Qhov ntsuas ntsuas qhov deb yog dab tsi?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Astronomers siv metric units, thiab tshwj xeeb tshaj yog cov cgs (centimeter-gram-thib ob). Lub hauv paus ntawm kev ncua deb yog qhov ib cm (cm ). Muaj 100 centimeters hauv ib meter thiab 1000 meters hauv ib kilometer.

Hauv qhov no, tus qauv ntsuas qhov deb yog dab tsi?

Raws li International System ntawm units , cov standard unit ntawm kev ncua deb Nyob rau hauv lub metric system yog lub ' meter '. Lub ' meter ' yog sib npaug rau qhov ntev ntawm txoj kev hla lub teeb nyob rau hauv lub tshuab nqus tsev vacuum 1/299792458 ntawm ib thib ob.

Qhov thib ob, dab tsi metric unit yog siv los ntsuas qhov ntev ntawm txoj kev loj? yuav ntsuas hauv meters . Kilometers yog siv los ntsuas qhov ntev. Yog tias koj tab tom nrhiav kom paub qhov ntev ntawm txoj kev, qhov deb ntawm ob qhov chaw, thiab lwm yam, koj yuav siv kilometers.

Nyob rau hauv no txoj kev, dab tsi yog cov metric units nyob rau hauv kev txiav txim los ntawm tsawg tshaj plaws mus rau loj?

Cov hli (mm) yog qhov ntsuas me me ntawm qhov ntev thiab sib npaug 1/1000 ntawm a meter . Cov cm siab ( cm ) yog chav tsev loj tshaj plaws ntawm qhov ntev thiab sib npaug 1/100 ntawm a meter . Cov decimeter (dm) yog qhov loj tshaj plaws ntawm qhov ntev thiab sib npaug 1/10 ntawm a meter.

Dab tsi yog chav tsev ntawm kev xaav?

Kev khiav tawm (symbolized d los yog s), kuj hu ua ntev los yog nyob deb, yog ib-dimensional kom muaj nuj nqis sawv cev ntawm kev sib cais ntawm ob lub ntsiab lus. Tus qauv unit ntawm kev khiav tawm hauv International System ntawm Chav tsev (SI) yog qhov ntsuas (m). Kev khiav tawm feem ntau yog ntsuas los yog txhais raws txoj kab ncaj nraim.