How many squares can you cou...
How many squares can you count in the given picture?Correct answers: 115
The first user who solved this task is Neelima Subrahmanyam.
#brainteasers #math #riddles
Charles Thomas JacksonBorn 21 Jun 1805; died 28 Aug 1880 at age 75. American physician, chemist, and pioneer geologist and mineralogist. Jackson's professional career consisted of a series of spectacular claims to the work of others which continued until he finally became insane in 1873. In 1832, during a voyage, he discussed with the portrait painter Samuel Morse the possibilities of electric telegraphy. Morse exhibited his telegraph to Congress in 1837 but had to spend seven years to establish a right to his own invention against Jackson's claim that Morse had stolen it from him. Jackson similarly claimed priority in the idea of use of ether as an anaesthetic, which he had suggested to a dentist, William Morton. Though the effects of ether were somewhat known at the time, it was Morton who made the idea practical. |