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Dove Prism, Buy Glass Prism - 1 views

www.hypoptics.com/...dove-prism.html where can i buy a glass prism
shared by hypoptics on 27 Apr 21 - No Cached
  • hypoptics on 27 Apr 21
     
    Dove prisms are used as reflective prism inverting the image. Dove prism is shaped from a truncated right-angle prism. Normally, dove prisms are used in the parallel optical path based on critical angle principle to meet total internal reflection with limited FOV. A beam of light entering one of the sloped faces of the prism undergoes total internal reflection from the inside of the longest (bottom) face and emerges from the opposite sloped face. Images passing through the prism are flipped, and because only one reflection takes place, the image is inverted but not laterally transposed. A beam of light entering the sloped faces undergoes total internal reflection from the bottom surface, and emerges from the opposite sloped face. Also interestingly whtn dove prisms optical are rotated along longitudinal axis, the image rotates at twice the rate of the prism which have applications in fields such as interferometry, astronomy, and pattern recognition. Dove prisms can be also used as right angle prisms with sloped faces HR coated. Hyperion Optics supplies standard and custom made dove prisms according to your requirement; please refer to following spec grid for further capability study. Talk to our technicians today to find out the best tolerance fit that works with your application. Dove Prism COMMERCIAL GRADE FACTORY STANDARD PRECISION GRADE Dimension Tolerance(mm) ±0.05 ±0.03 ±0.0125 Angle Tolerance( Arc min) 5' 3' 1' Cosmetic(MIL-C-13830A) 80-50 40-20 10-5 Flatness  @632.8 nm 2 Lambda 1/2 Lambda 1/10 Lambda Coating (T% avg) VIS 96-98% 99% 99.5% Coating (R% avg) VIS 96-98% 99% 99.5% Materials Optical Glass,  fused silica Hyperion Optics is a professional premium supplier. We provide Anamorphic Lenses, Collimating Lenses, optical design manufacturing and so on. Want to know where can i buy a glass prism? Want to buy glass prism? Please contact us.
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A mechanical shutter design plan - 0 views

www.tanerxun.com/....html mechanical-design mechanism-design mechanical-mechanism aperture mechanical-shutter mechanical-iris iris-folding iris-mechanism lens-protector industrial-design robotics planetary-gear internal-gear gear-set
shared by monk3947 on 12 Jan 23 - No Cached
  • monk3947 on 12 Jan 23
     
    The whole mechanism can be used as a functional unit. When you rotate the "Drive Gear", the blades in the center hole open or close gradually. It is similar to a camera aperture or iris diaphragm. A motor can be used to drive the mechanism.
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Composing Spaces » Blog Archive » preparing writers for the future of informa... - 1 views

williamwolff.org/...-future-of-information-systems diigo education review writing
shared by Maggie Tsai on 27 Feb 08 - Cached
  • I clicked on it and found a step-by-step guide by Andre ‘Serling’ Segers at ign.com. After reading the Basics, I clicked on Walkthrough, which contains detailed instructions with screen shots for each step of the game. I went to my Diigo toolbar and clicked "bookmark." I entered the following tags: zelda, wii, guide, and video-games. I then printed out the guide to Part 1 and went back to my living room to play. After I completed Part 1 I went back to my computer where I saw that the Diigo widget in my Netvibes ecosystem had a link to the Zelda guide. I clicked on the link, found Part 2, printed it, and continued playing. Here is the complete process, repeated.
  • each of the online tools-each of the Web 2.0 technologies-I used during this process is as much a semiotic domain as Zelda itself. They are filled with, to borrow from Gee’s list, written language, images, equations, symbols, sounds, gestures, graphs, and artifacts. Consider, for example, the upper left section of the Netvibes RSS reader that I use-and asked students to use:
  • ...10 more annotations...
  • how to use them within the context of a particular action: finding, retrieving, storing, and re-accessing a certain bit of information
  • Only recently, with the pervasiveness of social bookmarking software (such as Del.icio.us and Diigo) and the ubiquity of RSS feed readers (such as Google Reader and Netvibes), have technologies been available for all internet users to compose their own dynamic storage spaces in multiple interconnected online locations.
  • These dynamic storage spaces each contain what Jay David Bolter (2001) calls writing spaces-online and in-print areas where texts are written, read, and manipulated. Web 2.0 technologies are replete with multiple writing spaces, each of which has its own properties, assumptions, and functions
  • If we can see these spaces as semiotic domains, then we must also see them as spaces for literacy-a literacy that is a function of the space’s own characteristics.
  • [T]echnological literacy . . . refers not only to what is often called "computer literacy," that is, people’s functional understanding of what computers are and how they are used, or their basic familiarity with the mechanical skills of keyboarding, storing information, and retrieving it. Rather, technological literacy refers to a complex set of socially and culturally situated values, practices, and skills involved in operating linguistically within the context of electronic environments, including reading, writing, and communicating. The term further refers to the linking of technology and literacy at fundamental levels of conception and social practice. In this context, technological literacy refers to social and cultural contexts for discourse and communication, as well as the social and linguistic products and practices of communication and the ways in which electronic communication environments have become essential parts of our cultural understanding of what it means to be literate.
  • I teach a portion of a team-taught course called Introduction to Writing Arts that is now required for all Writing Arts majors. In groups of 20 students rotate through three four-week modules, each of which is taught by a different faculty member. My module is called Technologies and the Future of Writing. Students are asked to consider the relationships among technology, writing, and the construction of electronic spaces through readings in four main topic areas: origins of internet technologies, writing spaces, ownership and identities, and the future of writing.
  • how can we prepare students for the kinds of social and collaborative writing that Web 2.0 and Web 3.0 technologies will demand in the coming years? How can we encourage students to create environments where they will begin to see new online writing spaces as genres with their own conventions, grammars, and linguistics? How can we help students-future writers-understand that the technologies they use are not value neutral, that they exist within a complex, distributed relationship between humans and machines? And how can that new-found understanding become the basis for skills that students will need as they continue their careers and as lifelong learners?
  • so much of writing is pre-writing-research, cataloguing, organizing, note-taking, and so forth-I chose to consider the latter question by introducing students to contemporary communication tools that can enable more robust activities at the pre-writings stage.
  • I wanted students to begin to see how ideas-their ideas-can and do flow between multiple spaces. More importantly, I wanted them to see how the spaces themselves influenced the flow of ideas and the ideas themselves.
  • The four spaces that I chose create a reflexive flow of ideas. For example, from their RSS feed reader they find a web page that is interesting or will be useful to them in some way. They bookmark the page. They blog about it. The ideas in the blog become the basis for a larger discussion in a formal paper, which they store in their server space (which we were using as a kind of portfolio). In the paper they cite the blog where they first learned of the ideas. The bookmarked page dynamically appears in the social bookmark widget in their RSS reader so they can find it again. The cycle continues, feeding ideas, building information, compounding knowledge in praxis.
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    indoor swing gate - 0 views

