Chemical News and Journal of Industrial Science, Tomy 117-118Chemical news office., 1918 |
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Strona 13
... electric furnaces capable of accurate temperature control , observations on natural silicates and artificial silicates , such as glasses , were con- fined to determinations at ordinary temperatures of such physical properties as density ...
... electric furnaces capable of accurate temperature control , observations on natural silicates and artificial silicates , such as glasses , were con- fined to determinations at ordinary temperatures of such physical properties as density ...
Strona 34
... electric power but how best to generate it . The development of electricity in this country has been hindered by the numerousness and the smallness of the electrical undertakings . At the present time the supply of electricity in Great ...
... electric power but how best to generate it . The development of electricity in this country has been hindered by the numerousness and the smallness of the electrical undertakings . At the present time the supply of electricity in Great ...
Strona 35
... electrical undertakings , the price per unit for electric power varies from a penny to twopence or more , the average price paid in the north - east coast district is less than a half - penny a unit , and the use of electric power per ...
... electrical undertakings , the price per unit for electric power varies from a penny to twopence or more , the average price paid in the north - east coast district is less than a half - penny a unit , and the use of electric power per ...
Strona 45
... electric ferro alloys ! Think of the millions of pounds of electrolytic copper that are absolutely essential for our electrical apparatus ! There is the air - plane , whose light strong stays are made from the electro - chemical metals ...
... electric ferro alloys ! Think of the millions of pounds of electrolytic copper that are absolutely essential for our electrical apparatus ! There is the air - plane , whose light strong stays are made from the electro - chemical metals ...
Strona 50
... electric light . A good white light is necessary . That from an ordinary cycle actylene lamp , or good oil lamp , are both satisfactory . Gas mantle jets also give good results . Metal filament and carbon film electric lamps require ...
... electric light . A good white light is necessary . That from an ordinary cycle actylene lamp , or good oil lamp , are both satisfactory . Gas mantle jets also give good results . Metal filament and carbon film electric lamps require ...
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