How We See



        We use our eyes everyday, you’re even using them right now to read these words. But have you ever questioned how the hell can these little balls on my face see everything? Well your eye is made of two main parts that are able to react with light and create the sensation we call vision: rods and cones. Rods are kinda terrible with understanding color so they just lock in when it’s dark and try to understand the brightness of light. Rods can even work in super dim light. Cones on the other hand, loveeee color. Cones are able to use structures called pigments to understand a humongous range of colors, but they can only work when it’s bright. Humans are lowkey blessed that they have both rods and cones, since some animals only got 1 of the 2. For example pigeons only have cones, because of this pigeons are good at seeing in bright light, but they’re legit clueless in the dark. Owls, on the other hand, only have rods. Therefore, they have insane night vision, but are colorblind.
The part of rods that actually react with the light is called rhodopsin (in the pic above). In 1952, Nobel Prize winner George Wald (Harvard University) and his coworkers showed that the molecule inside rhodopsin, responsible for its power to absorb and send light info to the brain, is the conjugated polyunsaturated system of the 11-cis-retinal (yeah I know its name is disgustingly long and sounds so geeky). Additionally, rhodopsin itself is made by a reaction between 11-cis-retinal and a protein named opsin. The 11-cis-retinal is able to fit just like a puzzle piece into the opsin and makes it possible to absorb a wide variety of light (all the colors of the rainbow). After light is absorbed, the rhodopsin partners up with these cells called neurons and basically notifies your brain "yo we just saw some colors" and you're brain is like "ok" and then gives you the power to see.





Comments

  1. Aarush I really liked how you were able to change the colors in your font text to create your own voice and style. It makes the text really interesting as well as the other slang language you used like geeky and legit clueless.

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  2. I agree with Eric's comment. The tone and the style you wrote in was really unique. I could "legit" hear your voice speak these words and that's what made it so engaging. You managed to simply such a complex topic to make it seem like the easiest topic in the world. I also like your hook in the beginning that was completely outside the provided text.

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  3. I had no idea how the eyes worked and this blog really helped me get an overview. Your voice was also really engaging and funny especially when you described the functions of rods and cones.

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  4. Aarush, I like all the artistic touches that you added to your blog. Your use of common slang and changes in color made this blog very engaging for such a dull topic.

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