The hottest Optics Substack posts right now

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How To See Impossible Colours

Everything Is Amazing • 706 implied HN points • 21 Feb 23
🔬 Science Optics Perception Color Theory Vision Neuroscience
  1. By focusing your eyes in a certain way, you can see impossible colors like red-green or blue-yellow.
  2. Seeing colors like Stygian Blue or Hyperbolic Orange challenges our understanding, as they seem darker or brighter than physically possible.
  3. Experimenting with how you view colors can lead to unique perceptual experiences, expanding the boundaries of human vision.

The Devil and the Cerulean Sweater

Maximum Effort, Minimum Reward • 127 implied HN points • 21 Oct 23
🔬 Science Physics Color Theory Optics
  1. The color cerulean comes from the Latin word for sky and should represent the color of the sky.
  2. Rayleigh scattering explains why the sky appears blue - shorter wavelengths scatter more.
  3. Calculating the color of Anne Hathaway's cerulean sweater using physics resulted in a color close to the original, proving Meryl Streep's character in 'The Devil Wears Prada' was correct.

NextSeq 550 Flowcell Notes

ASeq Newsletter • 14 implied HN points • 29 Feb 24
🔬 Science Research Instruments Materials Optics
  1. NextSeq 550 flowcell has a unique design where the gasket sits on the flowcell interface and the glass is thicker than other instruments, possibly for stability.
  2. The flowcell glass thickness is surprising and might impact the imaging process, requiring specific optics designed for it.
  3. The material of the channel spacer in the flowcell is unknown, leading to curiosity about its composition and potential patent research.

Superb Halos

GOOD INTERNET • 13 implied HN points • 17 Jan 24
🔬 Science Optics Meteorology Physics Geography History
  1. Atmospheric ice crystal optics can create superb halos that are visually stunning and fascinating.
  2. Halos are optical phenomena caused by ice crystals in the atmosphere, with different types like the 22° Halo.
  3. Kenneth Libbrecht, known as the "pope of snow crystals," released a monograph explaining the formation of ice crystals and snowflakes.
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