Dab tsi yog Radiofrequency?

Radiofrequency yog ib hom ntawm lub zog, uas yog ntsuas nyob rau hauv "frequency," los yog wavelengths ib ob. Txhua yam ntawm lub zog, los ntawm lub suab nthwv dej koj iPod emits, mus rau hnub ci, mus rau lub tshav kub los ntawm koj lub cev, mus rau cov hluav taws xob gamma rays, raug cais raws li lawv zaus ntawm "electromagnetic spectrum."

Radiofrequency (RF) yog ib pawg ntawm cov spectrum no, thiab suav nrog ntau hom hluav taws xob uas peb siv txhua hnub: WiFi teeb liab, xov tooj cua thiab TV nthwv dej, thiab microwave ncu. Lub zog RF siv rau hauv daim tawv nqaij nruj yog nyob rau hauv lub ballpark ntawm 450 kilohertz, uas yog nyob rau hauv qeeb kawg ntawm lub radiofrequency ntau. Txhawm rau muab tso rau hauv qhov kev xav ntau dua, lub wavelength siv nyob rau hauv RF zawm ntawm daim tawv nqaij yog li 100 lab lub sij hawm qeeb dua li pom lub teeb, thiab ntau dua 1 billion zaus qeeb dua li X-ray. Physics zaj lus qhia ib sab, RF lub zog yog qhov ntsiag to thaum ib tus xav txog

Radiofrequency zawm tawv nqaij li cas?

Zoo li txhua hom ntawm lub zog, RF muaj lub peev xwm los tsim cov cua sov - thiab thaum txhua daim ntawv thov lub npe siv cov cuab yeej sib txawv me ntsis, txhua yam ua haujlwm los ntawm cua sov ntawm daim tawv nqaij cov khaubncaws sab nraud povtseg kom induce tshiab collagen thiab elastin ntau lawm thiab txhawb lub cell turnover, pab daim tawv nqaij ua. firmer, thicker thiab ntau hluas-saib.

Qhov kom zoo dua ntawm kev siv RF los ua kom sov cov ntaub so ntswg, tsis zoo li lasers (uas siv ntau dua-frequency light waves), yog tias qhov tsawg zaus ntawm RF tuaj yeem nyab xeeb nkag mus rau qib siab dua, pab txhim kho cov tawv nqaij thiab cov qauv, txawm tias nqa cov ntaub so ntswg. Lasers rau feem ntau ua hauj lwm los txhim kho daim tawv nqaij nto. Tsis tas li ntawd, RF tuaj yeem kho cov neeg mob ntau dua nrog cov tawv nqaij sib txawv yam tsis muaj kev pheej hmoo rau kev hloov xim mus tas li.