![An elementary book on electricity and magnetism and their applications . Fig. 327. — Distribution of light. Curve Awithout shade, curve B with shade. ELECTRIC LIGHTING 465. Fig. 328. Distribution curves for An elementary book on electricity and magnetism and their applications . Fig. 327. — Distribution of light. Curve Awithout shade, curve B with shade. ELECTRIC LIGHTING 465. Fig. 328. Distribution curves for](https://c8.alamy.com/comp/2AJ0131/an-elementary-book-on-electricity-and-magnetism-and-their-applications-fig-327-distribution-of-light-curve-awithout-shade-curve-b-with-shade-electric-lighting-465-fig-328-distribution-curves-for-a-magnetite-arc-a-lamp-alone-b-withproper-devices-318-measurement-of-illumination-in-these-days-when-wedo-so-much-of-our-work-and-play-by-lamplight-the-problem-ofillumination-is-a-very-vital-one-in-the-first-place-it-is-essen-tial-to-have-enough-light-to-see-things-distinctly-but-further-more-experience-shows-that-we-may-have-enough-light-andyet-not-be-able-to-distinguish-the-po-2AJ0131.jpg)
An elementary book on electricity and magnetism and their applications . Fig. 327. — Distribution of light. Curve Awithout shade, curve B with shade. ELECTRIC LIGHTING 465. Fig. 328. Distribution curves for
![An elementary book on electricity and magnetism and their applications . Fig. 324. — Flame arcmade with impregnatedcarbons beneath a vit-reous canopy. 462 ELECTRICITY AND MAGNETISM To-. Magnetite, etc. Fig. 325. — An elementary book on electricity and magnetism and their applications . Fig. 324. — Flame arcmade with impregnatedcarbons beneath a vit-reous canopy. 462 ELECTRICITY AND MAGNETISM To-. Magnetite, etc. Fig. 325. —](https://c8.alamy.com/comp/2AJ02CG/an-elementary-book-on-electricity-and-magnetism-and-their-applications-fig-324-flame-arcmade-with-impregnatedcarbons-beneath-a-vit-reous-canopy-462-electricity-and-magnetism-to-magnetite-etc-fig-325-luminous-arc-lamp-with-copper-electrodeand-diagram-of-connections-unlike-other-arc-lamps-this-luminous-arc-lamp-fig-325-as-itis-sometimes-called-is-not-adapted-to-interior-use-on-constant-voltage-circuits-starting-resistance-vi-but-is-used-for-street-lighting-onconstant-currentcircuits-since-thismagnetite-arc-is-ad-c-lamp-it-isusually-suppliedfrom-a-c-lines-bymercury-arc-2AJ02CG.jpg)
An elementary book on electricity and magnetism and their applications . Fig. 324. — Flame arcmade with impregnatedcarbons beneath a vit-reous canopy. 462 ELECTRICITY AND MAGNETISM To-. Magnetite, etc. Fig. 325. —
![Magnetite" street lights hang in pairs from extended poles that also carry electricity for the trolleys. General Electr… | Sibley, Street light, Rochester new york Magnetite" street lights hang in pairs from extended poles that also carry electricity for the trolleys. General Electr… | Sibley, Street light, Rochester new york](https://i.pinimg.com/736x/08/53/ba/0853ba377d1de681dc6c93b7ebe15d12.jpg)