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  2. Ultra low expansion glass - Wikipedia

    en.wikipedia.org/wiki/Ultra_low_expansion_glass

    Ultra low expansion glass has an coefficient of thermal expansion of about 10 −8 /K at 5–35 °C. [2] It has a thermal conductivity of 1.31 W/(m·°C), thermal diffusion of 0.0079 cm 2 /s, a mean specific heat of 767 J/(kg·°C), a strain point of 890 °C [1634 °F], and an estimated softening point of 1490 °C [2714 °F], an annealing point ...

  3. Corning Inc. - Wikipedia

    en.wikipedia.org/wiki/Corning_Inc.

    Corning was the glass supplier for lightbulbs for General Electric after Edison General Electric merged with Thomson-Houston Electric Company in 1892. [34] It was an early major manufacturer of glass panels and funnels for television tubes, invented and produced Vycor (high temperature glass with

  4. Borosilicate glass - Wikipedia

    en.wikipedia.org/wiki/Borosilicate_glass

    Guitar slide made of borosilicate glass. Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10 −6 K −1 at 20 °C), making them more resistant to thermal shock than any other common glass.

  5. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    10–19 – Y8A 8-pin steel tube base, aka "German metal octal" 20–29 – Loctal B8G; some octal; some 8-way side contact (exceptions are DAC21, DBC21, DCH21, DF21, DF22, DL21, DLL21, DM21 which have octal bases) 30–39 – International Octal (IEC 67-I-5a), also known as IO or K8A; 40–49 – Rimlok (Rimlock) B8A All-glass miniature tubes

  6. Texas wants to buy surplus border wall parts but U.S ... - AOL

    www.aol.com/news/texas-wants-buy-surplus-border...

    Texas officials try to intercept sale of surplus border wall materials Patrick noted that Texas became aware of the materials slated for auction on Dec. 12, the same day the Daily Wire reported ...

  7. Glass tube - Wikipedia

    en.wikipedia.org/wiki/Glass_tube

    Glass tubes are produced in various types of glass and in diameters ranging from a few millimeters to several centimeters. In most production processes, an "infinitely long" glass tube is drawn directly from the melt, from which approximately 1.5 m long pieces are chopped off after passing a roller track up to the drawing machine.

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