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2. BoPET - Wikipedia

   en.wikipedia.org/wiki/BoPET

   Metallized boPET film, 32 layers of ~14 μm thickness each. BoPET (biaxially oriented polyethylene terephthalate) is a polyester film made from stretched polyethylene terephthalate (PET) and is used for its high tensile strength, [1] chemical stability, [1] dimensional stability, [2] transparency [1] reflectivity, and electrical insulation. [1]

3. Carousel memory - Wikipedia

   en.wikipedia.org/wiki/Carousel_memory

   The magnetic tape is a 5/8-inch (1.6 cm) wide and 0.05 mm thick Mylar 3M Co type 188. [3]: 11 The storage density is specified to 8 bits/mm, [3]: 4 and the access head is capable of simultaneous read/write operations. [3]: 3 The power requirement is three-phase 380 volts 50 Hz with 300 W when in standby and 750 W when active. Signaling for data ...

4. Space blanket - Wikipedia

   en.wikipedia.org/wiki/Space_blanket

   layering materials of emergency blanket 32 layers are 0.45mm thick. First developed by NASA ' s Marshall Space Flight Center in 1964 for the US space program, [2] [3] [4] the material comprises a thin sheet of plastic (often PET film) that is coated with a metallic, reflecting agent, making it metallized polyethylene terephthalate (MPET) that is usually gold or silver in color, which reflects ...

5. Dual-Axis Radiographic Hydrodynamic Test Facility - Wikipedia

   en.wikipedia.org/wiki/Dual-Axis_Radiographic...

   The maximum magnetic field strength (saturation point) in metglas is five times higher than in ferrite. The magnetic tape was insulated by thin layers of mylar and wound up into a roll of 20,000 turns to make mammoth six-foot-diameter cores, each four inches wide and weighing more than one and a half tons. Four cores fit into each induction cell.

6. Rolling (metalworking) - Wikipedia

   en.wikipedia.org/wiki/Rolling_(metalworking)

   Beam mills, three-high, rolls from 28 to 36 inches in diameter, for the production of heavy beams and channels 12 inches and over. Rail mills with rolls from 26 to 40 inches in diameter. Shape mills with rolls from 20 to 26 inches in diameter, for smaller sizes of beams and channels and other structural shapes.

7. Reel-to-reel audio tape recording - Wikipedia

   en.wikipedia.org/wiki/Reel-to-reel_audio_tape...

   7-inch reel of 1 ⁄ 4-inch-wide (6.4 mm) recording tape, typical of non-professional use in the 1950s–70s. Studios generally used 10 1 ⁄ 2 inch reels on PET film backings. Inexpensive reel-to-reel tape recorders were widely used for voice recording in the home and in schools, along with dedicated models expressly made for business dictation.