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Calculate the number 1244

NUMBERMANIA: Calculate the number 1244 using numbers [5, 5, 1, 6, 91, 693] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 3

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My mother says she never holds...

My mother says she never holds grudges but then will blindside you with something that happened years ago.
Last week she said, "You know, you really hurt me on your birthday."
And I was like, "Which birthday was that?"
So she replied, "The first one. You have a really big head, you know."

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Pyotr Nikolayevich Lebedev

Died 1 Apr 1912 at age 46 (born 8 Mar 1866).Russian physicist who, in experiments with William Crookes' radiometer, proved (1910) that light exerts a minute pressure on bodies (as predicted by James Clerk Maxwell's theory of electromagnetism), and furthermore that this effect is twice as great for reflecting surfaces than for absorbent surfaces. He had proposed that light pressure on small particles of cosmic dust could be greater than gravitational attraction, thus explaining why a comet's tail points away from the Sun (though it is now understood the solar wind has a greater influence). He built an extremely small vibrator source capable of generating 4-6 mm waves, which he used to demonstrate the first observation of douible refraction of electromagnetic waves in crystals of rhombic sulphur.«[DSB gives dates 8 Mar 1866 - 1 Apr 1912. EB gives Old Style 24 Feb 1866 - 1 Mar 1912 (New Style 8 Mar 1866 - 14 Mar 1912).]

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