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Nipkow disk
- sp332 7y agoI don't understand why you have to approximate straight scanlines by using a fraction of a really large disk. What's the disadvantage in using a smaller disk and letting the scanlines be curved?
- auggierose 7y agoA descendant of this guy is hard at work in theorem proving: http://www21.in.tum.de/~nipkow/ http://www21.in.tum.de/~nipkow/
- YorkshireSeason 7y agoIs this a joke or is Tobias a (great) grandson of Paul Gottlieb's?
- auggierose 7y agoNot a joke. I asked him about that (quite) a few years ago, and he indeed is :-)
- gdk 7y agoWilliam Osman tried to build a mechanical display around these: https://www.youtube.com/watch?v=R96TtG5FCTU https://www.youtube.com/watch?v=R96TtG5FCTU
- felipemnoa 7y agoHe seems to really be overcomplicating its construction with all those fancy 21st century electronics when in reality you can build it with early 20th century materials. I wonder if a camera obscura would be enough to create the focused image instead of having to bother with lenses.
- Sharlin 7y agoProbably, but that would require even more light.
- lucb1e 7y agoSet appropriate expectations before you watch this video, it was definitely educative and entertaining, but the emphasis is on 'tried'. I was a little disappointed that it didn't actually end up working.
- vesinisa 7y agoHere is an excellent in-depth explanation of the concept from one of my favorite educational YouTube channels - Technology Connections: https://youtu.be/v5OANXk-6-w https://youtu.be/v5OANXk-6-w
- Zenst 7y agoI just watched that and have to agree, an excellent in-depth explanation it was indeed, with a lovely demonstration.
- inflatableDodo 7y agoThanks for this, I have been trying to remember the term 'confocal microscopy' for a while. https://en.wikipedia.org/wiki/Confocal_microscopy https://en.wikipedia.org/wiki/Confocal_microscopy
- felipemnoa 7y agoThis is a really good short educational video about the invention of television: https://www.youtube.com/watch?v=MyHAev_qJNU https://www.youtube.com/watch?v=MyHAev_qJNU
- LeoPanthera 7y agoThe spelling of disk, with a K, intrigues me, since I was under the impression that disk-with-a-K was short for "diskette", meaning a circular spinning object protected inside an outer casing. Circular flat objects are spelled disc, with a C. Hence floppy disk, hard disk, but compact disc. (MiniDisc is the only exception to this rule that I can think of, probably because it is a trade mark.)
- Sharlin 7y agoSeems Wikipedia has a dedicated article on the subject! https://en.wikipedia.org/wiki/Spelling_of_disc https://en.wikipedia.org/wiki/Spelling_of_disc
- dmix 7y agoRelevant bit: > in the case of flat, rotational data storage media the convention is that the spelling disk is used for magnetic storage (e.g. hard disks) while disc is used for optical storage (e.g. compact discs, better known as CDs). When there is no clear convention, the spelling disk is more popular in American English, while the spelling disc is more popular in British English.
- LeoPanthera 7y agoI should have known, Wikipedia knows everything. I didn't know that disk = diskette was a British thing! And I am British. So I guess that makes sense.
- deleted 7y ago[deleted]
- oakwhiz 7y agoCould it be possible to use this mechanism to create a type of X-ray or gamma ray camera? Perhaps using a lead disc.
- JoeAltmaier 7y agoThis is very similar to the old fax machines, that had a needle over a rotating text on a wax cylinder and reproduced the needle up-down on the other end with a pen. Predated telegraph etc.