{"id":541,"date":"2023-06-20T09:07:38","date_gmt":"2023-06-20T09:07:38","guid":{"rendered":"http:\/\/inirat.com\/?p=541"},"modified":"2023-09-07T14:00:12","modified_gmt":"2023-09-07T14:00:12","slug":"what-is-natural-radioactivity","status":"publish","type":"post","link":"https:\/\/inirat.com\/en\/2023\/06\/20\/what-is-natural-radioactivity\/","title":{"rendered":"What is natural radioactivity?"},"content":{"rendered":"

PH\u00d3NG X\u1ea0 T\u1ef0 NHI\u00caN L\u00c0 G\u00cc?<\/h3>\n

C\u00f3 m\u1ed9t quan ni\u1ec7m sai l\u1ea7m ph\u1ed5 bi\u1ebfn: c\u00e1c ngu\u1ed3n ph\u00f3ng x\u1ea1 nh\u00e2n t\u1ea1o nguy hi\u1ec3m h\u01a1n ph\u00f3ng x\u1ea1 t\u1ef1 nhi\u00ean. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y kh\u00f4ng \u0111\u00fang.<\/p>\n

Ph\u00f3ng x\u1ea1 l\u00e0 n\u0103ng l\u01b0\u1ee3ng truy\u1ec1n t\u1eeb \u0111i\u1ec3m n\u00e0y \u0111\u1ebfn \u0111i\u1ec3m kh\u00e1c, d\u01b0\u1edbi d\u1ea1ng s\u00f3ng ho\u1eb7c h\u1ea1t. Ch\u00fang ta ti\u1ebfp x\u00fac v\u1edbi ph\u00f3ng x\u1ea1 t\u1eeb c\u00e1c ngu\u1ed3n t\u1ef1 nhi\u00ean v\u00e0 nh\u00e2n t\u1ea1o kh\u00e1c nhau h\u1eb1ng ng\u00e0y.<\/p>\n

\"\"<\/p>\n

Ph\u00f3ng x\u1ea1 v\u0169 tr\u1ee5 c\u00f3 t\u1eeb M\u1eb7t tr\u1eddi v\u00e0 kh\u00f4ng gian b\u00ean ngo\u00e0i, ph\u00f3ng x\u1ea1 t\u1eeb \u0111\u00e1 v\u00e0 \u0111\u1ea5t, c\u0169ng nh\u01b0 ph\u00f3ng x\u1ea1 trong kh\u00f4ng kh\u00ed v\u00e0 trong th\u1ee9c \u0103n v\u00e0 n\u01b0\u1edbc u\u1ed1ng c\u1ee7a ch\u00fang ta. T\u1ea5t c\u1ea3 \u0111\u1ec1u l\u00e0 ngu\u1ed3n ph\u00f3ng x\u1ea1 t\u1ef1 nhi\u00ean.<\/p>\n

Chu\u1ed1i l\u00e0 m\u1ed9t v\u00ed d\u1ee5 ph\u1ed5 bi\u1ebfn v\u1ec1 ngu\u1ed3n ph\u00f3ng x\u1ea1 t\u1ef1 nhi\u00ean.\u00a0Tuy nhi\u00ean, b\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i ng\u1eebng \u0103n chu\u1ed1i, b\u1edfi lo\u1ea1i tr\u00e1i c\u00e2y n\u00e0y l\u01b0\u1ee3ng ph\u00f3ng x\u1ea1 c\u1ef1c k\u1ef3 nh\u1ecf, v\u00e0 \u00edt h\u01a1n nhi\u1ec1u so v\u1edbi ph\u00f3ng x\u1ea1 n\u1ec1n t\u1ef1 nhi\u00ean m\u00e0 ch\u00fang ta ti\u1ebfp x\u00fac h\u1eb1ng ng\u00e0y.<\/p>\n

C\u00e1c ngu\u1ed3n ph\u00f3ng x\u1ea1 nh\u00e2n t\u1ea1o bao g\u1ed3m c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tr\u1ecb y t\u1ebf nh\u01b0 ch\u1ee5p X-quang, \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng v\u00e0 \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n.<\/p>\n

C\u00f3 m\u1ed9t quan ni\u1ec7m sai l\u1ea7m ph\u1ed5 bi\u1ebfn: c\u00e1c ngu\u1ed3n ph\u00f3ng x\u1ea1 nh\u00e2n t\u1ea1o nguy hi\u1ec3m h\u01a1n ph\u00f3ng x\u1ea1 t\u1ef1 nhi\u00ean. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y kh\u00f4ng \u0111\u00fang.<\/p>\n

Kh\u00f4ng c\u00f3 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd n\u00e0o l\u00e0m cho ph\u00f3ng x\u1ea1 nh\u00e2n t\u1ea1o kh\u00e1c ho\u1eb7c g\u00e2y h\u1ea1i h\u01a1n ph\u00f3ng x\u1ea1 t\u1ef1 nhi\u00ean. C\u00e1c t\u00e1c \u0111\u1ed9ng c\u00f3 h\u1ea1i li\u00ean quan \u0111\u1ebfn li\u1ec1u l\u01b0\u1ee3ng, ch\u1ee9 kh\u00f4ng li\u00ean quan \u0111\u1ebfn vi\u1ec7c ti\u1ebfp x\u00fac \u0111\u1ebfn t\u1eeb \u0111\u00e2u.<\/p>\n

T\u00f9y thu\u1ed9c v\u00e0o m\u1ee9c n\u0103ng l\u01b0\u1ee3ng, ph\u00f3ng x\u1ea1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh hai lo\u1ea1i.<\/p>\n

Ph\u00f3ng x\u1ea1 ion h\u00f3a c\u00f3 \u0111\u1ee7 n\u0103ng l\u01b0\u1ee3ng \u0111\u1ec3 lo\u1ea1i b\u1ecf m\u1ed9t \u0111i\u1ec7n t\u1eed kh\u1ecfi nguy\u00ean t\u1eed, c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u. V\u00ed d\u1ee5 v\u1ec1 ph\u00f3ng x\u1ea1 ion h\u00f3a bao g\u1ed3m tia X v\u00e0 radon (m\u1ed9t lo\u1ea1i kh\u00ed ph\u00f3ng x\u1ea1 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong \u0111\u00e1 v\u00e0 \u0111\u1ea5t).<\/p>\n

Ph\u00f3ng x\u1ea1 kh\u00f4ng ion h\u00f3a c\u00f3 \u00edt n\u0103ng l\u01b0\u1ee3ng h\u01a1n nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 k\u00edch th\u00edch c\u00e1c ph\u00e2n t\u1eed v\u00e0 nguy\u00ean t\u1eed, khi\u1ebfn ch\u00fang dao \u0111\u1ed9ng nhanh h\u01a1n. C\u00e1c ngu\u1ed3n ph\u00f3ng x\u1ea1 kh\u00f4ng ion h\u00f3a ph\u1ed5 bi\u1ebfn bao g\u1ed3m \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n v\u00e0 tia c\u1ef1c t\u00edm (UV) t\u1eeb M\u1eb7t tr\u1eddi.<\/p>\n

Ph\u00f3ng x\u1ea1 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng nguy hi\u1ec3m – n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i, \u0111\u1ed9 m\u1ea1nh v\u00e0 th\u1eddi gian con ng\u01b0\u1eddi ti\u1ebfp x\u00fac v\u1edbi n\u00f3.<\/p>\n

Theo nguy\u00ean t\u1eafc chung, m\u1ee9c n\u0103ng l\u01b0\u1ee3ng c\u1ee7a ph\u00f3ng x\u1ea1 c\u00e0ng cao th\u00ec c\u00e0ng c\u00f3 nhi\u1ec1u kh\u1ea3 n\u0103ng g\u00e2y h\u1ea1i. V\u00ed d\u1ee5, ti\u1ebfp x\u00fac qu\u00e1 m\u1ee9c v\u1edbi ph\u00f3ng x\u1ea1 ion h\u00f3a nh\u01b0 kh\u00ed radon s\u1ea3n sinh t\u1ef1 nhi\u00ean, c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u00e1c m\u00f4 v\u00e0 ADN c\u1ee7a con ng\u01b0\u1eddi.<\/p>\n

Ph\u00f3ng x\u1ea1 trong y h\u1ecdc hi\u1ec7n \u0111\u1ea1i bao g\u1ed3m h\u00ecnh \u1ea3nh y t\u1ebf s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt ph\u00f3ng x\u1ea1 ion h\u00f3a – nh\u01b0 ch\u1ee5p X-quang v\u00e0 ch\u1ee5p CT, c\u0169ng nh\u01b0 c\u00e1c k\u1ef9 thu\u1eadt b\u1ee9c x\u1ea1 kh\u00f4ng ion h\u00f3a – nh\u01b0 si\u00eau \u00e2m v\u00e0 ch\u1ee5p c\u1ed9ng h\u01b0\u1edfng t\u1eeb (MRI). N\u1ebfu s\u1eed d\u1ee5ng \u0111\u00fang li\u1ec1u l\u01b0\u1ee3ng s\u1ebd kh\u00f4ng nguy hi\u1ec3m.<\/p>\n

Ph\u00f3ng x\u1ea1 c\u0169ng c\u00f3 th\u1ec3 gi\u00fap \u0111i\u1ec1u tr\u1ecb m\u1ed9t s\u1ed1 t\u00ecnh tr\u1ea1ng b\u1ec7nh nh\u1ea5t \u0111\u1ecbnh: n\u00f3 c\u00f3 th\u1ec3 ti\u00eau di\u1ec7t m\u00f4 ung th\u01b0, thu nh\u1ecf kh\u1ed1i u ho\u1eb7c th\u1eadm ch\u00ed \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3m \u0111au.<\/p>\n

V\u1eady, c\u01a1 th\u1ec3 ch\u00fang ta c\u00f3 ph\u00f3ng x\u1ea1 kh\u00f4ng? C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 c\u00f3, gi\u1ed1ng nh\u01b0 m\u1ecdi th\u1ee9 xung quanh, ch\u00fang ta c\u0169ng c\u00f3 m\u1ed9t ch\u00fat ph\u00f3ng x\u1ea1. Nh\u01b0ng c\u01a1 th\u1ec3 con ng\u01b0\u1eddi c\u00f3 th\u1ec3 x\u1eed l\u00fd m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf b\u1ee9c x\u1ea1 v\u00e0 kh\u00f4ng g\u00e2y nguy hi\u1ec3m.<\/p>\n<\/div><\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":542,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-541","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/posts\/541","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/comments?post=541"}],"version-history":[{"count":1,"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/posts\/541\/revisions"}],"predecessor-version":[{"id":874,"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/posts\/541\/revisions\/874"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/media\/542"}],"wp:attachment":[{"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/media?parent=541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/categories?post=541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inirat.com\/en\/wp-json\/wp\/v2\/tags?post=541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}