{"id":26686,"date":"2025-07-14T08:50:11","date_gmt":"2025-07-14T01:50:11","guid":{"rendered":"https:\/\/i-clc.edu.vn\/?p=26686"},"modified":"2025-07-14T08:50:25","modified_gmt":"2025-07-14T01:50:25","slug":"khoa-hoc-song-ngu-tai-sao-bong-bong-xa-phong-co-hinh-tron","status":"publish","type":"post","link":"https:\/\/i-clc.edu.vn\/en\/kien-thuc-toan-khoa-hoc-song-ngu\/khoa-hoc-song-ngu-tai-sao-bong-bong-xa-phong-co-hinh-tron\/","title":{"rendered":"Khoa h\u1ecdc song ng\u1eef: T\u1ea1i sao bong b\u00f3ng x\u00e0 ph\u00f2ng c\u00f3 h\u00ecnh tr\u00f2n?"},"content":{"rendered":"

Tu\u1ed5i th\u01a1 c\u1ee7a c\u00e1c b\u00e9 h\u1eb3n \u0111\u00e3 r\u1ea5t quen thu\u1ed9c v\u1edbi b\u1ed9 m\u00f4n th\u1ed5i nh\u1eefng b\u1ecdt x\u00e0 ph\u00f2ng t\u1eeb nh\u1eefng chai nh\u1ef1a d\u00e1ng thon r\u1ed3i nh\u1ec9? Ch\u00fang bay l\u01b0\u1ee3n trong kh\u00f4ng kh\u00ed, l\u1ea5p l\u00e1nh nh\u01b0 c\u1ea7u v\u1ed3ng nh\u1ecf v\u00e0 h\u1ea7u nh\u01b0 lu\u00f4n c\u00f3 h\u00ecnh tr\u00f2n! Nh\u01b0ng t\u1ea1i sao l\u1ea1i l\u00e0 h\u00ecnh tr\u00f2n m\u00e0 kh\u00f4ng ph\u1ea3i h\u00ecnh vu\u00f4ng, h\u00ecnh tam gi\u00e1c hay h\u00ecnh tr\u00e1i tim? B\u00e9 h\u00e3y c\u00f9ng I-CLC t\u00ecm hi\u1ec3u v\u1ec1 \u201cb\u00ed m\u1eadt\u201d n\u00e0y nh\u00e9!<\/span><\/p>\n

You must have been familiar with blowing soap bubbles from slim plastic bottles since childhood, right? They float in the air, sparkling like little rainbows and almost always have a round shape! But why is it a circle and not a square, a triangle or a heart? Let’s find out this “secret” with I-CLC!<\/span><\/i><\/p>\n

Bong b\u00f3ng x\u00e0 ph\u00f2ng \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh nh\u01b0 th\u1ebf n\u00e0o?<\/b><\/p>\n

How Are Soap Bubbles Made?<\/i><\/b><\/p>\n

Bong b\u00f3ng x\u00e0 ph\u00f2ng \u0111\u01b0\u1ee3c t\u1ea1o n\u00ean t\u1eeb <\/span>m\u00e0ng n\u01b0\u1edbc m\u1ecfng tr\u1ed9n v\u1edbi x\u00e0 ph\u00f2ng<\/b>, bao quanh kh\u00f4ng kh\u00ed b\u00ean trong. Khi b\u00e9 th\u1ed5i qua v\u00f2ng tr\u00f2n nh\u1ecf, b\u00e9 \u0111ang \u201c\u0111\u01b0a\u201d kh\u00f4ng kh\u00ed v\u00e0o trong l\u1edbp m\u00e0ng \u0111\u00f3, v\u00e0 th\u1ebf l\u00e0 bong b\u00f3ng \u0111\u01b0\u1ee3c sinh ra! Nh\u01b0ng b\u00e9 h\u00e3y l\u01b0u \u00fd n\u1ebfu mu\u1ed1n th\u1ed5i nh\u1eefng bong b\u00f3ng v\u1edbi k\u00edch th\u01b0\u1edbc l\u1edbn nh\u00e9. B\u00ed quy\u1ebft n\u1eb1m \u1edf vi\u1ec7c ki\u00ean nh\u1eabn, n\u1ebfu b\u00e9 th\u1ed5i m\u1ed9t h\u01a1i th\u1eadt m\u1ea1nh \u0111\u1ec3 \u0111\u01b0a kh\u00f4ng kh\u00ed v\u00e0o b\u00ean trong, c\u00f3 th\u1ec3 nh\u1eefng nh\u1eefng bong b\u00f3ng \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh ng\u00e0y sau \u0111\u00f3 s\u1ebd b\u1ecb v\u1ee1 ra nhanh ch\u00f3ng ho\u1eb7c th\u1eadm ch\u00ed kh\u00f4ng c\u00f3. V\u1eady n\u00ean, n\u1ebfu b\u00e9 mu\u1ed1n th\u1ed5i nh\u1eefng bong b\u00f3ng t\u1eeb b\u1ecdt x\u00e0 ph\u00f2ng, h\u00e3y ki\u00ean nh\u1eabn v\u00e0 th\u1ed5i m\u1ed9t h\u01a1i ch\u1ea7m ch\u1eadm v\u00e0o b\u00ean\u00a0<\/span>trong, khi \u1ea5y m\u1ed9t chi\u00eac bong b\u00f3ng kh\u1ed5ng l\u1ed3 s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o n\u00ean.<\/span><\/p>\n

Soap bubbles are made from a thin film of water mixed with soap, surrounding air inside. When you blow through a small circle, you are \u201cpushing\u201d air into that film, and that\u2019s how bubbles are created! But be careful if you want to blow big bubbles. The trick is to be patient, if you blow too hard to push air inside, the bubbles that form later will probably pop quickly or not at all. So, if you want to blow bubbles from soap suds, be patient and blow slowly inside, then a giant bubble will be created.<\/span><\/i><\/p>\n

\"\"<\/a><\/p>\n

V\u00ec sao bong b\u00f3ng l\u1ea1i c\u00f3 h\u00ecnh tr\u00f2n?<\/b><\/p>\n

Why Are Bubbles Round?<\/i><\/b><\/p>\n

Bong b\u00f3ng lu\u00f4n c\u1ed1 g\u1eafng gi\u1eef <\/span>h\u00ecnh d\u1ea1ng ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng nh\u1ea5t<\/b>, v\u00e0 \u0111\u00f3 ch\u00ednh l\u00e0 h\u00ecnh c\u1ea7u! H\u00ecnh c\u1ea7u gi\u00fap l\u1ef1c c\u0103ng b\u1ec1 m\u1eb7t c\u1ee7a bong b\u00f3ng <\/span>ph\u00e2n b\u1ed1 \u0111\u1ec1u<\/b> xung quanh, l\u00e0m cho bong b\u00f3ng v\u1eefng ch\u1eafc v\u00e0 d\u1ec5 bay h\u01a1n.D\u00f9 b\u00e9 t\u1ea1o bong b\u00f3ng b\u1eb1ng khu\u00f4n vu\u00f4ng hay h\u00ecnh ng\u00f4i sao, khi bay l\u00ean, ch\u00fang v\u1eabn t\u1ef1 chuy\u1ec3n th\u00e0nh h\u00ecnh tr\u00f2n m\u00e0 th\u00f4i!<\/span><\/p>\n

Bubbles always try to take the shape that <\/span><\/i>uses the least energy<\/i><\/b>, and that shape is a sphere! A round shape helps the bubble\u2019s surface tension <\/span><\/i>spread out evenly<\/i><\/b>, making the bubble stable and able to float better.Even if you use a square or star-shaped wand, the bubbles still turn round when they float!<\/span><\/i><\/p>\n

M\u00e0u s\u1eafc l\u1ea5p l\u00e1nh c\u1ee7a bong b\u00f3ng \u0111\u1ebfn t\u1eeb \u0111\u00e2u?<\/b><\/p>\n

Where Do the Shiny Colors Come From?<\/i><\/b><\/p>\n

B\u00e9 c\u00f3 \u0111\u1ec3 \u00fd th\u1ea5y bong b\u00f3ng x\u00e0 ph\u00f2ng kh\u00f4ng ch\u1ec9 c\u00f3 h\u00ecnh tr\u00f2n m\u00e0 c\u00f2n l\u1ea5p l\u00e1nh nh\u01b0 c\u1ea7u v\u1ed3ng kh\u00f4ng? Nh\u1eefng m\u00e0u s\u1eafc lung linh \u0111\u00f3 <\/span>kh\u00f4ng ph\u1ea3i \u0111\u1ebfn t\u1eeb x\u00e0 ph\u00f2ng<\/b>, m\u00e0 l\u00e0 t\u1eeb <\/span>\u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi chi\u1ebfu v\u00e0o bong b\u00f3ng<\/b> \u0111\u1ea5y! Khi \u00e1nh s\u00e1ng chi\u1ebfu l\u00ean l\u1edbp m\u00e0ng bong b\u00f3ng r\u1ea5t m\u1ecfng, \u00e1nh s\u00e1ng b\u1ecb <\/span>ph\u1ea3n chi\u1ebfu (b\u1eadt l\u1ea1i)<\/b> v\u00e0 <\/span>kh\u00fac x\u1ea1 (b\u1ebb cong)<\/b>. L\u1edbp m\u00e0ng bong b\u00f3ng c\u00f3 ch\u1ed7 d\u00e0y, ch\u1ed7 m\u1ecfng, \u0111i\u1ec1u n\u00e0y l\u00e0m cho \u00e1nh s\u00e1ng b\u1ecb <\/span>ph\u00e2n t\u00e1ch th\u00e0nh nhi\u1ec1u m\u00e0u kh\u00e1c nhau<\/b>, gi\u1ed1ng nh\u01b0 c\u00e1ch c\u1ea7u v\u1ed3ng xu\u1ea5t hi\u1ec7n sau c\u01a1n m\u01b0a. M\u1ed7i m\u00e0u (\u0111\u1ecf, cam, v\u00e0ng, l\u1ee5c, lam, ch\u00e0m, t\u00edm) \u0111\u1ec1u <\/span>di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau<\/b>, n\u00ean khi \u00e1nh s\u00e1ng va v\u00e0o bong b\u00f3ng, ch\u00fang \u201cnh\u1ea3y m\u00faa\u201d v\u00e0 t\u1ea1o ra c\u00e1c d\u1ea3i m\u00e0u r\u1ef1c r\u1ee1. V\u00ec bong b\u00f3ng li\u00ean t\u1ee5c bay v\u00e0 thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng, c\u00e1c m\u00e0u s\u1eafc c\u0169ng thay \u0111\u1ed5i li\u00ean t\u1ee5c, \u0111\u00f3 l\u00e0 l\u00fd do b\u00e9 th\u1ea5y bong b\u00f3ng <\/span>\u0111\u1ed5i m\u00e0u l\u1ea5p l\u00e1nh<\/b> nh\u01b0 ph\u00e9p thu\u1eadt!<\/span><\/p>\n

