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Not surprisingly, since Edmund started out as an optics company, there are always lots of great telescopes, binoculars and microscopes for sale in its catalogs. I’ve said it before and I’ll say it again: these are the best gifts you can give a kid with a bent for exploring the natural world. Of all the Christmas presents I ever got, I enjoyed the microscope and binoculars best, I think. (I bought my own telescope by saving up my allowance.) The current Edmund catalog offers the Astroscan 2001 wide-field telescope, a 400X student microscope, and US Navy Specification 7X50 binoculars (although, if you prefer, you can also get “Authentic Russian KGB Micro Binoculars,” which are apparently companion pieces to the authentic Russian laser-pointer).

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These are all very traditional scientific gifts, as are chemistry sets, something else you can get from Edmund Scientific…although the packaging has changed since my day. My chemistry set contained chemicals which (I know from personal experience) could be mixed in such a way that they would get so hot they’d actually make a test tube shatter. Now you can get a chemistry set, designed for the Smithsonian Institution by scientists at Princeton University, that encloses each chemical in a protected spillproof bottle, from which the contents are transferred to a spillproof experiment dish by special droppers. The chemicals are all diluted, too.

by SJ Lim · 2015 · Cited by 129 — Complementary metal–oxide–semiconductor (CMOS) colour image sensors are representative examples of light-detection devices.

Sears calls its Christmas catalog the Wish Book, but while it’s true that, as a kid, I spent a fair amount of time each year browsing through its pages of toys, there was another catalog I found even more interesting, not just at Christmas, but all through the year: my own personal “wish book,” the Edmund Scientific Catalog.

There’s the high-intensity fluorescent lantern that requires no batteries because it’s powered by salt water…the battery operated electric-motor-powered plastic submarine, more than a foot long…the hand-held global positioning satellite navigation system that can tell you your position in latitude and longitude at the push of a button…the ES Mighty Magnet that can lift more than 200 pounds (which Edmund touts as being a “must” for a boat to pick up objects you’ve dropped overboard–just don’t get it near your watch or credit cards!)…and all sorts of five- or six- or 11-in-one tool systems that can, in one case, “cut through a penny!”, though they don’t explain exactly why you’d want to.

Optical AccessoriesSee below for optical accessories for the UV Curing LED Systems. The beam diameter can be changed to 9 mm or 1 mm with the CS20A2 Collimation Adapter or CS20A3 Focus Adapter, respectively. One CS20A2 Collimation Adapter is included with each UV curing LED system. While the LED system can be used without an optic, the output light will diverge to 32 mm diameter measured 20 mm from the output.

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Well, I’ve certainly been remiss about updating my own website, mainly because all of my attention has been on Shadowpaw Press. As it is again this time, because there’s a new Kickstarter currently running (just …

Edmund Scientific is a New Jersey company that sells professional optical equipment to laboratories, but it also has a consumer science division that sells scientific items to schools, hobbyists, and anyone else who might have a need for, say, a hand-held altimeter that tells you at all times what your personal elevation is (up to 15,000 feet).

On May 7, I was in Calgary for the joint book launch of the first two titles of the Shadowpaw Press Spring/Summer list, The Downloaded by Robert J. Sawyer and The Traitor’s Son by the …

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The My Flexible Mirror 10X available on AliExpress is designed to offer not just magnification, but also convenience and adaptability. Its flexible neck allows ...

You can have your own home planetarium…get your own three-foot-tall plastic human skeleton, or a transparent man and woman…build a hot-air balloon that will ascend to 200 feet…own an authentic Australian boomerang…construct a solar-powered toy airplane (it doesn’t fly, but its propellor spins around).

Using Driver Unit with Thorlabs Mounted LEDsFor applications that require high power and stability, any Thorlabs mounted LED can be connected using the CAB-CS20 adapter cable to the driver unit of the CS20K2, CS20K3, CS20K4, or CS20K5. The LED can be mounted using standard optomechanical components as shown in the example to the right (top). The parts list is given as an example and can easily be adapted for the space and stability constraints of any particular setup. Please contact Tech Support for help on selecting the appropriate items for a specific application.

