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_febo-draw-with-the-sun-124-smart-solar-energy-becomes-a-paintbrush.webp "A campaign created and managed by Atellani (www.atellani.com).nFebo is a simple tool which allows you to draw with the sun. nIt focuses the sun’s energy onto your chosen canvas, to create a uniquely personal design. It was inspired by the desire to use a basic principle of nature to create permanent works of art.nFebo is much more than a regular magnifying glass, it is a proper tool designed to make your drawing experience really unique. It was designed with the aim of turning nature into beau")
_the-world-in-uv.webp "Veritasium")
_testing-uv-absorption-eyewear-and-sunscreen-with-a-deuterium-light-source.webp "Applied Science")
⏲ 20 minutes 16 seconds 👁 83.1K
_gothenburg-in-another-light-gh3-infrared.webp "Ungraded footage from my DIY fullspectrum sensor-modified Lumix GH3. Shot with the Lumix G 12-35/2.8 lens and B+W 093 black infrared filter (850nm cutoff) all shot handheld. This modified camera has excellent sensitivity to invisible light in the N-IR spectrum down to about 1000nm or so. For reference, the visible spectrum range from 400nm (violet) to 700nm (deep red). This camera can shoot bulb long-exposures up to an hour and is sensitive to both visible, infrared and UV frequencies with the r")
_how-does-a-spectrophotometer-work.webp "BioNetwork")
_top-3-sunglass-myths-facts-about-sunglasses-and-uv-protection.webp "Dr. EyeGuy")
_bundang.webp "Bundang from uv transmission of glass")
_glass-back-to-basics-33-what-do-you-know-about-uv-transmittance-through-glass.webp "PilkingtonTV")
⏲ 1 minute 31 seconds 👁 44
_ultraviolet-rays-124-how-harmful-are-uv-rays-124-ultraviolet-radiation-124-dr-binocs-show-124-peekaboo-kidz.webp "Peekaboo Kidz")
ULTRAVIOLET RAYS | How Harmful Are UV Rays? | Ultraviolet Radiation | Dr Binocs Show | Peekaboo Kidz
⏲ 8 minutes 2 seconds 👁 366.9K
_.webp "from uv transmission of glass")
_what-happens-if-you-focus-a-5w-laser-with-a-giant-magnifying-glass-negative-kelvin-temperature.webp "The Action Lab")
⏲ 8 minutes 26 seconds 👁 4.9M
_ultraviolet-uv-can-kill-bacteria-amp-viruses-learn-the-basics.webp "Bulbs.com")
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