Brain Teasers User Profile

Sandra Navi Young

See full ranking list
short ranking list
146. Donya Sayah 31
147. Donald Bradley 31
148. Sandra Navi Young 31
149. fuad suliman 31
150. jim white 31
last 3 solved tasks
What represents the following text 7641PI?
Find the country and its capital city, using the move of a chess knight. First letter is C. Length of words in solution: 7,7,4.
Who is the mysterious person in the picture?

Konstantin Eduardovich Tsiolkovsky

Died 19 Sep 1935 at age 78 (born 17 Sep 1857). Russian pioneer space theorist who, while a provincial Russian schoolteacher, worked out many of the principles of space travel. In 1883, he noted that a vehicle in space would travel in the opposite direction to gas that it emitted, and was the first to seriously propose this method propulsion in space travel. He wrote various papers, including the 1903 article “Exploration of Space with Reactive Devices.” The engineering equations he derived included parameters such as specific impulse, thrust coefficient and area ratio. He established that the most efficient chemical combination would be that of liquid hydrogen and liquid oxygen. He was later recognized by the Soviet Union as the “father of cosmonautics.” He also built the first wind tunnel.«


Follow Brain Teasers on social networks