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Sherly Clement

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284. Shehzad Raza 8
285. Srijegan Arulrajah 8
286. Sherly Clement 8
287. Hossein Saatian 7
288. Samkarran Persad 7
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?
MATH PUZZLE: Can you replace the question mark with a number?

Radioactivity

In 1896, Henri Becquerel read a report to the French Academy of Sciences of his investigation of the phosphorescent rays of some “double sulfate of uranium and potassium” crystals. He reported that he placed the crystals on the outside of a photographic plate wrapped in sheets of very thick black paper and exposed the whole to the sun for several hours. When he developed the photographic plate, he saw a black silhouette of the substance exposed on the negative. When he placed a coin or metal screen between the uranium crystals and the wrapped plate, he saw images of those objects on the negative. He did not yet know yet that the sun is not necessary to initiate the rays, nor did he yet realise that he had accidentally discovered radioactivity. He would learn more from a further accidental discovery on 26 Feb 1896.

A woman went to a computer dat...

A woman went to a computer dating service and said she didn't care about looks, income or background. All she wanted was a man of upright character.
Then a man came in and told them the only thing he was seeking in a woman was intelligence.
The service matched them together at once because they had one thing in common - they were both compulsive liars.
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