BRAIN TEASERS
Brain Teasers User Profile

Valentina Vereš

rank
263
points
8
See full ranking list
short ranking list
261. Sneška Se Smeška 8
262. Jasmina Popovic 8
263. Valentina Vereš 8
264. Mario Del Rosario 8
265. Adrian Rodriguez 8
last 3 solved tasks
He has married many women, but has never been married. Who is he?
Find 1 of 7 Words Hidden in the Picture.
Find 1 of 6 Words Hidden in the Picture.

Carl Gassner

Born 17 Nov 1855; died 31 Jan 1942 at age 86.German physician and inventor who was an eyes and ears specialist, but is best known for inventing the first dry cell battery (1886). It used the same principle as the Leclanché cell. A carbon manganese rod was the anode. Instead of a liquid electrolyte, he devised a porous paste form with sal ammoniac, plaster, zinc chloride and water. All were sealed in a a zinc can that also was the cathode. Lechanché cells had been used for electric door bells, but those were vulnerable to breakage and spillage, as well as needing fresh water added periodically. To help a store-keeper, Gessner devised his dry cell as an better alternative.He obtained a German patent (8 Apr 1886), a British provisional patent (No. 18,754 on 22 Dec 1888), and a U.S. patent (No. 373,064 on 15 Nov 1887) as well as patents in Austria-Hungary, Belgium and France.«

April Fool's Day Prank - Stuff doughnuts...

Stuff doughnuts with mayonnaise.
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.