Convention, Volume 18 |
Dari dalam buku
Hasil 1-3 dari 27
Halaman 111
... object , of , say , printed characters , is placed in a darkened box , sufficiently small to be readily carried in the pocket . The test object is exposed to illumination received from a translucent plate of porcelain or opal glass ...
... object , of , say , printed characters , is placed in a darkened box , sufficiently small to be readily carried in the pocket . The test object is exposed to illumination received from a translucent plate of porcelain or opal glass ...
Halaman 113
... object just permits of its legibility . The detailed construction of our apparatus will be understood from an examination of Figs . 1 , 2 and 3 , which represent , respectively , a longitudinal cross- section , a transverse cross ...
... object just permits of its legibility . The detailed construction of our apparatus will be understood from an examination of Figs . 1 , 2 and 3 , which represent , respectively , a longitudinal cross- section , a transverse cross ...
Halaman 121
... object , we find that we have to wait a little while before the eyes will respond ; and it depends altogether on the degree of brightness of the object towards which we looked at first how long we shall have to wait . It is difficult to ...
... object , we find that we have to wait a little while before the eyes will respond ; and it depends altogether on the degree of brightness of the object towards which we looked at first how long we shall have to wait . It is difficult to ...
Isi
Active Members | 4 |
The Okonite Company Limited 297 | 8 |
Officers and Executive Committee ΙΟ | 10 |
4 bagian lainnya tidak diperlihatkan
Edisi yang lain - Lihat semua
Istilah dan frasa umum
alternating current amount amperes apparatus arc lamps arc lighting armature boilers candle-power capacity carbons cell cent central station charge circuit Cleveland committee connected convention copper curve direct current discharge disruptive discharges dynamo economy Edison Edison illuminating companies effective horse-power efficiency Electric Company Electric Light Association Electric Light Company electrical horse-power electro-motive force energy feed and steam feed storage fixed annual cost gas engine gentlemen horse-power hour illuminometer incandescent inches indicated horse-power installation instrument insulation interest Light and Power lightning arrester machine maximum measured monocyclic system motor National Electric Light operation paper PERRY plant plates polyphase system pound of coal Power Company power wire practice PRESIDENT Professor question SEELY single-phase spark gaps standard candle station battery steam storage storage battery tanks test object thermal storage vessel three-phase three-wire system to-day Total fixed annual transformers two-phase units variable load voltage volts watts