How do you make a simple Cartesian diver?

How does the Cartesian diver works?

The Cartesian diver, consisting of a plastic medicine dropper and a metal hex nut, will float or sink in the bottle of water depending on the water level in the bulb of the dropper. … The more water that is inside the diver, the less buoyant it becomes and the diver sinks.

What is meant by Cartesian diver?

: a small hollow glass figure placed in a vessel of water that has an elastic cover so arranged that by an increase of pressure the water can be forced into the figure producing the effects of suspension, sinking, and floating as the pressure varies.

What gas law is the Cartesian Diver?

Pascal’s law states that a pressure applied at any point on a confined incompressible fluid is transmitted equally throughout the fluid. When the bottle is pressurized (squeezed) the pressure within the entire bottle and Cartesian diver is increased.

Why is my Cartesian diver not working?

Troubleshoot the diver if it is not working.

It should just barely float, with the air bubble (the top of the dropper, the bend in the straw, etc.) just above the water. Make sure that the bottom is sealed for homemade divers, and add a little more or less water to the eyedropper to get the right balance.

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How do you make a jellyfish diver in a bottle?

Squeeze the bottle hard and your jellyfish will sink quickly. Similarly, your jellyfish will float up when you let go. When your jellyfish is moving up, try squeezing and releasing the bottle over and over again. Your jellyfish will rotate and dance as it moves back up the bottle!

How do you make a flinker?


  1. Start by filling the container with water.
  2. Place a foam packing peanut in the water. …
  3. Place a paperclip in the water. …
  4. How can you combine these objects to make the peanut flink (so it doesn’t float or sink)?
  5. Try attaching paperclips to your peanut and/or changing the shape of the peanut.

Will a pen cap float?

Like a pen,as it has a plastic body and a refill in it,its weight is more as compared to that of cap which has air pockets and its is lighter than water. 3. Thus , a pen cap floats but the pen sinks in water.