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PE-1100 LED and Diodelaser
Nick Holonyak developed the first practical LED in 1962. When electrically biased in the forward direction, an LED is able to emit light through [...]
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PE-1000 CCD Camera & Night Vision
The principle of creating an image through projection on a surface is known since ancient times. Aristotle observed images of the sun through holes generated by [...]
Mais DetalhesPE-0900 Diffraction Grating
Joseph von Fraunhofer, the investigator of the solar lines, invented the diffraction grating in 1821. This optical element showed a much higher dispersion than any [...]
Mais DetalhesPE-0800 Holography
In 1948 – before the era of lasers – Denis Gabor developed the transmission holography technique and took the first real holograms. For the invention of [...]
Mais DetalhesPE-0700 Abbe Refractometer
Ernst Abbe was not the first and not the only scientist who developed a convenient refractometer, but his refractometer is – in several varied and updated versions [...]
Mais DetalhesPE-0600 Optical Interferometer
In 1881 Albert Michelson used an interferometer to successfully disprove the theory of a universal ether that existed till then. Later on, he determined the length [...]
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