Is this Dogs Bottom
"Here’s a simplified light path of a fluorescence microscope. We start with a high-intensity mercury lamp that produces white light. But we don't want all that light – just the blue part. So, we use an exciter filter to let only blue light through. This blue light is then directed onto the specimen. The fluorochrome-stained parts absorb this blue light and emit green light. A dichroic mirror helps in this process by reflecting the blue and letting the green light pass through. The green light then reaches our eyes or a camera, showing up against a dark background. Pretty cool, right?"
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Disclaimer
The information and publications are not meant to be, and do not constitute, financial, investment, trading, or other types of advice or recommendations supplied or endorsed by TradingView. Read more in the Terms of Use.