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  2. Cantor–Zassenhaus algorithm - Wikipedia

    en.wikipedia.org/wiki/Cantor–Zassenhaus_algorithm

    The Cantor–Zassenhaus algorithm takes as input a square-free polynomial (i.e. one with no repeated factors) of degree n with coefficients in a finite field whose irreducible polynomial factors are all of equal degree (algorithms exist for efficiently factoring arbitrary polynomials into a product of polynomials satisfying these conditions, for instance, () / ((), ′ ()) is a squarefree ...

  3. Harvard Extension School - Wikipedia

    en.wikipedia.org/wiki/Harvard_Extension_School

    Of the students enrolled in 2000, 75% had a bachelor's degree and 20% had a graduate degree. More than 1,700 were Harvard employees using the Tuition Assistance Program, and an estimated 10–15% were exclusively online students. Of the 255 Certificate of Special Studies graduates that year, 163 were international students hailing from 39 ...

  4. Rutherford scattering experiments - Wikipedia

    en.wikipedia.org/wiki/Rutherford_scattering...

    Rutherford scattering cross-section is strongly peaked around zero degrees, and yet has nonzero values out to 180 degrees. This formula predicted the results that Geiger measured in the coming year. The scattering probability into small angles greatly exceeds the probability in to larger angles, reflecting the tiny nucleus surrounded by empty ...

  5. Hans Thewissen - Wikipedia

    en.wikipedia.org/wiki/Hans_Thewissen

    Johannes Gerardus Marie (Hans) Thewissen is a Dutch-American paleontologist known for his significant contributions to the field of whale evolution.Thewissen's fieldwork has led to the discovery of key fossils that have shed light on the transition of whales from land to water, including the discovery of Ambulocetus, Pakicetus, Indohyus, and Kutchicetus.

  6. Pressure angle - Wikipedia

    en.wikipedia.org/wiki/Pressure_angle

    Standard values are 14.5 and 20 degrees. [2] Earlier gears with pressure angle 14.5 were commonly used because the cosine is larger for a smaller angle, providing more power transmission and less pressure on the bearing; however, teeth with smaller pressure angles are weaker. To run gears together properly their pressure angles must be matched. [3]

  7. Conversion of scales of temperature - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_scales_of...

    This is a collection of temperature conversion formulas and comparisons among eight different temperature scales, several of which have long been obsolete.. Temperatures on scales that either do not share a numeric zero or are nonlinearly related cannot correctly be mathematically equated (related using the symbol =), and thus temperatures on different scales are more correctly described as ...

  8. Spin echo - Wikipedia

    en.wikipedia.org/wiki/Spin_echo

    A 180 degree pulse is now applied so that the slower spins lead ahead of the main moment and the fast ones trail behind. Progressively, the fast moments catch up with the main moment and the slow moments drift back toward the main moment. At some moment between E and F the sampling of the echo starts.

  9. Thread angle - Wikipedia

    en.wikipedia.org/wiki/Thread_angle

    30° [5] DIN 405 / DIN 20400 Acme thread [6] 29° ASME/ANSI B1.5-1988 [7] Metric trapezoidal threads [1] Tr 30° DIN 103 Buttress threads [6] S 45° DIN 2781 German buttress threads [6] S 30° DIN 513 Square threads [1] Sq 0° (parallel) ? Panzergewinde, "steel conduit thread" Pg 80° DIN 40430 British Association (BA) thread: BA 47° 30' = 47. ...