Science Abstracts
Science Abstracts
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In our eReader you can find the full English version of the book. Read Science Abstracts Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Science Abstracts
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White mica in i>oith. large and smatl sheets avers^ged 8,100 volts per mil. Similar. qualities of mica show little diffecence in dielectric strength, whether mined in the y..Sj\.., Canada, or India. Built-up mica, if cemented with a non -hygroscopic varnish, possesses considerable advantages over pressboard or other fibrous insulators for core, slot, or coil work ; it can be made to within O'Ol in. of the desired thickness. The main disadvantage of pressboard is the .posability of the presence ...of pinholes or conducting particles too small for detection by the eye ; thicknesses of over 0*08 in. should be avoided, and if a greater thickness is required it is better to use two thinner sheets. Vulcabeston in the form of a sheet ^^ in. thick will bre^k down at about 2,600 volts. Thin paper (0-007 in.) will be punctured by 600 volts. All fibrous insulators exhibit large variations in their dielectric strength. In dealing with insulating varnishes the author condemns simple gum varnishes (copal, shellac) and bitumen and other mineral pitches, as when subject to vibration they crumble away.
What to read after Science Abstracts?
You can find similar books in the "Read Also" column, or choose other free books by Institution of Electrical Engineers to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
White mica in i>oith. large and smatl sheets avers^ged 8,100 volts per mil. Similar. qualities of mica show little diffecence in dielectric strength, whether mined in the y..Sj\.., Canada, or India. Built-up mica, if cemented with a non -hygroscopic varnish, possesses considerable advantages over pressboard or other fibrous insulators for core, slot, or coil work ; it can be made to within O'Ol in. of the desired thickness. The main disadvantage of pressboard is the .posability of the presence ...of pinholes or conducting particles too small for detection by the eye ; thicknesses of over 0*08 in. should be avoided, and if a greater thickness is required it is better to use two thinner sheets. Vulcabeston in the form of a sheet ^^ in. thick will bre^k down at about 2,600 volts. Thin paper (0-007 in.) will be punctured by 600 volts. All fibrous insulators exhibit large variations in their dielectric strength. In dealing with insulating varnishes the author condemns simple gum varnishes (copal, shellac) and bitumen and other mineral pitches, as when subject to vibration they crumble away.
What to read after Science Abstracts?
You can find similar books in the "Read Also" column, or choose other free books by Institution of Electrical Engineers to read onlineMoreLess
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