MyCity » Nauka -> Astronomija » SETI-ju smetaju mobilni iz aviona

SETI-ju smetaju mobilni iz aviona

Napisano na dan: 9.6.2005

SETI-ju smetaju mobilni iz aviona
Sledeća strana Pagination

Idi na vrh

Poslao: 09 Jun 2005 21:32
Idi na vrh
offline
  • Pridružio: 10 Feb 2005
  • Poruke: 3549

Iphtashu Fitz writes "If, as recently mentioned, the FCC does allow wireless access on airplanes, could it effectively mean the end of the search for ET? NewScientist has a new article that explains how radio interference from airborne cellphones could drown out faint radio signals from space. Among other concerns astronomers have is that the second harmonic of many cell phones falls in a frequency band that reveals the molecular signature of newborn and dying stars, which is among the 2% of frequencies in this part of the electromagnetic spectrum reserved for use by radio astronomers. Michael Davis, director of projects at California's SETI Institute, stated that a single cellphone on an airplane 100 miles from a radiotelescope could exceed recommended radio noise levels by 10 times. A potential solution that astronomers have suggested is to install a miniture cell transceiver on each airplane, called a picocell, that would act as a relay using a frequency that wouldn't interfere with their work."

[Link mogu videti samo ulogovani korisnici]



Registruj se da bi učestvovao u diskusiji. Registrovanim korisnicima se NE prikazuju reklame unutar poruka.

MyCity » Nauka -> Astronomija » SETI-ju smetaju mobilni iz aviona

Ko je trenutno na forumu
 

Ukupno su 4807 korisnika na forumu :: 105 registrovanih, 9 sakrivenih i 4693 gosta   ::   [ Administrator ] [ Supermoderator ] [ Moderator ] :: Detaljnije

Najviše korisnika na forumu ikad bilo je 20624 - dana 04 Apr 2026 04:18

Korisnici koji su trenutno na forumu:
Korisnici trenutno na forumu: amstel2, bavar357, BB, BlackTower, BlekMen, bpop, bunker, BZ, CCCP, celt, cenejac111, CHARLIE JA., Cicumile, Clouseau, coaaco, CraniumWhite, CrazyDiablo, CrveniSolaris, cvrle312, Dannyboy, dekiz, dhrustanovic, Dimitrise93, djile1, Djokkinen, DonRumataEstorski, Dorijan Grej, draganl, DragoslavS, dushan, Ercomero, EVIDENTICAR, g_g, Georgius, GUARIN, Holy Saber, howyesno, HrcAk47, istina, ivan979, Ivoo, Jaxupa, JK, Kajzer Soze, Kanader, kaput21, king111, Konda, Krajišnik97, laurusri, littlebunny, luja, luka35, maksi007, Marko Marković, mikrimaus, MiloradKomadic, mladen.zovko, Mrav Obrad, MrG, Muki 123, N.e.m.a.nj.a., Ne doznajem se u oružje, nenad81, Ns1975, operniki, orfanel, Paklenica, Panter, Parker, pein, Permaldar, ping15, pirke96, Prometeus, pzoca, Radoslava, raptorsi, read-only, Regrut Boskica, rovac, royst33, S-G, saputnik plavetnila, Semberija, shiro, singa, Sir Budimir, spalev, Srky Boy, stalja, Tandrkalo, tmanda323, Tumansky, umpah-pah, vaci, Velički, Vladko, Voice1, x011, XBMC, yrraf, zemljanin, zixmix, 800077