Have you noticed that soap bubbles aren\u2019t just round, but also sparkle like little rainbows? Those shiny colors <\/span><\/i>don\u2019t come from the soap<\/i><\/b>, and they come from <\/span><\/i>sunlight shining on the bubble<\/i><\/b>! When sunlight hits the bubble\u2019s thin surface, the light gets <\/span><\/i>reflected (bounces back)<\/i><\/b> and <\/span><\/i>refracted (bent)<\/i><\/b>. Because the bubble\u2019s skin has spots that are thicker or thinner, the light <\/span><\/i>separates into different colors<\/i><\/b>, just like how a rainbow forms after rain. Each color (red, orange, yellow, green, blue, indigo, violet) travels at a slightly different speed, so when the light hits the bubble, the colors \u201cdance\u201d and create those beautiful, shimmering bands. Since bubbles are always floating and changing shape, the colors keep shifting too, and that\u2019s why they look like <\/span><\/i>colorful magic in the air<\/i><\/b>!<\/span><\/i><\/p>\n

\"\"<\/a><\/p>\n

Bong b\u00f3ng x\u00e0 ph\u00f2ng kh\u00f4ng ch\u1ec9 \u0111\u1eb9p m\u00e0 c\u00f2n r\u1ea5t th\u00f4ng minh! Ch\u00fang ch\u1ecdn h\u00ecnh tr\u00f2n v\u00ec \u0111\u00f3 l\u00e0 c\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 t\u1ed3n t\u1ea1i trong kh\u00f4ng kh\u00ed. L\u1ea7n t\u1edbi khi b\u00e9 ch\u01a1i bong b\u00f3ng, h\u00e3y th\u1eed quan s\u00e1t k\u1ef9 h\u01a1n, khoa h\u1ecdc \u0111ang bay l\u01a1 l\u1eedng ngay tr\u01b0\u1edbc m\u1eaft b\u00e9 \u0111\u00f3!<\/span><\/p>\n

Soap bubbles aren\u2019t just pretty, they\u2019re smart too! They choose to be round because it\u2019s the best way to float in the air. Next time you play with bubbles, take a closer look, science is floating right in front of your eyes!<\/span><\/i><\/p>\n

S\u01b0u t\u1ea7m<\/span><\/p>\n

Collected<\/span><\/i><\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Tu\u1ed5i th\u01a1 c\u1ee7a c\u00e1c b\u00e9 h\u1eb3n \u0111\u00e3 r\u1ea5t quen thu\u1ed9c v\u1edbi b\u1ed9 m\u00f4n th\u1ed5i nh\u1eefng b\u1ecdt x\u00e0 ph\u00f2ng t\u1eeb nh\u1eefng chai nh\u1ef1a d\u00e1ng thon r\u1ed3i nh\u1ec9? Ch\u00fang bay l\u01b0\u1ee3n trong kh\u00f4ng kh\u00ed, l\u1ea5p l\u00e1nh nh\u01b0 c\u1ea7u v\u1ed3ng nh\u1ecf v\u00e0 h\u1ea7u nh\u01b0 lu\u00f4n c\u00f3 h\u00ecnh tr\u00f2n! Nh\u01b0ng t\u1ea1i sao l\u1ea1i l\u00e0 h\u00ecnh tr\u00f2n m\u00e0 kh\u00f4ng ph\u1ea3i …<\/p>\n

Khoa h\u1ecdc song ng\u1eef: T\u1ea1i sao bong b\u00f3ng x\u00e0 ph\u00f2ng c\u00f3 h\u00ecnh tr\u00f2n?<\/span> Read More »<\/a><\/p>","protected":false},"author":427,"featured_media":26688,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[188],"tags":[],"class_list":["post-26686","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc-toan-khoa-hoc-song-ngu"],"acf":[],"_links":{"self":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts\/26686","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/comments?post=26686"}],"version-history":[{"count":2,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts\/26686\/revisions"}],"predecessor-version":[{"id":26691,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts\/26686\/revisions\/26691"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/media\/26688"}],"wp:attachment":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/media?parent=26686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/categories?post=26686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/tags?post=26686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}