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Hans Berger (21 May 1873 – 1 June 1941) was a German psychiatrist. He is best known as the inventor of electroencephalography (EEG) in 1924, which is a method used for recording the electrical activity of the brain, commonly described in terms of brainwaves , and as the discoverer of the alpha wave rhythm which is a type of brainwave.
A clipboard is a thin, rigid board with a clip at the top for holding paper in place. A clipboard is typically used to support paper with one hand while writing on it with the other, especially when other writing surfaces are not available. The earliest forms were patented in 1870–1871 and referred to as board clips. [1]
Hans Berger (1873–1941), Germany – first human EEG and its development; Friedrich Bergius (1884–1949), Germany – Bergius process (synthetic fuel from coal) Emile Berliner (1851–1929), Germany and U.S. – the disc record gramophone; Tim Berners-Lee (born 1955), UK – with Robert Cailliau, the World Wide Web
Alpha waves were discovered by German neurologist Hans Berger, the inventor of the EEG itself. Alpha waves were among the first waves documented by Berger, along with beta waves, and he displayed an interest in "alpha blockage", the process by which alpha waves decrease and beta waves increase upon a subject opening their eyes. This distinction ...
Advertisement for Bayer Heroin The first human EEG recording obtained by Hans Berger in 1924 1796: Homeopathy by Samuel Hahnemann [ 324 ] 1803–1827: First isolation of morphine by Friedrich Sertürner in Paderborn ; first marketed to the general public by Sertürner and Company in 1817 as a pain medication ; and the first commercial ...
At the time, it was the world's largest paper clip. MacDonald made his first trade, a red paper clip for a fish-shaped pen, on July 14, 2005. He reached his goal of trading up to a house with the fourteenth transaction, trading a movie role for a house. This is the list of all transactions MacDonald made: [2]
A binder clip (also known as a foldback clip, paper clamp, banker's clip, foldover clip, bobby clip, or clasp) is a simple device for binding sheets of paper together. It leaves the paper intact and can be removed quickly and easily, unlike the staple .
Hans Berger: a German neurologist, best known as the inventor of electroencephalography (EEG) (the recording of "brain waves") in 1924, coining the name, and the discoverer of the alpha wave rhythm known as "Berger's wave" Emil Berliner: He is best known for developing the microphone and disc record gramophone. Albert Betz: Betz's law, 1913