... Some equations, identities or formulas contain small quantities , and these can be made much simpler and easier to use by sacrificing a little accuracy. ... When we derive squares, 3rd powers, 4th powers etc. of numbers larger than 1 , the results are always bigger , while for numbers smaller than 1 , the results are always smaller . ... power . ... number . ... The above also holds for negative numbers, if one understands "bigger" and "smaller" to refer to the absolute value (the value without sign...

... Горизонты науки о Вселенной (Модераторы: Дмитрий Вибе , AlAn ) ? Давайте приколем инопланетян! :) . ... Рейтинг: +0/-0 . ... 19.05.2005 [11:05:30] ? ... Инопланетяне видят огонек, бегающий по . ... Записан . ... Ответ #1 : 19.05.2005 [13:27:11] ? ... А импульсные источники, которые дают импульс 1 мс -- не проблема, можно сделать и 1 нс. ... Цитата: Павел Фоменко от 19.05.2005 [11:05:30] Длина земного экватора L = 40 тысяч километров. ... Хорош прикол для инопланетян (которых поблизости Земли нет). ...

Initial orbit determinations of NEO-2005 with Pulkovo AMP-method O.P. Bykov Central Astronomical Observatory of RAS, Russia, 196140, Saint-Petersburg, Pulkovskoye shosse 65/1 Abstract Pulkovo Apparent Motion Parameters Method (the AMP-method) was proposed by prof. A.A.Kiselev and developed by his colleagues for initial orbit determinations of Artificial Earth Satellites, Space Debris, Asteroids, and Comets on the base of very short observational arc. ... Table 4 Apparent Motion Parameters for 2005 EE. ...

Hide Zen home . ... Index . ... q3c_ang2ipix x2013; converts spatial coordinates (ra,dec) to the ipix value . ... Suppose, you have table with spatial coordinates - ra and dec columns. ... To perform the query around ra0=2 and dec0=3 with radius0=1 from the table mytable you can do: # select * from mytable where q3c_radial_query(ra, dec, 2, 3, 1); . ... Assuming that we have a huge table "table2" with created ipix index and with ra and dec columns and the smaller one "table1" with ra and dec columns. ...

... The locations of the different orders relative to exposures taken through a direct imaging filter are determined, trace and wavelength solutions are derived for a central position on each chip, and the absolute throughput of the different orders is quantified. ... 13 ST-ECF Instrument Science Report WFC3-2009-01 Figure 7: Instrument efficiency of the first few orders for the WFC3/UVIS G280 grism on Chip 2 as a function of wavelength. ... The average dispersion in the +/-1st orders is ~14 е/pixel. ...

... Average effective wavelengths and band widths for various sp ectra Lyrae spectrum f flat k е 1014 Hz 5386 ± 18 4.66 ± 0.04 5714 ± 12 4.1 6234.5 ± 0.5 1.03 5372 ± 18 4.69 ± 0.04 eff 2 Optical Filter ID 1 2 3 4 a Fo c -6 10 erg/cm2 s 12.55 ± 0.10 11.04 ± 0.01 2.77 ± 0.004 12.63 ± 0.10 fo d 6 10 photons/cm2 s 3.40 ± 0.02 3.18 ± 0.004 0.87 ± 0.002 3.42 ± 0.02 Power-law eff f 2 е 5746 ± 317 6197 ± 253 6305 ± 31 5736 ± 316 spectra pl k 1014 Hz 3.70 ± 0.26 3.14 ± 0.16 0.88 ± 0.01 3.70 ± 0.27 Table 1. ...