BRAIN TEASERS
Brain Teasers User Profile

Navodit Gupta

rank
51
points
224
See full ranking list
short ranking list
49. Meryl de la Rey 267
50. Marjan Kelemen 257
51. Navodit Gupta 224
52. Irena Katic Kuzmanovic 218
53. Kishan Sharma 217
last 3 solved tasks
Remove 5 letters from this sequence (CKHAIARMXFUL) to reveal a familiar English word.
What gets smaller when ideas grow?
MATH PUZZLE: Can you replace the question mark with a number?

Allvar Gullstrand

Died 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.]

Monday Motivation

Believe that you can and you're halfway there.
Jokes of the day - Daily updated jokes. New jokes every day.
Follow Brain Teasers on social networks
This site uses cookies to store information on your computer. Some are essential to help the site properly. Others give us insight into how the site is used and help us to optimize the user experience. See our privacy policy.