Why is Ibn Sahl left out of history? The Muslim genius who pioneered Snell's Law long before it was recognized.
Ibn Sahl (d. 1000), was a Muslim mathematician and physicist, who flourished in Baghdad. He was the first to discover the law of refraction (Snell's law).
Ibn Sahl uses this law to derive lens shapes that focus light with no geometric aberrations, known as anaclastic lenses.
Ibn Sahl is the first Muslim scholar known to have studied Ptolemy's Optics. Ibn Sahl dealt with parabolic mirrors, ellipsoidal mirrors, biconvex lenses, and techniques for drawing hyperbolic arcs.
I have been in crypto from last four years and In all these years, I’ve seen hundreds of coins crash. Most of them never recovered.... Once a coin loses its structure, liquidity, and real interest, it usually stays dead no matter how much people hope. Coins like $BIFI top $7000+, $MYX $18 $POWER to $2.57 and many others are perfect examples. They fell hard, tried small bounces, and then slowly faded. No real comeback. Just lower highs, lower volume, and silence. The painful truth is this: Not every dip is a buying opportunity. Some dips are simply the market telling you the story is over. What worries me most is that some creators keep pushing these dead coins, telling newbies “this is the bottom” or “100x loading,” while they already exited long ago. That’s how traps are created not with charts, but with false hope. Recovery only happens when a coin still has strong demand, volume, narrative, and real buyers stepping in. Without that, price might bounce but it won’t return to the top. I’m not saying never buy dips. I’m saying buy with logic, not emotion. Protect your capital first. Opportunities come every cycle but traps come every day. hit like button and drop ♥️ if you agree with me....
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