7/6/2023 0 Comments Rebaslight making a dark saberThese lasers can also produce a single colour and each laser will only work in a very narrow wavelength band. It is a prime feature of all lasers that they can only be designed for one wavelength (or colour). I would suppose you could have different coloured lasers (say R, G and B) accurately aligned to each other to give the impression of a single beam that could produce any colour by changing the relative intensity of the lasers. What we observe as a colour is because the human eye has receptors that respond to different wavelengths. #Rebaslight making a black laser tv#Ī TV only uses Red, Green and Blue but gives the impression that you can see Orange, Yellow and Violet too. This is because the receptors' bands overlap quite a lot so that light at a wavelength between Red and Green stimulates Red and Green receptors and the brain interprets this in the same way as if it were a single wavelength between Red and Green. What we see as a spectrum of colours is made up of the colours R, G and B. As Chemistry4me implied, you can't have black as black is the absence of light. Well I suppose you could switch the light source off and, if there were no other light sources, you would have black. But you cannot have a beam which somehow negates the presence of other light sources in the way you mean.Ī laser beam is defined as being a single wavelength coherent light. So a laser can produce pure "rainbow" colors, but not "mixed" colors like brown, cyan or magenta. In practice, lasers do not produce exactly one wavelength - they typically produce several closely-spaced wavelengths, which are a submultiple of the length of the laser cavity. But these wavelengths are still so close together that the human eye cannot distinguish them. Where high spectral purity is important (eg long-distance telecommunications), you can couple a second cavity so that the selected wavelength is enhanced, and the unwanted wavelengths suppressed. Maintain a polite, academic style discussion atmosphere.I work a lot with infra-red lasers, and these are not visible to the naked eye, nor would an ultraviolet laser be visible in a dark room. However, you are encouraged to add links in the comment section whenever you feel a source would help explain your topic. This is why we have a text post only rule. Posts that exist mainly to promote or generate hits/views on sites are not allowed. Users who post sensitive spoilers without including a clear and reasonable spoiler warning at the beginning of their text may be banned. Non-Canon Answers that better explain in-universe phenomena are permissible and encouraged. If you simply disagree with someone, you are expected to explain why. Please only use the downvote button for posts or comments that do not belong in The Maw Installation. We are Text Posts only and ALL Posts should use BOTH the Title and Body of the post to expand on and/or assert.Īll comments should add something to the conversation. Your opinion will carry much more weight if you disclose your reference(s). In universe topics/explanations are preferred, but analysis of Star Wars as a work of fiction is also encouraged.Īll posters are expected to support their assertions. Conjecture about new films, series, or other works is allowed but please base theories on well-established canon or lore. This is primarily intended for discussion of in-universe topics from the Star Wars Universe. Both canon and legends can be discussed here.įor the full list and explanation of the Rules, please check HERE. Similar to Grand Moff Tarkin's secret Imperial research center, this subreddit is for delving deep into the intricacies of the Star Wars universe. A subreddit dedicated to in-depth discussion of the Star Wars franchise.
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