Simon 1] My bad I did not know the technology was passive.
2] I still think that this is passive. 3] This was me being late night picky! Yes the model depicts something but what? Is it the concept of DNA or a particular identifiable instance of DNA or ….. As to “Photograph 51” I am unfamiliar with this particular example of the photographers art but again, when you say DNA what do you mean? Stephen Stead Tel +44 20 8668 3075 Mob +44 7802 755 013 E-mail <mailto:[email protected]> [email protected] LinkedIn Profile <http://uk.linkedin.com/in/steads> http://uk.linkedin.com/in/steads From: Crm-sig [mailto:[email protected]] On Behalf Of Simon Spero Sent: 24 July 2016 22:57 To: martin <[email protected]>; [email protected] Subject: Re: [Crm-sig] P62 Homework On Sun, Jul 24, 2016, 3:39 PM martin <[email protected] <mailto:[email protected]> > wrote: Dear Franco, All, Dear Martin, Stephen, all :-) The property "depicts" was meant to do it via a visual process, in particular statues and paintings, that by their whole shape and surface properties represent something. This means, by surface properties and passive light reflection. [all uses of "depict" or "depicts" that follow should be understood as referring to P62, possibly with the second argument unspecified] This roughly matches my understanding, which makes a couple of Stephen's answers confusing; possibly because my questions were unclear. 1) a picture on an e-ink display does not depict. This surprised me, as e-ink (and e-paper in general) work by passive light reflection, and only require power to change the display. The intended contrast was with the active OLED display, which emits light, and requires continuous power. 2) a picture that requires a UV lamp to be seen does depict. This question was aimed at clarifying whether the image must be produced by (subtractive) reflection of incident light, or if fluorescence caused absorption of that light was sufficient. 3) a ball-and-stick model of DNA is not a depiction of DNA. I am unsure why this is the case; it is a symbolic representation, created by human activity, and intended to be decoded using the human visual system without the assistance of specific equipment. If it does not depict, then it is not clear that "Guernica" does. I assume it is uncontroversial that "Photograph 51" depicts DNA? Simon
