Mindblown: a blog about philosophy.
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Thomas edison
Dr. Michael Pupin of Columbia University pioneered the development of fluorescent screens using calcium tungstate, which were first employed in 1896.
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Edison’s fluoroscope
A manual fluoroscope utilized by Thomas Edison during his experiments in 1896.
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Edison effect
The release of visible light, such as the illumination emitted by an intensifying screen when exposed to x-rays.
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Eddy current
A negligible current loss caused by heating of the transformer’s core, which can be minimized by employing insulated laminated silicon plates.
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Earthed
Describing the circuit as being connected to a ground reference or electrically safe.
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Dynode
The component of a photomultiplier tube where secondary electrons are emitted, thereby providing amplification.
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Dry cell
A remarkable carbon cell, featuring a carbon rod as its anode terminal and a cathode comprised of zinc immersed in a chemical paste infused with sal ammoniac.
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Film drier
An exquisite cabinet made of enamel or stainless steel, equipped with meticulously designed racks specifically crafted to securely accommodate the damp films. As an integral component of the setup, a proficient heating mechanism seamlessly integrates to facilitate expeditious drying processes.
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Double-pole single throw
A four-terminal switch or relay contact configuration that enables the simultaneous opening or closing of two distinct circuits or both sides of a single circuit.
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Double focus tube
An X-ray tube equipped with dual focal spots, with one being smaller than the other. The smaller focal spot is utilized for capturing maximum detail, while the larger one allows for the application of higher energy levels to the tube.
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