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thefaxhasgreatlychangedofficework,especiallyinchina.whenyouplaceasheetofpaperinafaxmachine,themachine"reads"thewritingonthepageandchangestheshapesoflettersintoelectronicsignals.itthensendsthesesignalsdownanordinarytelephonelioanotherfaxmachine,whichchangesthesignalshackintotheshapesofletters.
youcanimaginehowusfulthisis,particularlyincountrieslikechinaandjapan,whichusewrittencharactersnotletters.itisalsousefulforsendingpictures,designs,mapsandsoon.
sendingafaxinmoreexpensivethanpostingaletter,butmuchquicker.forexample,youcansendinformationabroadimmediately,butmailingalettermighttakeaweekorso.ifyouwanttosendalettertoanofficeabroadthatisinadifferenttimeone,youcansendafax,anditwillbereceivedeventhoughtheofficeisnotopen.
therearetwootherpointstoconsider.first,rememberthatafaxcanbereadbyanyone,sobecarefulwhatyousend!second,donotstartfaxingeverything!itismuchcheapertopostoremailalongreportthantofaxit.