Density Diver A Cartesian Diver Exhibit

Density DiverDensity Diver A Cartesian Diver Exhibit A Cartesian Diver Exhibit

Ashley, Marina, Devin, Ashley, Marina, Devin, Marie, Samantha, Michelle, Marie, Samantha, Michelle,

HollyHolly

Stow Girls Get SET Team

Summer 2002


Summer 2002

ContentsContents

Why Cartesian Divers?Why Cartesian Divers? Construction of a Simple DiverConstruction of a Simple Diver How Does a Cartesian Diver Work?How Does a Cartesian Diver Work? What Scientific Properties Does This Teach?What Scientific Properties Does This Teach? Evolution of Our DesignEvolution of Our Design Cartesian Diver PrototypesCartesian Diver Prototypes Final ExhibitFinal Exhibit


Summer 2002

Why Cartesian Divers?Why Cartesian Divers?

Subject of density found interestingSubject of density found interesting Evolved from previous ideaEvolved from previous idea Needed an exhibit for the water roomNeeded an exhibit for the water room Subject was well known by groupSubject was well known by group


Summer 2002

Construction of a Simple Construction of a Simple DiverDiver

Fill a bottle with waterFill a bottle with water Put a partially filled test tube upside Put a partially filled test tube upside

down in the bottledown in the bottle Make sure it floats just above the Make sure it floats just above the

waterwater Seal the bottle and apply pressure Seal the bottle and apply pressure

More water goes into the diver so it is More water goes into the diver so it is more dense and goes downmore dense and goes down

Now you have a Cartesian diverNow you have a Cartesian diver


Summer 2002

How Does a Cartesian How Does a Cartesian Diver Work? Diver Work?

Diver floats because it is less dense Diver floats because it is less dense than waterthan water

Pressure is applied Pressure is applied Diver becomes more dense than Diver becomes more dense than

waterwater Diver floats to top when pressure is Diver floats to top when pressure is

releasedreleased

That’s a Cartesian Diver!That’s a Cartesian Diver!


Summer 2002

Cartesian Diver PicturesCartesian Diver Pictures


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The Scientific Properties of The Scientific Properties of Our Density DiverOur Density Diver

DensityDensity Density is the amount of mass in a Density is the amount of mass in a

certain amount of volumecertain amount of volume PressurePressure

““The application of continuous force by The application of continuous force by one body on another.”one body on another.”

Simple Machines (Levers and Simple Machines (Levers and Pistons)Pistons)


Summer 2002

Stomp diverStomp diver Sit-down diverSit-down diver Push-piston diverPush-piston diver Side-Lever diverSide-Lever diver Final design: Pull-Final design: Pull-

Rope diverRope diver

Evolution of the Design Evolution of the Design


Summer 2002

Final DesignFinal Design


Summer 2002

Cartesian Diver PrototypesCartesian Diver Prototypes


Summer 2002

Final ExhibitFinal Exhibit

Four foot high acrylic tubeFour foot high acrylic tube Lever systemLever system Wooden base/boxWooden base/box


Summer 2002

PartsParts One 4’ X 12 ½” acrylic tubeOne 4’ X 12 ½” acrylic tube One clear cast acrylic sheet 1.25” One clear cast acrylic sheet 1.25” thick,12” X 24”thick,12” X 24”

One natural latex rubber 1/8” One natural latex rubber 1/8” thick,24” X 24”, 38A durometerthick,24” X 24”, 38A durometer

Screws, nuts, and boltsScrews, nuts, and bolts Final Exhibit built Final Exhibit built


Summer 2002

Using the JigsawUsing the Jigsaw


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Finding An AdhesiveFinding An Adhesive


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Building the Diver BaseBuilding the Diver Base


Summer 2002

Building the Lever and Building the Lever and StandStand


Summer 2002

Future of Our ExhibitFuture of Our Exhibit

Transported to the Acton Science Transported to the Acton Science MuseumMuseum

Bolted to the wallBolted to the wall Spring attached from the lever to Spring attached from the lever to

the ceilingthe ceiling Test other rubber membranesTest other rubber membranes Colorful Divers Colorful Divers


Summer 2002

Thanks!Thanks! Bob Lind and Kathy Bufalo Bob Lind and Kathy Bufalo

for teaching us all about wood workingfor teaching us all about wood working

Jim Hoffman, Vincent Miraglia and Mike Jim Hoffman, Vincent Miraglia and Mike for solving machining and general problemsfor solving machining and general problems

Colby Shop - Larry, Dennis and ScottColby Shop - Larry, Dennis and Scott for putting our acrylic job in front of others for putting our acrylic job in front of others

in the machine shopin the machine shop


Summer 2002

Thanks!Thanks! Haruna Tada, Peter Wong and Ioannis Haruna Tada, Peter Wong and Ioannis

MiaoulisMiaoulis For offering guidance and supportFor offering guidance and support

Lisa Franz, and Denise LeblancLisa Franz, and Denise Leblanc For motivational support For motivational support


Summer 2002

Thanks!Thanks!

Debbie BarrDebbie Barr

For motivational support, organizational For motivational support, organizational efforts, and fun activitiesefforts, and fun activities

Geoff NelsonGeoff Nelson

For being a highly enthusiastic and For being a highly enthusiastic and critical clientcritical client


Summer 2002

Any Questions?Any Questions?

Documents

Density Diver A Cartesian Diver Exhibit