12.05.2015
Your use of this website constitutes acknowledgement and acceptance of our Terms & Conditions. Although our visual system can paint a vibrant portrait of the world, its palette of colors is actually quite limited, as we only see between 390 to 750 nm of the full electromagnetic spectrum while the remaining trillion wavelengths escape our view.
Truss on Sale Sale Used New Learn 800-268-5520 Call or chat with us now! This 2 in 1 UV (Ultra Violet = Black Light) and Blue inter-switchable CCFL kit differs from all these CCFL kits on the market that it contains two light sources, one bright blue for daytime view and one UV blue for night vision. Some of you are just ordering professional made PCBs, that is not always worth of cost, other are using easier way – Laser printer toner transfer technique which is not very accurate, third option is more advanced – ultraviolet light exposure of photo-resist coated PCB through film mask. We have used our 15" neon tubes behind TV installations very effectively and with a durable lifespan of over 3 years on . With the handy switch on the PCI back panel, you can control the light sources at your choice for bright blue lighting or for UV blue illumination. Neon tubes are great to use in locations where light needs to be dispersed onto a large area and a general glow is wanted. However, it turns out that the tuning curve of the red receptor in bees is shifted up such that they are red-blind, but see ultraviolet light. That change in color gives nature another way to evolve its marketing campaign and attract more business.


For instance, flowers have evolved to provide bright UV petals surrounding a dark region contrasting containing glowing UV pollen.
As embedded part of this project is a count down timer with LCD built on AT90S2313 AVR microcontroller which can be replaced with newer ATtiny2313.
The second image is only UV light, and as you can see, the center target is vastly larger than the version we see and you can make out a faint UV glow in the center. Being red-blind, bees would see the third image, which is composed of UV, blue, and green (UV+B+G). If the UV colors and patterns in a flower helps guide bees to pollen, then more flowers with UV features would procreate. Required fields are marked *CommentName * Email * Website Notify me of follow-up comments by email. Klaus Schmitt of Weinheim, Germany is an expert in tetrachromatic photography and has taken all of the photos in this article. He explains: "Some flowers found a tricky way, they create a landing platform for bees and bumble bees, consisting of concentric rings with a bright UV reflective center highlighted by contrasting petals around it.
Simple, we don't pollinate flowers, so the flower has evolutionary incentive to attract us towards it's pollen." To see a stunning view of the concentric rings in flowers, check out Dr.
Although it would be impossible to show exactly how this extra receptor affects the way a bird sees the flower, other colors can be used as a metaphor for UV to produce the stunning simulation of the tetrachromatic flower on the far right.


As you can see from the images below, the birds, like the flowers, have evolved to display a stunning set of colors invisible to the unaided eye. A study by Bennett, Cuthill, Partridge, and Lunau (1997) showed that ultraviolet reflecting plumage in starlings had profound effects on observed mating preferences, while plumage in the human visible spectrum did not predict choice. Since women have two different X chromosomes in their cells, it has been suggested that some of them could carry a variant cone cell tuned to a wavelength between the red and green, thereby having tetrachomatic vision and discrimination across 100 million different colors. Having more color receptors provides better color discrimination for quick decisions over food and mating. Although some species, such as butterflies and pigeons, have five types of photoreceptors and can distinguish over 10 billion colors, the advantage to having more receptors reaches a ceiling around three to five. In fact, many human males have color blindness leaving them with only two color receptors (dichromacy).



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Comments Uv ultraviolet lighting machine

  1. add
    The surrounding plastic material is softened and welded.
  2. sex_baby
    Anything within five seconds dry out very quickly, such as super glue, generally each.
  3. admiNeo
    And cause it to glow, called kit comes.
  4. RUFET_BILECERLI
    White but can be stained the resin and hardener.