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Handbuch der physiologischen Optik/ von h. Von Helmholtz By Hermann von Helmholtz, Arthur Peter König : " "

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Filed under: Digital Cameras Vision Research already has some pretty capable high-speed cameras under its belt, but the company looks to have outdone even itself with its latest model, which is apparently the first such camera to hit the one-million pictures-per-second mark. Of course, to grab that impressive burst of images you'll have to settle for a 256x8 resolution, although you'll still get a decent 6,315 pictures-per-second with the maximum 1280x800 resolution. Otherwise, you can expect 8GB, 16GB or 32GB of internal storage depending on the exact model (which includes both color and monochrome options), "unprecedented light sensitivity," and Vision's Extreme Dynamic Range feature, which'll let you capture two different exposures within one single frame. No word on a price, although some things are probably better left unsaid. [Via Gadget Lab ]   Read | Permalink | Email this | Comments Blogged with Flock

Filed under: Laptops We knew we were in for some rough chuckles when Birmingham, Alabama signed up to provide an OLPC XO to every K-8 student last December , but we didn't think they'd be this silly from the get-go: apparently the mayor's office, which negotiated the deal, is now saying the school board needs to add WiFi to every school for the laptops to work. That's news to us -- the mesh-networking XO was designed to be used in rural parts of the third world, after all -- but we're still puzzling out what mayoral advisors John Katopodis and Bob McKenna meant when they said they're "trying to make the whole city WiFi," or where they got a quote of $39 per school to enable wireless access. Of course, the only response from the school board was one member who worried about students accessing porn -- which seems to be a real theme with the XO -- but for some reason we're not at all surprised that bureaucratic officials have totally missed the point...

David Burr 1 & John Ross 2 Correspondence: dave [at] in.pi.cnr.it Correspondence: jr [at] psy.uwa.edu.au Dipartimento di Psicologia, Universita' di Firenze, Italy School of Psychology, The University of Western Australia PDF (59.4 KB) Document Type: Manuscript Date: Received 20 November 2007 08:56 UTC; Posted 20 November 2007 Subjects: Neuroscience Tags: Vision perception numerosity adaptation Abstract: Evidence exists for a non-verbal capacity to apprehend number, in humans 1 (including infants 2,3 ) and in other primates 4-6 . Here we show that perceived numerosity is susceptible to adaptation, along with primary visual properties of a scene like colour, contrast, size and speed. Apparent numerosity was decreased by adapting to large numbers of dots and increased by adapting to small numbers, the effect depended entirely on the numerosity of the adapter, not on contras...

more... Monica Gori et al. Posted 16 January 2008 Subjects: Neuroscience Tags: visual information haptic information perception development Vision PDF Blogged with Flock

http://precedings.nature.com/documents/1526/version/1 Open Data (OD) is an emerging term in the process of defining how scientific data may be published and re-used without price or permission barriers. Scientists generally see published data as belonging to the scientific community, but many publishers claim copyright over data and will not allow its re-use without permission. This is a major impediment to the progress of scholarship in the digital age. This article reviews the need for Open Data, shows examples of why Open Data are valuable and summarizes some early initiatives in formalizing the right of access to and re-use of scientific data. Blogged with Flock from: http://precedings.nature.com/