Delve into our Fourier-transform infrared ... Spectroscopy; FTIR Spectrometer and ... equipment to provide solutions for a range of analytical problems.

The integrated power density detector enables calibration of the emission time based on the current power density of the LED source. An acoustic signal can also be activated to generate beeps at determined time intervals. The output of the curing system is SM05-threaded; optics can be easily interchanged to produce different beam spot sizes and shapes.

Safety GlassesSafety glasses are recommended when using our UV Curing LED Systems. One pair is included with the purchase of a UV Curing LED system. In addition, Thorlabs offers several pairs of glasses that are appropriate for use with these systems. Please visit our Laser Safety Glasses page for detailed information about each of these items. Since the correct choice of laser safety eyewear depends upon many local factors that cannot be evaluated remotely, including the beam path, light source parameters, and lab environment, we recommend that you discuss your needs with your organization's laser safety officer to determine the best option.

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This year’s Kickstarter to fund Shapers of Worlds Volume V, the fifth in the series of anthologies featuring science fiction and fantasy by authors who were guests on my Aurora Award-winning podcast, The Worldshapers, succeeded, reaching …

It takes money to publish books, and most of that money flows out the door before the book is released and sales begin, so my publishing company, Shadowpaw Press, turned to Crowdfundr to help ensure …

2018920 — Microscope objectives are usually designed to be used with a specific group of oculars and/or tube lenses strategically placed to assist in the ...

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1[uncountable] the act of making something look larger The insects were examined under magnification. ... Look up any word in the dictionary offline, anytime, ...

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I could go on and on, but I won’t. You get the idea. The Edmund Scientific Catalog is a cornucopia of cool stuff, whether you’re a parent looking for the perfect gift for a science-interested kid or a gadget-oriented spouse…or a loyal reader looking for the perfect gift for your favorite science columnist.

Electrical AccessoriesSee below for electrical accessories for the UV Curing LED Systems. The CS20A1 Foot Switch is designed as an alternative means for turning the LED on and off without having to use the controller or software. The CAB-CS20 adapter cable allows the driver in any of our UV curing LED systems to be used to drive our mounted LEDs or fiber-coupled LEDs.

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Thorlabs' advanced UV Curing LED Systems are designed to cure adhesives that need to be exposed to reproducible high-intensity light at UV wavelengths. Complete systems are available with center wavelengths of 365 nm, 385 nm, 395 nm, and 405 nm. Five operation modes allow fine control of the duration and intensity of emission. Up to 10 different settings for intensity and exposure time can be stored in configuration profiles. The integrated power density detector enables calibration of the emission time based on the current power density of the LED.

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Shapers of Worlds Volume IV, the fourth anthology featuring authors who were guests on my podcast, The Worldshapers, is now available everywhere, including directly from Shadowpaw Press. Here’s a handy universal URL with links to …

ATOMIC EXPLANATION OF POLARIZING FILTERS. Polarizing filters have a polarization axis that acts as a slit. This slit passes electromagnetic waves (often visible ...

Compared to conventional arc-lamp UV systems, these LED systems offer many advantages, such as an intense, uniform UV radiation profile and a long lifetime of 10 000+ hours. It requires much less energy, needs no warm-up time, and exhibits low IR heat emission. The system has no moving parts (passive, fan-less cooling) and is maintenance free. Additionally, the source contains no mercury and generates no ozone during the curing process.

Well, I did it again: led the Seven-Sentence Short Story workshop (created by science fiction and fantasy author James van Pelt) at a writing conference, this time, Wordbridge in Lethbridge, Alberta. Here’s the story I …

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*Calculated power density using CS20A3 Focus Adapter (sold separately below). The calculation is done using the minimum LED power. See the Specs tab for more information.