    www.turnstilecn.com/...d-surface-swing-turnstile.html indoor swing gate
    shared by turnstilecxt on 10 Jul 18 - No Cached
    • turnstilecxt on 10 Jul 18
       
      Easy operation and convenient maintenance with functions of breakdown self-check and alarm. Can be linked to an external control device and receive the signal by the button or remote control, thus to realize one or bi-direction passing control. Auto reset function: Arm rotates 90 degree and auto resets after detection of human/objects' passing, or auto cancels passing right and resets if there has no valid passing within the specified time. Lighting indicator: High brightness passing indication. Anti-follow function
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    petroleum drill bits types - 2 views

    www.greatdrillbit.com/...petroleum.html petroleum drill bits types
    shared by greatdrillbit on 15 Jul 20 - No Cached
    • greatdrillbit on 15 Jul 20
       
      GREAT has advanced optimized parameter drilling software, using electronic computer as the means, using optimization method, will affect the drilling speed of various controllable factors (such as drill bit type, bit pressure, rotation speed, mud performance, hydraulic factors), according to the minimum cost principle to establish a mathematical model, program.
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    spin scrubber electric cleaning brush - 1 views

    www.wmjs-3d.com/...spin-scrubber-brush.html spin scrubber electric cleaning brush
    shared by wmjs-3d on 21 Dec 21 - No Cached
    • wmjs-3d on 21 Dec 21
       
      The electric spin brush scrubber/cleaner can rotate strongly, up to 160 revolutions per minute, which can effectively remove dirt. This cordless cleaning brush is waterproof and can be immersed in water 15 cm deep. The cleaning head of the electric spin scrubber cleaning brush is easy to replace and is very suitable for cleaning kitchen faucets, pans and other appliances. Rotary electric cleaning brush with ergonomic anti-skid handle.
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    domestic vacuum cleaner - 0 views

    www.wmjs-3d.com/...cuum-cleaner-for-home-d22.html domestic vacuum cleaner
    shared by wmjs-3d on 21 Dec 21 - No Cached
    • wmjs-3d on 21 Dec 21
       
      15KPa HEPA Filter Handy Stick Vacuum Cleaner Cordless 2 in 1 for Home Handheld vertical cordless multifunction 20W effective suction power,9000 Pa powerful suction. 270 degree rotation electric brush,easy to reach every corner Built-in 2200 mAh Li-battery up to 45-min runtime Come with multiple brushes, anti-mite brush, floor brush, hair brush 0.8L detachable washable dust box , more convenient to clean
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    floor cleaner robot price - 0 views

    www.wmjs-3d.com/...robot-vacuum-for-floors-16001 floor cleaner robot price
    shared by wmjs-3d on 21 Dec 21 - No Cached
    • wmjs-3d on 21 Dec 21
       
      Intelligent and rechargeable Has 3 in 1 function of Sweeping, Vacuuming, Wet/Dry Mopping. Provide strong suction both on hard floor and carpet. Easy operation, only pressing the button, it will work 2 sides rotating brush sweeping the hair, dirt dust more effectively Inside dust collecting box can removable and clean Wiping cloth can use for dry and wet, make the floor clean Low noise design (below 55 dB)
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    Tips To Take Care The Hardwood Flooring For Common People - 0 views

    writeupcafe.com/ood-flooring-for-common-people Carpet company Prince William County hardwood flooring Loudoun
    shared by premierflooring on 03 Jul 23 - No Cached
    • premierflooring on 03 Jul 23
       
       Sweep or vacuum your hardwood floors regularly to remove dirt, dust, and debris. Avoid using vacuums with rotating brushes that can scratch the surface. Additionally, use a microfiber mop or a slightly damp mop to clean the floors, but avoid excessive moisture.
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    centrifugal blower fan - 0 views

    www.cooling-fan.com/f-centrifugal-blower-fans.html centrifugal blower fan
    shared by jhhearing on 05 Feb 24 - No Cached
    • jhhearing on 05 Feb 24
       
      Centrifugal blower fans are a type of mechanical device used to move air or gas through a system. They work by using a rotating impeller to generate airflow, creating pressure and pushing the air in a specific direction. Centrifugal blower fans are commonly used in various industries for ventilation, cooling, heating, and air conditioning purposes. In this article, we will explore the basics of centrifugal blower fans, their propelling performance, broad applications, and the latest innovations in their technology.
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