Light and Electricity: Notes of Two Courses of Lectures Before the Royal Institution of Great Britain

aberration of light angle of incidence aperture atoms attraction augmented axis bands battery body bright bright bands cable called caused centre circuit coil colors conductor convex core crystal dark diamagnetic direction discharge distance duced earth elasticity electric current electrified electro-magnet electrode emission theory employed ether ether waves film flame force formed galvanometer glass gypsum heat helix Hence hydrogen Iceland spar illuminated inch index of refraction intensity intersect iron lens lines liquid luminous magnetic marginal rays metals mirror motion needle object oblique obtained optic oxygen parallel particles passes perpendicular phenomena placed plane of vibration plate platinum polarized poles portion positive primary principal focus prism produce rays reflected refractive index repelled retardation retina rings rotation round screen secondary shadow slit solar spark spectrum spherical square substance thickness tion tourmaline transmitted vapor velocity of light voltaic current waves white light wire zinc