So, you can find things like “Sound Conditioners,” which issue “white sound” to block out street noise, television and stereos, snoring, and more; or, in another model designed for use in the nursery, issue a digital recording of an ultrasound scan of a pregnant woman (the theory being this will soothe baby back to sleep.)

Outside the familiar world of telescopes and chemistry sets, thought, is where I always looked first in my Edmund Scientific catalog, because that’s where the really neat stuff was to be found. It was always stuff I had no conceivable use for, mind you, but that had nothing to do with its coolness quotient. And Edmund Scientific, I’m pleased to note, has maintained its coolness as the years have gone by (much like myself).

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I’m sure that’s very reassuring for parents and has cut down on product-liability lawsuits against chemistry-set manufacturers, but it’s not very appealing to your average 10-year-old boy, who would probably much rather have the “Crash & Burn Chemistry Kit,” “a journey into basic chemical versus physical reactions.” More sensitive types might prefer “The Science of Scent,” a chemistry set that lets you make perfumes with fragrance oils such as jasmine, lily of the valley, heliotrope, apple and peppermint; but I’ll bet the “Slime Kit” (“An introduction to colloids…make pseudo putty, foam and slime, form a starch blob and create cornstarch goo!”) outsells it.

The CAB-CS20 adapter cable (sold separately below), allows the driver unit of Thorlabs UV curing systems to drive any Thorlabs mounted LED or fiber-coupled LED. This flexibility enables our UV curing systems to be adapted for use in more stable or space-constrained setups using our complete families of optomechanical components, fiber patch cables, and fiber optomechanics. We also offer a much broader wavelength selection from deep UV to NIR for both our mounted LEDs and our fiber-coupled LEDs, down to as low as 265 nm and 285 nm, respectively.

The company offers a free catalog, and when I was about 10 or 11, I discovered that fact and made sure, for the next several years, that I always had the latest issue. I think the only thing I ever actually ordered from the company was some prepared slides to look at through my microscope, but I always figured that some day, I’d be able to buy some of the other cool stuff I saw there.

Overcome by a wave of nostalgia, I decided to take a look at what the company is offering now, and maybe in the process, offer up some gift ideas for Christmas. (Some of these items you might be able to get locally, in the Discovery Shop at the Saskatchewan Science Centre, for instance; I’d look there and in your other favorite toy stores first.)

I’d forgotten about it until just a week or so ago, when I saw an Edmund Scientific ad in a copy of Science News, a weekly science magazine I subscribe to. The ad looked just the same as Edmund Scientific stuff has always looked–black and white, tiny print, little photos and drawings that look like they haven’t changed since 1957 (with one major exception: the company now has a website, www.edsci.com, where they feature more than 300 of their most popular items).

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The ever-popular “Amazing Drinking Bird” is still here–the one that, once its beak is dipped in a glass of water, keeps bobbing back and forth, periodically tipping over to take another “drink.” You can also get a Yo-Yo with a brain, which spins faster and longer than any other Yo-Yo, then automatically eturns to the user’s hand; “Moon Blob,” a form of deyhdrated palstic that, once water is added to it, acts alive and will actually crawl up and out of the container in which it’s placed; or one of my favorites, the “Giant Motion Activated Talking Frog,” which is exactly what it sounds like: a foot-long green frog that yells “Ribbet!…Ribbet!” when it detects movement within 12 feet of its mouth.

Numerical aperture determines the resolving power of an objective, but the total resolution of a microscope system is also dependent upon the numerical aperture ...

Using Driver Unit with Thorlabs Fiber-Coupled LEDsFor curing applications with space constraints, a fiber-coupled LED can be connected using the CAB-CS20 adapter cable to the driver unit of the CS20K2, CS20K3, CS20K4, or CS20K5. The LED can be mounted using standard optomechanical components as shown in the example to the right (bottom). We also offer a wide range of fiber collimators to ensure the output is suitable for curing applications. The parts list is given as an example and can easily be adapted for the space and stability constraints of any particular setup. Please contact Tech Support for help on selecting the appropriate items for a specific application.