will model different resistances. If not, you'll have a great counterintuitive model to puzzle your students with : )

So where is Daddy's X-wing?Awesome work!

Very nice! And don't forget how to remove a cork from a wine bottle with a plastic bag!

You learn something new every day : )

This looks very cool! Anyone want to try making a simulated Chladni Plate with this?

That is a great solution to the flaming exhaust pillar! Never would have thought of using otton that way. Awesome work!

Brilliantly simple idea!

clever use of atmospheric pressure! Basically a big suction cup.

If you paint the inside black or line it with black construction paper, you can improve the brightness and clarity of the image being projected.

very cool!

THANK YOU FOR POSTING THIS! My engineering kids need to see that Murphy's law happens! The reason there is an engineering design process that cycles around is because things hardly ever work as intended the first time. Or second, etc.I wish more people would post Destructables (thanks Scaredy Cat!), showing all the ways that projects can go south or be FUBAR. Unless you "really" want to make bacon.PS. As long as you're reading labels more carefully now, double-check whether your garage is coatedin in carcinogens: you may need to powerwash or wipe down all surfaces.

Sweet! Nice work, well focused directions.

Nicely done! Can see this as a great project for either astronomy or photography classes!

you go straight ahead, of course!

Great job! You could go into business making those.

I'm trying to add this to one of my collections but don't see an option to do so. Is there some restriction on this instructable?

nice!

elegant solution!

good point

I wonder what twisted genius came up with it?

Nice! I'm going to add this to my engineering class - after we file the points off.

A further thought, though not as green, is to line the bottle, or maybe even replace the bottle, with a used plastic bag? Then you could dispose of the messy contents and replace with a new bag & mixture.

I think I now know how I am going to ignite my 2L flour-bottle rocket!

nice variation!