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Pratima Singh

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59. Kishan Sharma 217
60. Anas Diab 215
61. Pratima Singh 215
62. Luděk Štrobl 204
63. James Lillard 202
last 3 solved tasks
MATH PUZZLE: Can you replace the question mark with a number?
MATH PUZZLE: Can you replace the question mark with a number?
I am a potato's favorite tool and I give him a lot of power. You can sit with me all day but when my energies drain my partner would only respond to your touch. What am I?

Sir Charles Vernon Boys

Died 30 Mar 1944 at age 89 (born 15 Mar 1855).English physicist and inventor of sensitive instruments. His studies included in mining, metallurgy, chemistry and physics. He was also self-taught in a wide knowledge of geometrical methods. In 1881, he invented the integraph, a machine for drawing the antiderivative of a function. Boys is known particularly for his definitive book (1890) on the physics soap bubbles. He employed the torsion of quartz fibres to measure minute forces, repeating (1895) Henry Cavendish's experiment, to improve the measurement of the Newtonian gravitational constant. He also invented an improved automatic recording calorimeter for testing city coal gas (1905) and high-speed cameras to photograph rapidly moving objects, such as bullets and lightning discharges. He was knighted in 1935. Upon retirement in 1939, he grew and studied garden weeds.«

Wish Comes True

Carlos told his wife he wanted a guitar to play while sitting in the Jacuzzi. “The next day she bought him an electric guitar.”
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