Inventions

Telecommunication system

Telecommunications device that permits two or more users to conduct a conversation

Display device that provides a speaker with electronic visual text of a speech or script

Instrument that aids in the observation of remote objects

Telecommunication medium for transmitting and receiving moving images

Electromechanical Instrument

Ball sport using a curved table combining elements of sepak takraw and table tennis

Electrical resonant transformer circuit invented by Nikola Tesla

Fixed-geometry passive check valve allowing a fluid to flow preferentially in one direction, without moving parts

Optical toy, a disk with a picture on each side and a string that creates the illusion of movement when spinning

Statue depicting a scribe with crossed legs and writing tools ready

Proposed reform of the Gregorian calendar, consisting of 4 quarters, each consisting of 3 months of length 31, 30 and 30, with an extra day after December and (on leap years) after June

Electronic music instrument

Type of resistor whose resistance varies with temperature

Pyrotechnic composition of metal powder and metal oxide

Device that measures temperature or a temperature gradient

Component which maintains a setpoint temperature

Medical procedure, aspiration of fluid or air from the thoracic cavity

Medical procedure, aspiration of fluid or air from the thoracic cavity

Common electrical power generation, transmission and distribution method for alternating currents

Script variety of Arabic calligraphy

German open sandwich consisting of a slice of toast with ham and cheese, and a maraschino cherry in the middle of a pineapple slice

Brand of chocolate confection

Printed fabric

Device using a magnetic field to confine a plasma in the shape of a torus with the plasma stabilized by a current

Fluid coupling that transfers rotating power from a prime mover to a rotating driven load

6-lobed, star-shaped screw drive

Addition to the mechanics of a watch escapement

Mathematical game or puzzle

Computer network diagnostic tool

System of rapid mental calculation

Signalling device to control competing flows of traffic

Astronomical transit of Venus across the Sun

Urban development that maximizes the amount of residential, business, and leisure space within walking distance of public transport

Fictional teleportation device installed on starships and starbases in Star Trek

Fictional teleportation device installed on starships and starbases in Star Trek

Movable bridge that carries a segment of roadway across an obstacle

Electronic musical instrument

Electronic musical instrument

Device used to amplify radio frequency signals in the microwave spectrum

Three-wheeled self-powered vehicle

Single-grid amplifying vacuum tube having three active electrodes

Variety of Marxism developed by Leon Trotsky

Musical instrument

Quality of preferring concepts or facts one wishes to be true, rather than concepts or facts known to be true

Variety of grossular

Japanese ramen with noodles eaten from a separate bowl

Genus of vertebrate from the Pennsylvanian geological period

Device used to produce a fixed tone

Jet engine

Homo erectus fossil found in Kenya in 1984

Oldest operational trumpets

Oldest operational trumpets

Mechanical or electromechanical machine for typing characters

Concept in the philosophy of Friedrich Nietzsche

Japanese art genre, fl. 17th–19th c., consisting of woodblock prints and paintings of such subjects as female beauties, kabuki actors, sumo wrestlers, scenes from history and folk tales, travel scenes, landscapes, flora, fauna, and erotica

Member of the guitar family

Team sport played with a disc

Blue pigment originally made by grinding lapis lazuli into a powder

Japanese dish