#WonderingWednesdays: Have you ever noticed how cool it is that you can see things up close by peering through your eyelashes? 👁️✨ I mean, seriously, how does that even work? 🤔 Let me paint you a picture: you’re trying to read some tiny text on a piece of paper, and your eyes just can’t seem to focus properly. But wait, by lowering your lids and peeking through your lashes, suddenly everything is crystal clear! 🤯
So, here’s the deal: when you peer through your eyelashes, you are essentially creating a makeshift barrier that manipulates the light entering your eyes. This trick helps to reduce the amount of light hitting your pupils, making it easier for your eyes to focus on objects up close. It’s like your eyelashes are little vision wizards saving the day! 🧙♂️✨
But hey, that’s just my two cents on the matter! What do you think? Have you ever experienced this visual magic yourself? 🌟 Let’s dive in and uncover the mysteries together! 💬💡 #EyelashEnigmas 🕵️♀️🔍
Any lens has a property called “depth of field”. This is the range of the field of view which is in focus. This property is a function of two parameters, the curvature of the lens, and the diameter of the lens. The more the curvature the smaller the depth of field and the smaller the diameter the larger the depth of field. It seems a little surprising, but with a small enough diameter any lens can have focus from near to infinity. This is how the “pinhole camera” works. When you squint, or look through your eyelashes, or look through a pinhole, you are changing the lens diameter from the normal size (the pupil) to something smaller. This makes dark things harder to see, but it increases the depth of field if there is enough light.