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Cement
A cement is a binder, a substance used for construction that sets, hardens, and adheres to other materials to bind them together. -
Dynamite, Nobel
Dynamite is a very powerful explosive -
Automobile
is a wheeled motor vehicle used for transportation. -
Cinema
is the technique and art of creating and projecting footage -
THE TELEVISION
Television is a system for the transmission and reception of images and sounds at a distance that simulate movement, using a diffusion mechanism. -
radar
Radar is a system that uses electromagnetic waves to measure distances, altitudes, directions and speeds of objects -
jet aircraft
A jet aircraft is an aircraftpropelled by jet engines. -
nuclear reactor
A nuclear reactor is a device where a controlled nuclear chain reaction takes place. -
first artificial satellite
Sputnik 1 was the first successful attempt to put an artificial satellite into orbit around the Earth. -
Led diode
is a light source made of a semiconductor material with two terminals -
Email
Electronic mail is a method of exchanging messages between people using electronic devices. -
Mobile phone
is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area. -
Personal computer
A personal computer is a multi-purpose computer whose size, capabilities, and price make it feasible for individual use. -
Bluetooth
is an industry specification for wireless personal area networks -
DVD
The DVD is a type of optical disc for data storage.
