Tritium Lamp, Vial, Tube, Capsule, Trigalight - 22.5mm x 3 mm - Glow in the Dark

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Seller: m_nuclear (8,222) 100%, Location: Cornwall, Ships to: Worldwide, Item: 141307746305 PLEASE READ THE ENTIRE LISTING BEFORE BUYING; IT IS VERY IMPORTANT - ESPECIALLY THE SECTION HEADED "WHAT COLOURS ARE THERE AND HOW BRIGHT ARE THEY" THIS LISTING IS FOR ONE 22.5MM X 3MM TRITIUM LAMP ONLY(the images for this listing show several). Know what you are buying before you buy! It is very important that you read the entire listing before buying so that you know what you are buying, and are sure this is what you want or need; so, please read the listing and if you have any questions, please ask before you buy. We have tried to include as much useful and necessary information as possible in this listing, without trying to blind you with science or bore you with waffle. We are more than happy to answer any questions you may have before you purchase, but PLEASE read the listing carefully as we will refer you back to the listing if you ask a question which is already answered below. The Tritium Lamp (Trigalight) what is it and how does it work? The Trigalight is a gas tritium light source or GTLS developed in Switzerland; it requires no batteries, neither does it need charging from sunlight or any other light source before it will work - it is a completely self-contained power source. The Trigalight is composed of a laser sealed borosilicate glass tube which has a special phosphor coating on its inner surface and has been filled with a small amount of tritium gas. As the tritium decays the beta particles emitted by its nuclei strike the tube's phosphor coating causing it to emit visible light. By varying the type and combination of phosphors used it is possible to create tubes which emit different colours. The excitation of phosphors by electrons (beta particles) used in the GTLS is the same principle used to create the television picture in the old cathode ray tube televisions, only in the case of the GTLS the electrons are provided in the form of beta rays by the disintegration of the tritium nuclei. Tritium has a half-life of a little over 12 years so, as long as the Trigalight is not damaged, it will emit light for many years. How safe is a Trigalight? As the electrons produced by the gaseous tritium are so low in energy, they are unable to breach a sheet of paper or to penetrate human skin. Can a Tritium Lamp be damaged or stop glowing? Yes, a Tritium lamp is made of glass so it can be damaged and will stop glowing - so care must be taken when handling. WHAT COLOURS ARE THERE & HOW BRIGHT ARE THEY? This is a list of the colours we can supply (subject to availability) and an explanation of the perceived brightness: Green Yellow White Orange Ice Blue Red Pink Purple UV Blue Do all of the colours available appear to be the same brightness? The simple answer is NO they do not, the human eye does not have a linear response to colours and is more sensitive to some colours than to others; so with the Tritium lamps there is quite a big difference between how you will perceive the colours to which the eye is most sensitive and to which the eye is least sensitive. So; which Tritium lamp will look the brightest, and which the dimmest? By far the brightest looking lamp is the Green and the dimmest the UV Blue. If you consider the Green as the brightest perceived then UV Blue will only appear to be about 15% as bright as the Green, Yellow is close to Green and is seen as about 80% as bright as Green. The list of colours shown above was compiled by us when looking at the Tritium lamps in the dark as what we perceived the order of brightness to be, from brightest at the top to dimmest at the bottom; and although there is a large difference between the brightest and dimmest, between some of the colours it was difficult to agree on exactly the order they should be arranged in, if you do some searching on the internet you can find numerous lists of perceived brightness, some agree with ours and some differ slightly. The important thing is: if the brightness IS important then you should select Green or Yellow, if it's not then pick a colour but expect them not to appear as bright. What kind of brightness can I actually expect? Firstly, these lamps are NOT going to light up the room, or give you something to sit and read by. How bright they will actually appear to you will depend on what we've said above and on how well dark-adjusted your eyes have become, for example: if you go from a brightly lit situation into the dark and look at your tritium lamp it won't appear anywhere near as bright as it would if you'd been sitting in the dark for say 10 minutes and then looked at it, it takes time for your eyes to adjust to a darkened room. How much should I rely on the colours and apparent brightness of the images used to create this listing? This question highlights a problem you will always come across when trying to buy something from the internet based on how it looks; in this case the colour and how bright it apears. If you look at the apparent brightness of the different colours in the listing they all probably look about the same brightness, why is this? Firstly, when taking the photographs the camera was set to a bulb (timed exposure) setting so as to obtain an image that was bright enough to be useful. Secondly, cameras, whether film or digital based have a different response to colour sensitivity than the human eye; it is impossible to show how bright these will appear by showing you a photograph on a computer screen. As for the colour it is impossible to give you an accurate representation of how you will actually see the colour, a full explanation of why would be very long but it is basically as a result of the colour gamut's of the different technologies used in bringing you the colours over the internet versus the human eye; so use the colours shown in the images as a rough guide only. Some of the colours actually look quite similar to each other in real life, the UV Blue is supposed to be a rough approximation of the colour of an old black light lamp (blue with a hint of purple) and looks quite similar when compared to the purple lamp which may not be apparent on the images, where it appears more blue. So as we said, please use the images as a rough guide only. WHAT ARE THE DIMENSIONS? The Tritium lamp is a laser sealed borosilicate tube 22.5mm tall and 3mm diameter (approximately 0.89 inches tall and 0.12 inches diameter). All dimensions are approximate. THESE ARE NOT TOYS AND ARE NOT SUITABLE FOR CHILDREN Shipping times.This is important, products being shipped internationally can take much longer to be delivered in some cases than the delivery times ebay states, the delivery times given by ebay are based on Royal Mail's estimated delivery time to the target country NOT the recipient, once the shipment has arrived in the target country it has to clear that country’s border controls/customs before it is handed over to that country’s postal system for sorting and delivery.We have absolutely no control over other country’s customs/border controls or postal system or how long it may be in their system.Customs are perfectly within their rights to open any packages and inspect them and we have no control over this.We also would like to point out that you are responsible for any additional import duties/taxes on the items.Some country’s border control/customs can take up to 45 days to clear items.You should also check to see if there are any delays or issues with your country’s postal system that may cause additional delays, and please bear in mind that at busy times it can take even longer for post to arrive for example as Christmas approaches.If you are an international customer and are not willing to be patient with delivery times and understanding of the fact that we are at the mercy of your country’s customs/border control and postal system, then please do not order.Why all of this, we try our best to give a good professional service and most people understand the issues involved, but some don’t or won't, and spoil the ebay experience. So from the MAD nuclear scientists, thank you in advance for your patience and understanding. Condition: New, Modified Item: No

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