A School Compendium of Natural and Experimental Philosophy ... Twenty-second edition, with additions, etc

acid angle aphelion appear atmosphere attraction axis axle ball barometer battery body called causes centre of gravity circle colours comet common concave mirror condensed connected constructed convex convex lens copper crystalline lens cylinder degree diameter direction distance earth eclipse effect elastic electricity equal Explain Fig fall feet fluid focus force friction fulcrum galvanic glass greater heat hydrometer inches inclined plane instrument length lens lever Leyden jar liquid machine magnet magnetic magazine mechanical mercury metal miles minor planets moon motion move needle object orbit particles pass pendulum perihelion perpendicular piston placed planets plate pole portion pounds pressure prime conductor principle produced properties proportion pulley pump quantity reflected refraction represents retina revolve rise screw seen side specific gravity stars steam substances surface telescope tion tube valve vapour velocity vessel vibrations Vitreous Humour voltaic voltaic pile weight wheel wire zinc