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Leticia Okata

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568. Japa do CS 1
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If 1+4=5, 2+5=12 and 3+6=21 then 5+8=?

Camera obscura

In 1544, a solar eclipse was viewed at Louvain, which was later depicted in the first published book illustration of the camera obscura in use. Dutch mathematician and astronomer Reinerus Gemma-Frisius viewed a solar eclipse using a hole in one wall of a pavillion to project the sun's image upside down onto the opposite wall. He published the first illustrationof a camera obscura, depicting his method of observation of the eclipse in De Radio Astronomica et Geometrica (1545). Several astronomers made use of such a device in the early part of the 16th century. Both Johannes Kepler and Christopher Scheiner used a camera obscura to study the activity of sunspots. The technique was known to Aristotle (Problems, ca 330 BC).

Six guys were playing poker wh...

Six guys were playing poker when Smith loses $500 on a single hand, clutches his chest and drops dead at the table. Showing respect for their fallen comrade, the other five complete their playing time standing up. Roberts looks around and asks, "Now, who is going to tell the wife?" They draw straws. Rippington, who is always a loser, picks the short one. They tell him to be discreet, be gentle, don't make a bad situation any worse than it is. "Gentlemen! Discreet? I'm the most discreet man you will ever meet. Discretion is my middle name, leave it to me." Rippington walks over to the Smith house, knocks on the door, the wife answers, and asks what he wants. Rippington says, "Your husband just lost $500 playing cards." She hollers, "TELL HIM TO DROP DEAD!" Rippington says, "I'll tell him.
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