Understanding Focal Length and Field of View - how to calculate the focal length of a lens

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Objective: To develop a comprehensive, descriptive taxonomy of self-management support components.

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Let us know how that type of bulb works out. Be aware though that the protective glass casing on the fixture may allow significantly less UV to reach the instrument.

I added a 100w black light (60+60+100=220w total) the temperature is still acceptable. I will maybe buy an other 100w ( to get 320w). Then it cost a bit when running during severals weeks ( but not much in regards to the instrument)

20231023 — F-number is defined as the lens focal length (f) divided by the lens aperture diameter (d). It defines the size of the cone of light that is focused on the ...

I've just bought a grow tent for my violin drying and saw this thread. I'm just wondering whether this 50w UVA floodlight would be enough to dry the violin https://www.ebay.co.uk/itm/324342581015?_trkparms=ispr%3D1&hash=item4b84530717:g:S0QAAOSwBsRfj~Ar&amdata=enc%3AAQAGAAACgPYe5NmHp%2B2JMhMi7yxGiTJkPrKr5t53CooMSQt2orsSvhAqMt0wg86xg8aAkgjQJI7vyLyhSi%2FyxnotyvsJEBtSEr%2BAVTxcsMD6nvzrbDbjFSw8xJx80StHuJ3u%2BfwKOOUaYgS1wHYaTma4spgNmpz9PcKe5sKrnhAdNs9rQJZWl%2BT8kWhKK7E%2Fp0UMPhwm3aSY1Gc%2Fur8RGprgoMPBgVDrXjxi2scyKpL9i%2FmVJWnnu7LBO0pGAdEuSdAOH1DAvwsuAK4VrWrCbU%2FGzjm6Fc2hWiRtBH2pXmtdbjLKG3YU2qZ2A1j5G5mdDh2NPAf3DB%2BLuaBMPnYDQU2sNiJCtumsUjU%2Bll3%2BKOEjzndN8CC9lwzARQnPQfLm8aTXpri%2FwFSXhX0c%2FKwnQf2g%2Fpppq9L%2F9hzr5Z%2BFR4fp6fSsRWUVjIS7FkpVsQ9SxvJTkowLumHszALx9PGbIWJ9XjV2PLJwisSnf5I4m1cZq2ue%2Bd2emFLUxJDn72P4jm3eQXnJAh7Tr5n5JsZTw3RjUIpoxbRICRi%2BX5Bv1mG1z%2FZV1h%2Boou44LRuzlQI8mtJ7Zp8IaPPR00ppwJzNyPEDXMPrA7PX%2FsZj1T59gb2W3zX%2FAiF7vTbKxmjp4nujjHDsuoK7tYuYFsDXGMi7mdi%2FE9YoZqFUcZ7ilOBiJm4mS97ZfWkduBaKVzN85%2FCIFj0uMH%2B2eZu%2FGCo3EyevJEWnOAVnFEaS%2F5w9HaJswaWq15CSQpr0diLkqTiyrIRuA1ndI5ybZY3RcJpG0TNFcIL8py9YrWk8yQwqQxueFUU7EIC0Tveu5paNroBhpdGWeCD4znKgD9X1S%2Fank0bDJAjdElVzK%2F0%3D|ampid%3APL_CLK|clp%3A2334524

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the long and the short of it is that there are pre existing products out there that will work for the box instead of having to build and then line one with reflective material

MMOBIEL UV LOCA Liquid Optical Clear Adhesive - Glue Adhesive Transparent TP-N1000 speacially designed for cell phone screen Repair: MMOBIEL Liquid Optical ...

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Your drying chamber won't necessarily dry varnish faster than sunlight. The advantage is that you don't need to worry as much about bird poop, insects sticking to the varnish, rain, cloudy weather, high winds, the radiant heat from direct sunlight, theft, or the neighbor kids mistaking your hanging violin for a pinata.

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Conclusions: The PRISMS taxonomy offers a framework to researchers describing self-management support interventions, to reviewers synthesizing evidence and to developers of health services for people with long-term conditions.

Methods: Components were derived from the 969 unique randomized controlled trials described in the 102 systematic reviews and 61 implementation trials, examining 14 diverse long-term conditions included in the Practical Reviews in Self-Management Support (PRISMS) project followed by discussion at an expert stakeholder workshop. The utility of the taxonomy was then tested using a self-management support intervention for cancer survivors.

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the frame of the grow tent is made from metal tubes so there are plenty of ways to suspend the instrument and lights...two lamps on the floor, two lamps suspended , with the instrument hanging in the middle works well, or you can search Joe Robsons posts {using google} he has a cool way of rigging a steel garbage can to turn it into a good drying "box"

but LED lamps in all spectrum, in this case black uv, are the way to go now, far superior type of lamp, the one I got were black lights they would sell for parties , flat panels , about 6"x 10" with a small frame that allows you to prop them up, WAY powerful and dries uv reactive finishes very well

We have motorized linear stages having just 5 mm traverse to 1000 mm traverse with varied specifications with respect to load capacity, drive mechanism, ...

I'm trying to keep costs down, so I ended up buying https://www.ebay.co.uk/itm/403129598363 this 40w black light bulb. I have a car inspection light which I can hang in the grow tent and it has a protective glass encasing so hopefully it won't get too hot.

Please find the best lens for the photo you wish to take with your α. With the lens selector, you can select a lens suited to the photo and compare ...

And they can be closer if you want, just depends on how much of rush you are in I suppose....close enough where the cello can spin, but not hit a light.

the chamber is cheap, lamps are not cheap. I have no idea if the small lamp as asked above work fine - their function seems to be heat production. The big led panels have ip66 Label which for sure contribute to their cost.

Results: The PRISMS taxonomy comprises 14 components that might be used to support self-management (e.g. information about condition/management, provision of equipment, social support), when delivered to someone with a long-term condition or their carer. Overarching dimensions are delivery mode; personnel delivering the support; intervention targeting; and intensity, frequency and duration of the intervention. The taxonomy does not consider the effectiveness or otherwise of the different components or the overarching dimensions.

the actual distance of the light face to the instrument can be quite close but I was using about 4-6" off the instrument

Unfortunately there are lots of variables, like for one, the varnish, who's or what is it? Do not expect any varnish that NEEDS uv to dry to dry fast, except modern varnish like zero'res. Conifer linseed based varnishes are notorious for being slow drying varnishes , and that as long as it dries tack free {you can place your hand on it for a minute and then pull it off with no sticking or imprinting} your doing good, hell your doing great, eventually you can make up some sherpas in the mountians story about all that dry time needed for these special varnishes and charge to watch paint dry...but in the mean time if you are getting your varnishes to dry in your dope growing tent as fast as you can get them to dry outside you're doing great! but you know some gentle air flow isn't bad

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In general, near-infrared cameras are preferred over visible cameras for detecting damages and bruises – especially in fruits, vegetables, and food items.

I measured the temperature on my 4ft tubes and found that the tube and the electronics were each 10C above ambient temperature while the metal casing was at ambient. Considering the small surface area of the electronics compared with the tube I thought it wasn't worth the effort of rewiring, and fitted a small fan. Now I run all 4 tubes with no water dish and wick and don't worry about temperature and humidity.

the tents have ports for fans and some vents, if you leave them open it makes it so the tent gets warm , but not hot, generally aids in drying, particularly in winter months

Keywords: complex intervention; dissemination; implementation; long-term condition and chronic illness; self-management and self-care; taxonomy.

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Glass Dynamics, offers a myriad of glass materials. Physical properties for Borofloat.

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edit; also, keep in mind, that larger objects with more varnish, {than a small violin}in enclosed spaces , will be out gassing much more solvent and in general dry slower as oxygen crosslinking will be hampered by the solvent vapor displacing the oxygen in the local vicinity of evaporation

You may need more lights for a cello, to dry "quick" ,it should dry as is, but you could put a couple more on a cello, my original advice was thinking it was a violin, but I think the grow tent is the way to go for guitars and cello, or multiple violins . Seems like its working out good.

There are a lot of different options nowadays, but I honestly think normal fluorescent UV tubes (black or not) are still the best. If they are long enough they still ensure the best light diffusion, and if the rheostats are kept outside the box they are probably still the ones that heat the inside less. They are probably also the cheapest, but I'm not sure of this if you also consider the complete electrical system to be done to bring the rheostats outside.

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I would buy a cheap grow tent {if you can in france} and then I would go get 4 led uv black lamps...they give off just the right heat {much less than regular lamps} and use much less electricity

uv lights in general are much cooler operating than other lamp sources, but these ones do generate some heat, most of which seems to pool in the back of the light housing

by DM Aikens · 2010 · Cited by 26 — And for almost as long, people have been trying to use this cosmetic standard to control surface imperfections on precision optics, where scratches and digs ...

as I do not know these lights you have, I would test run them to make sure they dry well {varnish test scrap} as well as get an idea of how hot they get your tent, smaller tents may get too hot and may need to be fanned or to leave the zip flap open.

due to this fact I suggest making sure that if you are hanging them, make sure the backs do not have direct contact with the tent, the ones that you put on the floor I suggest putting on some dinner plate or a piece of tile or something to buffer the light from the floor, as a precaution

Jul 12, 2017 — Numerical aperture (abbreviated as 'NA') is an important consideration when trying to distinguish detail in a specimen viewed down the ...

Background: Supporting self-management is a core response of health care systems globally to the increasing prevalence of long-term conditions. Lack of a comprehensive taxonomy (or classification) of self-management support components hinders characterization and, ultimately, understanding of these frequently complex, multi-component interventions.

I lined an old kitchen cabinet with aluminum foil and mounted 2 3OW LED "party" blacklight floodlights. Thoroughly dries a violin in 4 hours.