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Domain: acmi.net.au

Stories and comments across the archive that link to acmi.net.au.

Comments · 7

  1. Re:hidden cameras ftw by mikael · · Score: 2, Informative · on Massively Parallel X-Ray Holography

    Greeks and Optics

    The earliest known written evidence of a camera obscura can be found in Aristotle's documentation of a device in 350 BC in Problemata" (Patti, 1993). Aristotle's apparatus contained a dark chamber that had a single small hole to allow for sunlight to enter. With this device, he made observations of the sun. He noted that no matter what shape the hole was, it would still display the sun correctly as a round object. Another observation that he made was that when the distance between the aperture (the tiny hole) and the surface with the image increased, the image would become amplified. Although no one is perfectly sure, many attribute the invention of the camera obscura to Aristotle. He rejected the vision theory of Plato of light rays emitted from the eyes.

    Camera Obscura

  2. "Could this be the start of a Pleistocene park?" by njh · · Score: 1 · on Neanderthal Genome to be Sequenced

    Too late:
    http://www.acmi.net.au/CFBE0820A7C349B19C45831BCDD 53721.htm

    (Or maybe you were looking for Nick Park, of Wallace and Grommit fame?)

  3. Re:Life Imitating Art by refactored · · Score: 1 · on Neanderthal Genome to be Sequenced

    Plasticine Park Already exists.

  4. Re:Spark Gap? by Nonesuch · · Score: 1 · on 802.11 WiFi Denial of Service Exploit Discovered
    Couldn't the same effect also be achieve by a simple spark-gap generator?
    Yes, a spark gap transmitter could do this, building a spark gap with a 2Ghz+ resonant frequency is not difficult, all you need is a HV supply and some basic analog HF electronics textbook knowledge...

    The primary difference is that the 802.11 PCMCIA card is an FCC-accepted device, and therefore legal.

    The FCC is considering type acceptance for ultrawideband (UWB) transmitters which could incidentally act as 802.11 jamming devices.

  5. Farnsworth? Baird? Nipkow! by IvyMike · · Score: 2 · on 75th Anniversary of Television

    According to this , both Farnsworth and Baird were shown up Paul Nipkow, who patented television in 1884!

    Oh, sure, smart people will point out that Farnsworth invented the device that became modern television, but Baird had a working television (of a completely different technology) before that, and that Nipkow's device wasn't really practical. Logical folks will realize that there is nothing new under the sun and all inventions are built upon the shoulders of giants.

    But this is the internet, so forget smart and logical! Instead, I see a lot of people arguing without facts, a lot of name calling, and people blowing perceived slights against their country into calls for war. Blech.

  6. Re:Typical revisionism by Anonymous Coward · · Score: 0 · on 1936 Perspective on Television

    Thomas Edison did not invent the lightbulb. Another Brit, Joseph Swan did; 20 years before Edison.

  7. Re:The invention of TV by Bender_ · · Score: 1 · on 1936 Perspective on Television
    ...and it occurred to him--in a single, blinding moment--that a picture could be sent electronically through the airwaves in the same way, broken down into easily transmitted lines and then reassembled into a complete picture at the other end.

    So what ? Other people did this even before he was born. Sorry, Farnsworth is definitly NOT the inventor of television, but is just a piece in a bigger scheme.