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Particleboard with veneer. Particle board, also known as particleboard or chipboard, is an engineered wood product, belonging to the wood-based panels, manufactured from wood chips and a synthetic, mostly formaldehyde based resin or other suitable binder, which is pressed under a hot press, batch- or continuous- type, and produced. [1]
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The Austrian engineer Paul Eisler invented the printed circuit as part of a radio set while working in the UK around 1936. In 1941 a multi-layer printed circuit was used in German magnetic influence naval mines. Around 1943 the United States began to use the technology on a large scale to make proximity fuzes for use in World War II. [6]
2004: First podcast, invented by Adam Curry and Dave Winer, is a program made available in digital format for download over the Internet and it usually features one or more recurring hosts engaged in a discussion about a particular topic or current event. [544] [545] [546] 2005: YouTube, the first popular video-streaming site, was founded
Solid bleached board, made purely from bleached chemical pulp and usually has a mineral or synthetic pigment. Solid unbleached board, typically made of unbleached chemical pulp. White lined chipboard, typically made from layers of waste paper or recycled fibers, most often with two to three layers of coating on the top and one layer on the ...
In 1958, Jack Kilby at Texas Instruments invented the hybrid integrated circuit (hybrid IC), [1] which had external wire connections, making it difficult to mass-produce. [2] In 1959, Robert Noyce at Fairchild Semiconductor invented the monolithic integrated circuit (IC) chip. [3] [2] It was made of silicon, whereas Kilby's chip was made of ...
The introduction of the wood chip industry to Western Australia in the 1960s initially attracted less opposition than it did in the eastern states. At first it was seen as an opportunity for the economic development of the south west; it was not until the 1970s that an environmental movement against it began to emerge [according to whom?].
Today, history has a broader scope as one of the disciplines interested in human history before the invention of writing. [8] [c] It is controversial whether history is a social science or forms part of the humanities. Like social scientists, historians formulate hypotheses, gather objective evidence, and present arguments based on this evidence.