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Allvar GullstrandDied 21 Jul 1930 at age 68 (born 5 Jun 1862).Swedish ophthalmologist, recipient of the 1911 Nobel Prize for Physiology or Medicine for his research on the eye as a light-refracting apparatus. Hermann von Helmholtz had earlier shown that the eye solves the problem of accommodation (how to focus on both near and distant objects) by changing the surface curvature of the lens - the nearer the object, the more convex the lens becomes; the further the object, the more concave the lens. Gullstrand showed that this could in fact account for only two thirds of the accommodation a normal eye could achieve. The remaining third was produced by what Gullstrand termed the “intracapsular mechanism”and depended on the fact that the eye was not a homogeneous medium.[DSB gives date of death 21 Jul 1930. EB gives 28 Jul 1930.]
While the bar patron savored a...
"I'm celebrating, too," she replied, clinking glasses with him.
"What are you celebrating?" he asked.
"For years I've been trying to have a child," she answered, "Today my gynecologist told me I'm pregnant!"
"Congratulations," the man said, lifting his glass. "As it happens, I'm a chicken farmer, and for years all my hens were infertile. But today they're finally fertile."
"How did it happen?"
"I switched cocks."
"What a coincidence," she said, smiling.