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Recent content by bostjan

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    Hi

    Hate to be the discouraging sayer of nays, but this: is daft. You're much more likely to harm your fish than the aiptasia. Just get some lysmata wurdemanni or use a chemical treatment.
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    Politics and General Debates Thread

    To answer the first question, yes, they exist. Dave Chappelle introduced the idea as a joke in his sketch comedy show with Clayton Bigsby, a blind man who didn't know he was black, and went on to become a powerful leader in the KKK. However, there is a real life analogy to this, except, the...
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    Politics and General Debates Thread

    Ok, that's some data. I have some problems with their methodology categorizing motives, but it's a very complicated tangled mess. But, let's assume for argument's sake that your source is the Bible and go from there, at least for now. Here's what you said that I objected to: Absolute claims...
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    Politics and General Debates Thread

    That's not entirely accurate. I'd like to stress, though, that, even though you are wrong, it doesn't mean that the rioters involved in the January 6th insurrection were any less violent. The fact is that violent extremism is violent and extremist regardless of whether the people behind it are...
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    Focus and Perspective

    Hi! I'm relatively new to holography. I've made a handful of decent ones myself with red diode lasers and red HeNe. I'd really love to be able to make some green holograms, but I can't seem to find a complete OPSL or acceptable green diode/DPSS laser for holography. I'd love to hear any...
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    Politics and General Debates Thread

    I think going all electric will not be the ultimate goal. But, there are a few things to note: 1. Fossil fuels are non-renewable. At the current rate of consumption, all proven oil reserves would be depleted in a couple decades. There are obviously more than just the proven reserves, but a)...
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    Will there ever be a brown laser ?

    Where can I find info on that hologram?
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    Politics and General Debates Thread

    I mean stupid and violent, like those protest against Trump and likewise the Jan 6th protests. Neither party can claim to hold the monopoly on stupidity nor on violence. The 2nd Amendment is one of the ones that is widely misinterpreted by both parties. Our entire bill of rights is infringed...
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    Politics and General Debates Thread

    You guys think that it's outside the realm of possibility for a demented old man to be elected?! I agree that very few people actually liked HRC. But keep in mind that virtually no one on the political left liked Trump either. Nobody actually liked Biden, but dislike for Trump only grew over...
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    Looking for a LPM

    Buy nice or buy twice!
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    Politics and General Debates Thread

    It's a mess. It's practically impossible to prove a negative, so you can't really feasibly prove that the election was not fraudulent. However, the evidence that is presented often doesn't pan out. So, either it's false stories about how the election was stolen or someone is really good at...
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    Will there ever be a brown laser ?

    The paradigm shift for me was about halfway through the video, when he said that colours are defined as distinct colours when we make up a word for them. That's 100% true and that's fully the point, I suppose. But let's come back to your original statement: I think there are different...
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    Will there ever be a brown laser ?

    I somewhat disagree with the last part of that. I know wikipedia says brown is just dark orange, but no. Dark orange is dark orange. Brown is dark tan. Tan is a desaturated colour. If you take RBG and you mix in mostly red light, a fair amount of green (but markedly less than red) and a...
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    Hypothesis: Wavelength limit perception correlation

    980 nm LEDs appear invisible to me. 940 nm LEDs appear extremely dim. 850 nm LEDs, to me, are just like regular red LEDs, but less intensely bright. My 808 nm lasers are perfectly visible, even at low power. On the other end of the spectrum, I have some UV LEDs, but they are rather high...
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    Will there ever be a brown laser ?

    I have a bin full of brown diodes. I'd sell you one, but, since I'm such a nice guy, instead, I'll tell you how to make one. Take a blue diode, and drive it with too much current. The blue colouration will come out of the diode in the form of smoke. Voila! What's left is a diode that is...




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