CS-mount and C-mount lenses are two different lens mounts used for Lynx cameras. As most Lynx timers know, it's easy to accrue many different event-specific ...

LED Bevægelsessensor overflademonteret 180 grader - PIR infrarød bevægelsesdetektor - 230V maks. 300W ; Artikelnummer: AR190101 ; Type lampe: LED sensor ; Indgangs ...

A virtual magnifying glass used to examine digital pages of Robert Hooke's Micrographia (Source: http://archive.nlm.nih.gov/proj/ttp/flash/hooke/hooke.html)

Left: a microscopic view of the tilted facets in a typical blazed diffraction grating. Right: an illustration of the saw-tooth profile of a blazed reflection ...

The input light going into the linear polarizer filter is known as being randomly polarized (I prefer that term over unpolarized light because all light is ...

5: prinzip einer Standard-Koaxial-. Beleuchtung. sultierende Kamera-Bild am Beispiel einer. Münze. Dunkelfeld-Beleuchtungen. Diese in Abbildung 4 gezeigte ...

Dec 20, 2022 — 2-in-1 Magnifying Glass. Brightech manufactures a 2-in-1 magnifying glass that comes in a hands-free design and offers 25x magnification. This ...

An antique magnifying glass imaged on the Powerhouse Museum website with Zoomify software, a form of virtual magnifying glass (Source: http://www.powerhousemuseum.com/collection/database/?irn=49001)

13 Things 2008 home schedule 2008 course members 2008 message board 2008 projects 2008 Joukowsky Institute for Archaeology

We have developed all-solid-state continuous-wave diode end-pumped Nd:YAG and Nd:GdVO4 lasers that were passively Q-switched by Cr4+:YAG saturable absorbers. The Nd:YAG laser delivered laser pulses with 138 mJ maximum energy and duration of 42 ns, with 3.3 W average power at 1.06 mm for 13.3 W of pump power at 807 nm. An average power at 1.06 mm of 1.4 W was obtained from Nd:GdVO4 under pumping with 7.2 W power at 808 nm. The pulse energy and the pulse duration were 41 mJ and 40 ns, respectively, which correspond to 1 kW pulse peak power. The laser pulses characteristics are discussed for Cr4+:YAG saturable absorbers with different values of the initial transmission.

Resolution Test Targets · Ideal for Detection of Focus Errors and Astigmatism · Frequency Range at Target Center (lp/mm) 7.14 - 229.2 · Available on White ...

Sep 2, 2016 — AlentejoSkies ... I bought this scope for my four year old daughter. She loves it. I don't... Pros: You can put stickers on it. You can see the ...

The longevity and consistency of the structure of the magnifying glass over the years has allowed the magnifying glass to become iconic. This aesthetic value relies on "the absolute mechanical perfection of the design” according to Latour (301), a theory echoed by Leroi-Gourhan. Although on a much smaller time scale, a parallel can be drawn between the ax in Leroi-Gourhan's 'Gesture and Speech' and the magnifying glass; the ax obtained its ideal form early in its development, and therefore its structure remained relatively constant over time. The magnifying glass also developed early on as a practical method of magnification and its consistency of form has contributed to its value as a symbol. A tool whose form is ideally related to its function obtains an aesthetic value, a trend readily observable in the magnifying glass whose form has provided a basis for many other optical tools (see Improved Magnifying Capabilities). Magnifying glasses became symbols of intellect and connoisseurship, as is evident in art of the eighteenth century which often depicts magnifying glasses in order to convey knowledge and intellect. Today, virtual images of magnifying glasses are utilized by search engines, indicative of a close examination of the internet, and in magnification tools utilized in imaging software.

Joukowsky Institute for Archaeology & the Ancient World Brown University Box 1837 / 60 George Street Providence, RI 02912 Telephone: (401) 863-3188 Fax: (401) 863-9423 [email protected]

By use of a laser diode as a pump source, a self-Q-switched laser from a Cr, Nd:YAG crystal is demonstrated. The output Q-switched traces are very stable, the threshold pump power is 3.5 W, the pulse duration is 50 ns, and the slope efficiency is as high as 20%. In addition, the pulse width remains constant while the pulse repetition rate varies with pump power.

The magnifying glass is situated amongst a host of other magnification technologies. The majority of these technologies share many optical principles and purposes; specifically, to image objects at an increased resolution and magnification than is possible with the human eye through exploitation of the properties of light. The distinguishing feature of the magnifying glass is its structure—a bi-convex lens (one that is convex on both sides) situated in a frame and attached to a handle. The lens may be constructed of glass or plastic, and the handle of materials such as wood, plastic, and metal. This produces an image of the object behind the lens. Although the magnifying glass has been altered over the years with the introduction of new materials, the basic structure remains the identifying feature of the magnifying glass.

By using a continuous-wave Ti:sapphire laser as a pumping source, we demonstrated a passively Q-switched Yb:YAG laser at room temperature with Cr(4+):YAG as the saturable absorber. We achieved an average output power of as much as 55 mW at 1.03 mum with a pulse width (FWHM) as short as 350 ns. The initial transmission of the Cr(4+):YAG has an effect on the pulse duration (FWHM) and the repetition rate of the Yb:YAG passively Q-switched laser. The Yb:YAG crystal can be a most promising passively Q-switched laser crystal for compact, efficient, solid-state lasers.

The results in research and development of diode-pumped passively Q-switched Nd:YVO4 lasers are presented with Cr4+:YAG crystal used as an intra-cavity saturable absorber. Using a-cut Nd:YVO4 laser crystals, the passively Q-switched lasers have been successfully developed and provided stable single shortest pulses of 40 ns at the repetition rate of 18.5 kHz, the maximal average output power of 180 mW was achieved corresponding to the optical efficiency of 9% and the slope efficiency of 16%. The dependences of average output power, repetition rate, pulse width and peak power on pump diode power for different transmissions of output mirror are also investigated.

Large Microfiber Lens Cleaning Cloth. Our large Ultra Fine Microfiber No Scratch cleaning cloth is great for larger cleaning applications like windshields, ...

(Source: http://www.orientaltrading.com/, http://upload.wikimedia.org/wikipedia/commons/8/80/Magnifying_glass.jpg, http://www.onlinesciencemall.com/Shop/Control/Product/fp/vpid/1787672/vpcsid/0/SFV/30852, http://antiquescientifica.com/ophthalmic_magnifying_glass_chatelaine_sterling.jpg)

If the letters of a book, or any minute object, be viewed through a lesser segment of a sphere of glass or crystal, whose plane base is laid upon them, they will appear far better and larger.

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Metric Hex Bolt Dimensions. METRIC-Hex-Bolt-and-Nut-2-big1-300x148. **All measurements in millimeters**. NOMINAL SIZE (D), BODY DIAMETER, HEAD THICKNESS, ACROSS ...

Despite long term maintenance of the magnifying glass’s physicality, new structures for the magnifying glass have been developed as the purpose and scope of the magnifying glass has changed. Virtual magnifying glasses have become a necessity, and software such as Zoomify allows the close examination of digital images. Historically, the magnifying glass has seen vocational use in textiles, such as thread counters. Today, jewelers and dentists use forms of magnifying glasses that have become more technologically advanced over the years. Mass production of plastic magnifiers has allowed for wide-spread utilization in science classrooms. Lighted magnifiers, page magnifiers, clip magnifiers, in addition to many other forms of magnification, have adapted the structure of the magnifying glass to specific purposes.