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Athens News Agency: News in Greek, 09-07-27

Athens News Agency: News in ASCII Greek Directory - Previous Article - Next Article

From: The Athens News Agency at <http://www.ana.gr/>

PERIEXOMENA
  • [01] Ta mystika ths stagonas ths broxhs

    [01] Ta mystika ths stagonas ths broxhs

    H poikilia megeqoys kai sxhmatwn poy exoyn oi stagones ths broxhs anekaqen apoteloyse ena mysthrio gia toys fysikoys. Twra, gia prwth fora, Galloi ereynhtes, binteoskopwntas me kameres ychlhs taxythtas (lhch 1.000 eikonwn ana deyterolepto) mia stagona thn wra poy epefte, kataferan na "jekleidwsoyn" ta mystika ths kai na ejhghsoyn giati paragetai olh ayth h poikilomorfia - poy piqanotata den syneidhtopoioyme, kaqws trexoyme na profylaxtoyme thn wra ths broxhs!

    To 1904, gia prwth fora, oi fysikoi anakalycan oti oi stagones exoyn polla diaforetika sxhmata. Mexri twra oi episthmones pisteyan -kai oi maqhtes didaskontan sta sxoleia- oti kaqws peftoyn apo ta synnefa pros th gh, oi stagones sygkroyontai metajy toys kai me ton tropo ayto dhmioyrgoyntai stagones kaqe eidoys sxhmatos kai megeqoys. Omws oi Galloi episthmones, kinhmatografwntas kai meletwntas thn ptwsh mias memonwmenhs stagonas diametroy peripoy eji xiliostwn, diapistwsan oti kati allo symbainei sthn pragmatikothta.

    Opws eipan, antiqeta me thn epikratoysa antilhch, spania oi stagones sygkroyontai metajy toys otan peftoyn. Ayto mporei na symbainei arxika mesa sta synnefa, alla oxi otan pia arxisei na brexei. To piqanotero einai oti oi stagones ths broxhs qa ftasoyn sto edafos, xwris na exoyn erqei kan se epafh me alles stagones.

    Ayto poy symbainei einai oti, kaqws mia stagona peftei, h antistash toy aera poy synanta, thn anagkazei na paramorfwqei (ej oy kai ta diaforetika sxhmata) kai telika na diaspastei se epimeroys mikrotera kommatia. Synhqws mia megalh sfairikh stagona baqmiaia ginetai olo kai pio peplatysmenh kai lepth, wspoy spaei se mikroteres stagones, mia diadikasia poy lambanei xwra en riph ofqalmoy, mesa se molis eji ekatosta toy deyteroleptoy. Ayto ejhgei giati spania sto edafos fqanoyn pragmatika megales stagones.

    H anakalych, poy egine apo omada ereynhtwn me epikefalhs ton fysiko Emanoyel Bilermo toy panepisthmioy ths Massalias, dhmosieythke sto periodiko fysikhs "Nature Physics", symfwna me to Galliko Praktoreio kai to BBC.

    Alloi episthmones, opws o dr Entoyan O'Konor apo to bretaniko panepisthmio toy Rintingk, o opoios eidikeyetai sthn meleth twn synnefwn, sxoliase oti h gallikh meleth, an kai diafwtistikh, perigrafei kati poy symbainei kyriws otan brexei dynata opote oi stagones einai xontres kai baries, alla oxi otan yparxei cilobroxo, opote oi stagones einai elafries kai mikres.

    Syndesmos gia thn prwtotyph episthmonikh ergasia sth dieyqynsh: http://www.nature.com/nphys/journal/vaop/ncurrent/abs/nphys1340.html


    Athens News Agency: News in ASCII Greek Directory - Previous Article - Next Article
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