Qhov txawv ntawm lub teeb dawb thiab lub teeb dub yog dab tsi?
Qhov txawv ntawm lub teeb dawb thiab lub teeb dub yog dab tsi?

Video: Qhov txawv ntawm lub teeb dawb thiab lub teeb dub yog dab tsi?

Video: Qhov txawv ntawm lub teeb dawb thiab lub teeb dub yog dab tsi?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Dub tsuas yog qhov tsis muaj ntawm lub teeb , los yog vim nws tsis nyob los yog vim nws tau absorbed thiab notreflected. Lub npe ' teeb dub ' tsuas yog ultra-violet teeb , uas yog dog dig teeb (electromagneticradiation) uas siab tshaj qhov pom spectrum. Dab tsi teeb yog hu ua lub teeb dawb ?

Kuj nug, puas dawb ci nyob rau hauv lub teeb dub?

phosphor yog ib yam khoom uas emits pom teeb teb rau qee yam hluav taws xob. Dawb T-shirts thiab thom khwm ib txwm ci qab a lub teeb dub vim niaj hnub detergents muaj phosphors uas hloov UV teeb rau hauv lub teeb dawb . Qhov no ua rau cov dawb zoo li "whitethan dawb " nyob rau hauv ib txwm tshav ntuj.

Kuj Paub, lub teeb zoo li cas yog lub teeb dub? Lub teeb dub yog cov teeb uas emit ntev-waveultraviolet teeb , thiab yog li, tsis pom ntau teeb.

Ib yam li ib tug yuav nug, puas yog UV teeb thiab lub teeb dub tib yam?

A teeb dub (los yog feem ntau lub teeb dub ), kuj raug xa mus rau raws li a UV -A teeb , Ntoo lub teeb, los yog ultraviolet lub teeb , yog lub teeb uas emits ntev-yoj ( UV -A) ultraviolet lub teeb thiab pom tsawg heev teeb . Qhov no stands rau " teeb dub xiav".

Vim li cas lub teeb dub ua kom dawb ci?

Sub ib UV teeb , dawb khaub ncaws, peb UVposter [link], ci ntsa iab Nyob rau hauv qhov tsaus ntuj nti thiab ntau yam fluorescentcolored emit ib tug kaj ci ntsa iab . Ib qho phosphor yog ib yam khoom uas absorbs lub zog thiab rov emits nws li pom teeb . Hauv qab a lub teeb dub , phosphor hloov cov UVradiation lawv tau txais mus rau hauv pom teeb.

Pom zoo: