, 18 2010 . 06:52
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18 1048 /Omar KHAYYAM/(1048 ≈ 4.12.1131), , . (), ≈ - -- , . ( ), . 1859 " " . , - - ≈ . , ( ), ≈ . . , , ≈ . -, , . 5 , 12: 6 ≈ 6 ≈ . - , , , , .
1186 (1186 ≈ 2.2.1219), 1216≈19, . , . .
1850 160 /Oliver HEAVISIDE/(1850 ≈ 3.2.1925), , ≈ , . , , : 20- , - . . 1891 ≈ .
1868 II (1868 ≈ 17.7.1918), . , . . , , , . ( ), , , , . , . , .
: