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Joe Harvey working on syntactic foam prior to fitting on Alvin.

Joe Harvey working on syntactic foam prior to fitting on Alvin.
Joe Harvey working on syntactic foam prior to fitting on Alvin.
Joe Harvey working on syntactic foam prior to fitting on Alvin.
Joe Harvey working on syntactic foam prior to fitting on Alvin.
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206588
Kleindinst, Thomas N.
Joe Harvey working on syntactic foam prior to fitting on Alvin.
Still Image
10/22/2012
graphics/Alvin_Foam_Mounting/_DSC1267.jpg
Image Of the Day caption:
Syntactic foam, show here being mounted on the new Alvin human-occupied vehicle, helps make marine submersibles buoyant, even at great depth. The foam is made up of small balloons of glass, mixed with epoxy into a matrix and formed into blocks. The glass microspheres are capable of withstanding pressures up to a depth of about 6,500 meters, which represents 95 percent of the ocean.
Photo by Tom Kleindinst
© Woods Hole Oceanographic Institution
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