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The Gakken EX-System is a series of educational electronics kits produced by Gakken in the late 1970s. The kits use denshi blocks (also known as electronic blocks) to allow electronics experiments to be performed easily and safely. Over 25 years after its original release, one of the main kits from the series was reissued in Japan in 2002.
Bookmate is a social ebook subscription service, available primarily on mobile, with catalogues in 9 languages. [2] The mobile app is supported on iOS , Android , Windows Phone and feature phones , and the service is also available in a web version.
An Evans balance, also known as a Johnson Matthey magnetic susceptibility balance, is a scientific instrument used to measure the magnetic susceptibility of solids and liquids. [ 1 ] [ 2 ] Magnetic susceptibility quantifies the extent to which a material becomes magnetized in an applied magnetic field .
A Magna Doodle drawing board. Magna Doodle is a magnetic drawing toy, consisting of a drawing board, a magnetic stylus, and a few magnet shapes.Invented in 1974 by Pilot Corporation, [1] over forty million units have been sold to date worldwide, under several brands, product names and variations, including Tyco and Mattel/Fisher Price.
A traditional bookbinder at work Bookbinder's type holder. Bookbinding is the process of building a book, usually in codex format, from an ordered stack of paper sheets with one's hands and tools, or in modern publishing, by a series of automated processes.
The findings point to the extent of trade networks connecting Europe and Jamestown during colonial times. These jet-black stones were “the most in-demand and expensive” in Europe at the time ...
An instruction manual, a booklet that instructs the player on how to play a game, is usually included as part of a video game package. Manuals can be large, such as the Civilization II manual which runs hundreds of pages, or small, such as the single sheet of double-sided A5 paper included with Half-Life 2.
Glenn A. Beck (background) and Betty Snyder (foreground) program ENIAC in BRL building 328. (U.S. Army photo, c. 1947–1955) ENIAC (/ ˈ ɛ n i æ k /; Electronic Numerical Integrator and Computer) [1] [2] was the first programmable, electronic, general-purpose digital computer, completed in 1945.