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Science Experiments / How can I make a cloud in a bottle without smoke?
« on: 07/02/2011 10:51:43 »
To add to daveshorts.
You have to relieve the pressure suddenly.
I used to build “rockets” as a kid by pressurising 2l soda bottles with about 30% water inside.
When it exceeds a certain pressure, the valve would be blown out forcing the water out and launching the bottle into the sky. The water was just enhanced the effect of Newton’s law on action/re-action.
What you would end up with is a “cloud” on the inside.
You do not need to add the water however, as normal atmospheric air should have enough moisture to make you the cloud.
Just figure out a way to safely relieve the pressure in a few seconds and you will have your cloud.
You have to relieve the pressure suddenly.
I used to build “rockets” as a kid by pressurising 2l soda bottles with about 30% water inside.
When it exceeds a certain pressure, the valve would be blown out forcing the water out and launching the bottle into the sky. The water was just enhanced the effect of Newton’s law on action/re-action.
What you would end up with is a “cloud” on the inside.
You do not need to add the water however, as normal atmospheric air should have enough moisture to make you the cloud.
Just figure out a way to safely relieve the pressure in a few seconds and you will have your cloud.