06.06.2016
Before coming in for their first LED Gel Nail Treatments, some clients want to know: What’s the difference between LED and UV Gel Nails?
Basically, the difference lies in the gels’ ingredients and the light needed to cure, or dry, it.
Our gels are made from a formula designed to respond specifically to LED light wavelengths, which dries the gel in 30 seconds. The end result a€” base coat, two coats of color plus one top coat a€” looks no thicker than nail polish and stays on your nails for at least 10 days. The response by lamp makers was to go to a single large LED chip (or large matrix of chips), and add massive heat sinks to address the thermal issues created by using the large chips. The Swedish government, with support from the Belgian government, CLASP’s European Programme and the European Council for an Energy Efficient Economy submitted a report on November 19, 2014, to the European Commission and the Consultation Forum to highlight the emerging trend of the LED Filament approach as used in a new breed of LED lighting products. Even with this positive report, Filament LED products have been slow to be adopted in the North American market for two reasons.
Beyond their similarity to the original Ushio filament lamps, there are actually many novel and effective design elements in the new wave of Filament LED lamps, which make them superior to first generation LED lamps. One area to note is that using low-grade silicone to cut cost is a common practice among many of the LED filament lamp makers in China. First generation LED lamps are typically built with large size LEDs, then they are driven with high current for maximum performance. It is noteworthy that even traditional LED lamp makers like Cree recognizes the advantages of a classic incandescent lamp appearance, which is why they have introduced the 4-Flow product line incorporating an incandescent lamp shape with simple air convection for cooling. You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner. Philips Lighting, a global leader in lighting, today announced the launch of the latest innovation in its Philips Hue family, a motion sensor which enables you to control your lights through movement in your home.
DPST (Digital Printing Solutions & Technologies) announced the launch of their new card personalization systems with front and back (duplex) DOD imaging with Phoseon's FireFlex UV LED curing lamp. Phoseon Technology is the leader in UV LED curing solutions for commercial and industrial applications. Although, on average, stars are white in color, there’s a very important reason for that. Inherently, there isn’t anything special about those wavelengths of light, save for the fact of where we are.
This means that stars that burn at hotter temperatures than the Sun will appear bluer, while stars that are cooler will appear progressively yellow, orange, and even red. As colorful as the stars in these images are, though, they don’t quite explain everything.
This great nebula, as seen up close, actually shows off the two major colors visible to human eyes found throughout dusty regions in space. It turns out that regions of space that glow red are a little more common, but regions that glow blue are abundant as well.
The famed horsehead nebula, above, is a dusty, dark outline surrounded by a red, glowing region.
The way you ionize an atom is you knock an electron off of the atom, and the hotter your nearby star is, the more hydrogen it can ionize! You’ve got a region of space with an abundance of both ionized atoms and free electrons. Most of the light that gets emitted is ultraviolet light, but of the light that is visible, most of that occurs at a very particular wavelength: 656 nanometers, which appears to our eyes to be a bright, red color!


So when you see a diffuse, reddish glow coming from outer space, that’s evidence of hydrogen gas surrounding hot, young stars. In fact, if it weren’t hydrogen gas that surrounded your very hot star (or stars), but a myriad of heavier elements, you would get a completely different set of colors. Although the Pleiades is a region filled with young, blue stars, they’re not quite hot enough to ionize the atoms in the space between its stars!
So when light runs into the neutral (not ionized) gas, the red light mostly passes through, with only a little bit reflected, while the blue light gets scattered in all directions, including towards us on Earth! And that’s how hot stars, hydrogen, heavier elements and light-scattering dust, combined with the light from all the surrounding stars, conspire to illuminate the depths of space with the full spectrum of visible light! If this has you imagining what you’d see if, instead of that tiny portion of the light spectrum that’s visible, you could see all the way from Gamma Rays down to Radio Waves, congratulations!
The huge variety of information we can see with our eyes covers just one part in 60 of the wavelengths in the electromagnetic spectrum, on a logarithmic scale! Long time reader whos read all of your archives, and this imho is one of your top 10 writes up ever. Even after all this time, I have no idea which posts are really going to take off and which ones won’t. Still, thanks for the praise and know that personally I’m much more proud of this one!
