Faraday's hood Fahreneit areometer Fluorescent substances Fortin's barometer Foucault's pendulum Franklin's boiler Franklin's scintillating picture Free air manometer Fresnel's bi-prism Fresnel's mirrors Geissler's tube Glass rods Grenet's pile Group of two models illustrative of polyphase motors

Haldat's apparatus Headphones Hollow prism for liquids Hughes microphone Hydraulic press Hydraulic wheel Hydraulic whirl Hydrometer (acid) Hydrometer (ammonia) Hydrometer (salt) Hydrostatic balance