Ib lub hydrometer yog ib qho cuab yeej siv los txiav txim siab qhov tseeb . Nws ua haujlwm raws li lub hauv paus ntsiab lus Archimedes Archimedes lub hauv paus ntsiab lus Archimedes lub hauv paus ntsiab lus hais tiaslub zog nce siab uas tau tawm ntawm lub cev rau hauv cov kua dej, txawm tias tag nrho lossis ib nrab, yog sib npaug ntawm qhov hnyav ntawm cov kua dej uas lub cev txav mus. Archimedes 'txoj cai yog txoj cai ntawm physics qhov tseem ceeb rau cov tshuab ua kua dej. Nws tau tsim los ntawm Archimedes ntawm Syracuse. https://en.wikipedia.org › wiki › Archimedes'_principle
Archimedes 'txoj cai - Wikipedia
uas lub cev muaj zog txav nws qhov hnyav hauv cov kua uas nws ntab. Hydrometers tuaj yeem muab faib ua ob chav dav dav: cov kua hnyav dua dej thiab cov kua dej sib dua li dej.
Kev nyeem hydrometer txhais li cas?
Nkag siab qhov ntsuas.
qhov ntsuas ntau tshaj plaws ntawm hydrometers yog "kev nqus tshwj xeeb." Qhov no yog qhov piv ntawm cov kua qhov ntom ntom rau qhov ntom ntom ntawm cov dej. Cov dej ntshiab yuav tsum tau nyeem 1.000. Kev nyeem ntawv siab dua txhais tau tias cov kua yog denser (hnyav) dua li dej, thiab kev nyeem qis dua txhais tau tias nws sib dua.
Yuav ua li cas cov khoom ua kua dej ntsuas qhov ntsuas dej?
A hydrometer yog ib qho cuab yeej siv los ntsuas qhov tshwj xeeb lub ntiajteb txawj nqus (los yog txheeb ze qhov ntom ntom) ntawm cov kua; uas yog, qhov piv ntawm qhov ntom ntawm cov kua rau qhov ntom ntawm cov dej. Lub hydrometer feem ntau yog ua los ntawm iav thiab muaj ibcylindrical qia thiab lub teeb hnyav nrog mercury lossis txhuas txhaj tshuaj kom nws ntab upright.
Dab tsi yog hom hydrometers?
Nco ntsoov tias peb hom hydrometers muaj nyob hauv khw yog triple scale hydrometer, thermohydrometers, thiab precision hydrometers.
Hydrometers siv nyob qhov twg?
A hydrometer ntsuas qhov ntom ntawm cov kua. Ib qho hnyav zaum hauv qab, thiab ib qho nplai ntawm qhov nqaim saum kawg. Hydrometers yog used hauv marine fish-keeping, wine-making, and the milk industry. Muaj ntau qhov sib txawv nyob ntawm kev siv hydrometer.