The star colours aren’t really bright to begin with, and with accurate focus they will be burned white. So if you want to photograph the colours: defocus the camera slightly, and the stars will appear as small disks that retain at least some of the colours at their edges.
You’ve made me now badly -desperately- want to see with my naked eyes beyond the visible spectrum!
Visual observation of slightly defocussed stars will also make their colours appear more clearly. Ethan, I am now just utterly upset that my eyes are so inadequate to fully enjoy the splendor of the Cosmos!
I love the first diagram you have on this page showing the electromagnetic spectrum and highlighting the visible spectrum.
Recent Commentseric on Ten ways ‘Proxima b’ is different from EarthMichael Kelsey on What is the biggest black hole as seen from Earth? Energy efficient light bulbs should have already replaced your old fashioned incandescent bulbs. Dies ist der von diesem VerkA¤ufer angegebene Preis (ohne Verpackungs- und Versandkosten), zu dem der VerkA¤ufer denselben Artikel bzw.
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The common formula has been to use a single, high power GaN chip (or a few larger chips), add phosphor (remotely or directly), and drive the chip(s) with as much power as possible to yield the maximum amount of white light.
Sadly, nearly all of the lamps created over the next several years rely heavily on the use of bulky heat sinks to handle the thermal management issue, and therefore provide only 180 degrees of flux geometry. One Filament lamps maker, AXP Lighting, has developed a novel phosphor deposition process which eliminates blue light leakage.
This does confirm that lamp manufacturers acknowledge the desire for a classic Edison style lamp which is what consumers really want in their homes.
The FireFlex architecture is designed to allow the systems to be scalable in 75mm increments to as much as 2m in length with a variety of peak irradiance and total UV power specifications based on customer and application needs. Our eyes have evolved to see a very narrow set of wavelengths of light, which we know as the visible light spectrum, ranging from violet light at around 400 nanometers to red light at around 700 nanometers.
On the left, the deep blue nebula sharply contrasts with the larger, red glow coming from the right. Believe it or not, it’s the young, hot, very blue stars that cause this nebula to glow red!
Instead, the dust can only reflect the light coming from the stars around it, and so these blue regions are known as reflection nebulae. For those of you inclined towards chemistry, you can mix your own reflection nebula in a beaker, and see how this works firsthand! You’ve just realized why we have telescopes that are sensitive to so many different wavelengths, and why we use false-color composites of all of this different information. So appreciate what you can see and why it has the colors that it does, but don’t believe for a minute that what you see is all there is.
Die Frist ist gewahrt, wenn Sie die Waren vor Ablauf der Frist von vierzehn Tagen absenden. Kontaktieren Sie den VerkA¤ufer- wird in einem neuen Fenster oder Tab geA¶ffnet und fragen Sie den Versand an Ihren Standort an. Wenn Sie auf Gebot bestA¤tigen klicken und HA¶chstbietender sind, gehen Sie einen rechtsverbindlichen Vertrag mit dem VerkA¤ufer ein. The key to the longevity of the lamps is to effectively dissipate the heat that is generated by the large LED chips.
In fact, yesterday’s Astronomy Picture of the Day was a close-up, high-resolution view of that reddish, nebular region in Orion, above.
There’s a whole Universe out there, and every day, science helps us see it and understand it just a little bit more. Der a€zreduziertea€? Betrag und Prozentsatz weisen lediglich auf die berechnete Differenz zwischen dem vom VerkA¤ufer angegebenen Originalpreis des Artikels und dem aktuellen reduzierten Preis des VerkA¤ufers hin.
Only the hottest, bluest stars have enough high-energy ultraviolet radiation to take the neutral hydrogen atoms present in interstellar space, and ionize them. This added degree of control allows the lamp maker to provide a more accurate level of color temperature, and flexibility during the manufacturing process. The downside is that the CRI performance will not be as consistent when using the combination of both blue LED and red LED chips.



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