Hourglass

Hourglass - kuyambitsa kuti anasintha maganizo a munthu pa nthawi. History sapereka yankho lomveka bwino za mmene Komabe, zikhoza kapadera kuti chipangizo oterowo wakhala wodziwika mu wakale Asia BC.

Ndi njira yosavuta koma kwambiri mafoni akayezetsa nthawi - iwo mofulumira yafalikira Zapakati ndi kukhala Kuwonjezera kwambiri otchuka pa nthawi imeneyo, sundial.

Hourglass analola kuyeza nthawi madzulo ndipo anali zambiri zolondola wotchiyi inkagwira. A malo apadera kulamulidwa ndi maso pa zombo kuyambira pitching osati anagwira ngati Yathandiza kwambiri kutsanulira mchenga, mosiyana koloko madzi. Makamaka mwa iwo chombo liwiro anatsimikiza - anali mwazisiya mu madzi chingwe ndi mfundo ndi pa 30 wachiwiri nthawi wotchi anali anayeza. Pa nthawi yomweyo inverting wotchi oyendetsa adatchithisira chingwe mu madzi akuyamba kuwerenga, kawirikawiri kwa kukhudza, "mfundo" - choncho panali liwiro mu mfundo. Komanso, zombo ntchito ola anayi hourglass, kuwagwiritsa ntchito kudziwa nthawi derzhurstva penyani gulu limodzi.

The drawback waukulu ngati hourglass muyezo waung'ono analipo kuyeza nthawi imeneyi. Kotero, anali ulonda wotchuka kwambiri, kuyeza ola limodzi kapena awiri, nthawi zina maola atatu. Pa kupanga amagwiritsidwanso koloko ndi metered maola asanu ndi atatu kapena khumi - nthawi ya tsiku logwira ntchito.

Yolondola amenewa wotchi zimatengera makamaka khalidwe la mchenga. Amagwiritsidwa ntchito mchenga yemweyo amene anali kupanga galasi - annealed, zabwino ndi anasefa kupyolera sieve chabwino. M'malo mchenga akhoza kugwiritsidwa ntchito zipolopolo finely grated chipolopolo kapena nsangalabwi n'chochepa. Komanso hourglass molondola zimadalira khalidwe pamwamba pa galasi ntchito Komabe ndi kupita kwa nthawi, ndi kumva kuwawa mchenga galasi mkati pamwamba, yolondola amenewa wotchi kugwa.

Mu 18 - zaka 19, ndi zikamera wa mafakitale ndi mafakitale, chifukwa kupanga mtengo, chimagwiritsidwa ntchito kwambiri, kamodzi mtengo ndi bulky ulonda makina ndi mawotchi ama alamu. Chifukwa cha - hourglass ndi atulutsidwa ntchito wamba, ngakhale kuti ngakhale lero iwo ankagwiritsa ntchito makampani, mankhwala ndi zina zambiri.